Standard shaft keyways. 6 1. Standard shaft keyways

 
6 1Standard shaft keyways  Keyway toleranceKeyway-and-key-size-dimensions

1890 0. Datums are A and B in the centres at each end. I've selected a shear strength = S s = 200 MPa, and a compressive strength = S c = 130 MPa. For instance, if standard tolerancing on stainless keys is, say, 0. 3mm 5mm 5mm 5mm 5mm 6mm 6mm 6mm 8mm 8mm 22mm 24mm 16mm 17mm 19mm 20mm 25mm Keyway Width (w) 10mm 3mm 3mm 1. Gib Head Keys: This type of key is quite similar to the tapered key except for a head which is provided at the bigger end of the key in order to facilitate easy removal of the key. We can provide keyed shafts in any length up to 20 foot. These shafts have keyways only on the ends, leaving a plain shaft in the center. These values are to be reduced by 25% if the shafts have keyways. These keys are rectangular or square solid bars that fit into matching keyways machined into the shaft and the component bore. and robotics. Parallel keysKeyway shaft roymech tolerance Shaft standard key sizes rectangular gates keys diameters most non std readily availableParallel metric keys and keyway dimensions. 8mm 2. 487 Minimum 2. Total revolutions of shaft = 900x 10 6 revs. A further disadvantage to shaft keys in a world of increasingly compact motion components is the reduction in the torque density of the shaft and its respective locking element. Using shape optimization by providing chamfer and fillet at corners, it is shown that. Metric key keyway shaft standard keyways falk keys bores resources industrial Shaft key standard sizes rectangular gates keys diameters most non std readily available3 ways to convert within metric measurements Metric convert measurement measurements conversions easy way within units ways unit decimal number use. 015-0. 001 TIR, allow for the attachment of gears,. 9-11, and 9-12 Figure 9. They can be made using a standard stock material such as key stock or custom machined to suit the application. keyways in the shaft members than to keyways in coupling hub bores. 180. Lecture1: Design of Shaft 26. Total Height (X) = Depth (Y) = Return to broaching : 2388 State Route 726 Eaton, Ohio 45320 (937) 456-2232 Fax (937) 456-2282 [email protected] to 3. Using a hexagon socket wrench (DIN911) gradually tighten the grub cap screws in accordanceProduct Description. While a designer is free to specify any. It is a standard form of key and maybe either have a rectangular or square cross-section. Keyway is not made for holes of less than 12 mm. 1250 0. Double-check the key-way's width and depth as it pertains to your assembly, however. Shaft and hub keyway dimensionsKeyways shaft keyway coupling shafts drive apart rotate two installing should asked driver question common am if when What are shaft keyways. Only informative sections of standards are publicly available. Parallel keys. S. 5 SHAPE, DIMENSIONS AND TOLERANCES OF KEYWAYS 8 -4 X Sect ion X-X Detail A Vaiues in millimetres Shaft Keyl ) Keyway Diameter d Width b Depth*) Sect ion bXh Radius r Tolerante for class fit Free Normal Close Shaft tl Shaft Hub Hub and hub H9 DIO IV9 Js9 P9 nom. Keyway dimensioning. AUTOMATION & IIOT. MISUMI. Install them in keyways to transmit torque from shafts to gears and other components. Find the depths to cut in keyway and keyseat. Here we can calculate rigid connections, namely the pinned, keyed, splined and flanged ones. When a keyway is damaged, cut a new, wider one. 140 mm to 500 mm – 20 mm step. shaft diameter Dimension d Allowance (h9) Allowance dimension (D10) 2×2 2 0-0. 2. Keyshaft keyed shaft, diameter 1 7/16 in, keyway 3/8 in x 3/16 inKeyway parallel keyways metric t2 wxh bores Keyway keyed keyways boresGates belts, hoses, and applications: standard & non-standard shaft key. They are also often used on tapered shafts. Rectangular-faced keys are used for larger shaft diameters and square keys are used for shafts smaller than 6. 4. Key height: 25mm. As seen by the image, the top part of the key is also rounded. 1) Unless specified by the customer: 2) Actual shaft fit will vary depending on - Series S couplings supplied with actual shaft diameters. S. Woodruff Key Assortments. However, designers tend to forget that other important. Tony, a 1/4" keyway is standard on 1" diameters. 004, then the shaft keyway should be 0. The saddle keys are classified into two types, they are. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. 3) Keyway fillet radius to be specified by customer. Install them in keyways to transmit torque from shafts to gears and other components. Install them in keyways to transmit torque from shafts to gears and other components. The common specification dimension, Key Size, is highlighted. com. 3 mm, but the shaft had a keyway width value of 9. Many keyways are milled directly into a shaft or broached into the corresponding bored holes. 3mm 2. Keys shaft rectangular types key chart hub designs tapered machine selectionStandard keyway size chart Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k. This technique is used for parts like a gear, hub or pulley. Shaft Diameter. 88 Lecture1: Design of Shaft 33. Keyways play a crucial role in mechanical systems, enabling power transmission between shafts and other machine elements. Box 12086 Omaha, NE 68112-2086A Key is used on a shaft keyway to retain mechanical power transmission components such as gear drives and pulleys to transmit power. Metric Standard Parallel Keyway and Key Sizes Shaft Diameter (mm) Keyway (mm) Key (mm)* From To Width (W) Depth (h) Width (W) Depth (T) 6 8 2 1. This standard does not apply to: - couplings attached to shafts without keys, see ANSI/AGMA 9103-B08;A shaft key is a small metallic component mounted between the shaft and hub to restrict the relative motion. Page 1 of 3. 1The tables below show the dimensions of a straight sided spline in accordance with BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. . potrero, Regarding the alignment of the slots, there is a "simultaneous requirements" rule in GD&T. Undersized Machine Key Assortments. R R Cutter Run-out. Undersized Key Stock Assortments. 025 mm. of the key will come into uniform contact with the shaft and the hub. e. 062 0. These devices securely connect drive component hubs to shafts in demanding. Keyways are generally used in fastening gears to a shaft, and they should be secured by applying drilled holes for set screws, or applying flats to the shaft, in case of fastening only with set screws. W x T2 Keyway ISO Standard — mm Snart Dlameter WI dth Groove dimensions keys DIN 6E-ga Shut 1 (With • 1972. A key prevents a relative rotation between the two parts, and may enable torque transmission to occur. It helps to transmit torque. 003, -. B. 219 (c) (5) (ii) The vertical clearance in passageways between the floor and power transmission beams, ceiling, or any other objects, is not less than five feet six inches (5 ft. Select your units as required. Use the middle of the shaft with bearings and other round-bore components. Tube Cleaners. For use on standard hardened round shafts, Shaft Adapters are precision machined, non-marring, easy to adjust, with high clamping power. ASME Code for steel purchased under definite specificationsstandard keyway design in section 5. Standard Metric Keys Keyways for Metric Bores with One Key. Keyway Depth (Normally 1/2 of width) Total Height (X) = Depth (Y) = Metric Calculator Bore Size. Woodruff keys work well near shaft shoulders, where a standard open keyway would create too much stress. British Standard Metric Keyways for Square and Rectangular Parallel Keys 11 5/16 3/8 7/16 1/2 3/4 3/4 7/8 Nominal Diameter, d 6 1/2. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. The key should fit snuggly in the keyway with minimal side Standard keys should be the same length or slightly longer than the keyway in the hub. Shaft standard key sizes rectangular gates keys diameters most non std readily availableMetric key keyway shaft standard keyways falk keys bores resources industrial Shaft and hub keyway dimensionsKey allen hex wrench keys set bolts types alley supply competitive prices details alibaba fairwell. These easy-to-adjust components maintain perpendicularity to <0. Gib head keys. The first is Js9. TruKey® Shafting from Keystone is designed to provide the straightest, most accurate keyed shafting, in the industry. You can measure the taper bore of a propeller with digital vernier calipers. 020 0. The table above shows the dimension of the keyway / keyseat for each available hub bore diameter. 000 +. Parallel shaft keys are a type of machine element used to secure the relative rotational position of shafts and components such as gears, pulleys, or couplings that are mounted on them. New diameter sizes (13, 16, 17, 18 and 22) are added for h9 tolerance types. 050 mm to −0. Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings (Page 2 of 2) All Types 427-140 Reo a 21 (P eso) oola e el 11 pesees 2 Telepoe 22 a 22 eoo Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – Inches Shaft Diameter “D” Key Size Nominal Keyway Width Hub “W” Keyway Depth Hub “T2” Shaft Diameter vs Key Sizes Design Recommendations. Plastic Gears and GearRacks— 14 1/2° Pressure Angle. 5 in (170 mm). Standard keyway dimensionsKeyway chart Keyshaft keyed shaft, diameter 1 7/16 in, keyway 3/8 in x 3/16 inKeyway slot key shaft keyways. It may be mildly magnetic. Shallow keyway depths must exceed 2/3 of the full keyway depth of the square keys shown above. Shaft Diameter. The following table includes standard rectangular shaft key sizes for shaft diameters ranging from 5/16" to 9": Standard rectangular key stock is readily available from most Gates Industrial Distributors. Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. 000 mm to +0. The advantage of the Js9 tolerance is that the key can be Keys shaft rectangular types key chart hub designs tapered machine selection5/8" od keyed shafting with a 3/16" full keyway Metric key keyway dimensions per iso/rtt3 js9 widthMetric key keyway dimensions. 0mm metric, standardShaft standard key sizes rectangular gates keys diameters most non std readily available Chart keyway torqueKeyway metric key dimensions standard keyways keys bores shaft hub depth iso diameter engineering table edge width millimeters. Easily calculate the values required to cut keyseats and keyways. 1-1943 standard. 1045 Pre-Keyed Precision Ground Shafting, is a 1045 steel round that has been turned, ground and polished to a 32 RMS surface finish with a pre-machined full length keyway cut to ANSI standards. To ensure an adequate factor of safety in the design of a shaft with standard keyway (width, one-quarter, and depth, one-eighth of shaft diameter), the former Code for Transmission Shafting tentatively recommended that shafts with keyways be designed on the basis of a solid circular shaft using not more than 75 percent of the working stress. D. The strength in torsion, of shafts made of ductile materials are usually calculated on the basis of the maximum shear theory. It might be worth roughing the keyway underwidth by 1/16" and then profile cut both sides with a nice sharp carbide to straighten it up. This is measured at the wall height not the depth of the cut from first contact with the diameter. Metric standard parallel keyway and key sizes shaft diameter (mm) keyway (mm) key (mm)*. In stock and ready to ship. 000 so that there is no. Install them in keyways to transmit torque from shafts to gears and other components. The bending force produced by gears or chains is equal to the net driving force given by. 3. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. Also calculated are the overall measurements for shaft and bore, as well as the chord height. Unless otherwise specified, the shaft keyway is assumed to be standard. it is also important to go with a well-accepted industry bore standard so the. This type of key is used in areas where frequent removal of the key is necessary. 1BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways. 3) Keyway fillet radius to be specified by customer. No welding required. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. Parallel keysKeyway shaft roymech tolerance Shaft standard key sizes rectangular gates keys diameters most non std readily availableParallel metric keys and keyway dimensions. The bottom portion of the Woodruff key fits into the circular keyway in the shaft. 5. 3/64. Straight keys, with a square or rectangular cross section, are the most common type of key. That is, for a 1/2" key the depth of the keyway would be . 002 inch for keyseat length up to and including 4 inches; 0. Dimensions: Shaft Diameter (A): 2" Keyway Width (B): 1/2" Keyway Depth (C): 1/4" Shaft Material: 1018 Steel; Phone: (407) 347-3519 Email: [email protected] using a key it should firstly be fitted in the shaft Keyway. The end of a keyway has two standard designs, shown in Figure 1. The depth of the keyway weakens the shaft. 4. Use the keyways with machine keys to transmit torque to gears, sprockets, and other keyed components. These keys have a tapered body that wedges in to the keyway for a more secure fit than standard machine keys. Refer to Figures 4 and 5 and Tables 6 and 7 for recommended setscrew location and size. 000 / +0. Re-design the shaft shown below to be a uniform,Keyway chart Shaft standard key sizes rectangular gates keys diameters most. based on the table on webpage Factors. International Standard ISO 3117 was developed by Technical Committee ISO/TC 14, Shafts for machinery and accessories, and was circulated to the member. Choose from our selection of keyway shafts, including keyed rotary. The information contained with ANSI/AGMA 9002-A86 did not necessarily agree with some commonly used specifications. 1910. For more information, to get a formal quote on 2-15/16" keyed shaft, or for pricing on any of its accompanying components/ accessories please contact us and we will be happy to assist you. rush job because a. They’re also available in metric. 7/11Ansi B17 1 Standard Keyway Dimensions LowellcorpAs this ansi b17 1 standard keyway dimensions lowellcorp, it ends up living thing one of the favored ebook ansi b17 1 standard keyway dimensions lowellcorp collections that we have. The shaft is made from AISI 1020 cold-drawn steel. 2515 0. Ruland manufactures them from select North American bar stock in 2024 aluminum for lightweight and low inertia, 1215 lead-free steel for general purpose use, and 303 stainless steel for high corrosion resistance. 08-0. . sometimes referred to as a keyway. In the English system, it is standard practice to dimension keyways. 6. positioned on the shaft and the key slot and keyway are aligned, the taper key is inserted and pressed or hammered tightly into place. KEYSHAFT Keyed Shaft, Diameter 3/4 in, Keyway 3/16 in x 3/32 in. These keys have a tapered body that wedges in to the keyway for a more secure fit than standard machine keys. Choose from our selection of 1 7/16" shafts in a wide range of styles and sizes. JHG. 030: 0. BOTTOM OF SHAFT TO BOTTOM OF KEYWAY. Title: Tables. ANSI/AGMA 9002-A86 was based upon the design criteria related to bores and keyways in coupling hubs that had evolved over many years of successful industry. 6 - 8 - 10 - 12 - 14 - 16 - 18 - 20 - 22 - 25 - 28 - 32. These values are to be reduced by 25% for the presence of keyways. 250"+. The Position of the keyway in the shaft and its relation to the Position of the propeller boss shall be as shown in Fig. 1 +0. Gear Products and Suppliers | Gear Knowledge Menu. 90. Referencing Figure 1, the keyway dimension is W x T 1. 25. The gap of the keyway is shown with tolerances again and the semi-gap is shown. Woodruff keys work well near shaft shoulders and on tapered shafts. 110 mm to 140 mm – 15 mm step. Keys shaft rectangular types key chart hub designs tapered machine selectionStandard keyway size chart Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k. 010 / -. Tolerance each on T1 and T2 is -. 46 : Part 1 : 1958 DLMENSIONS OP TANGENTIAL KEYS AND KEYWAYS. Referencing Figure 1, the keyway dimension is W x T 1. This key stock is undersized, so keys will fit slightly more loosely than standard keys and are best for inconsistent keyways. Woodruff Keys. Keyway metric key iso dimensions standard keyways keys r773 pdf bores shaft hub depth diameter standards engineering table edge widthKeyway tolerances bore Keyway dimensions table aiiShaft standard key sizes rectangular gates keys diameters most non std readily available. This Standard covers requirements for square and rectangular parallel keys and keyways intended for both alignment of shafts and hubs, and transmitting torque between shafts and hubs. This type of shaft has a tighter tolerance, nicer finish, and has been polished. 020 0. Keyway (Shaft. Unless otherwise specified, the shaft keyway is assumed to be standard. It also gives the relation to be observed between the diameter of the shaft and the section of the key. We can provide keyed shafts in any length up to 20 foot. H-M Supporter Gold Member. any shaft from 1. 2515 0. 5 inches (38. In manufacturing upon 6885 Information used with permission ot Martin 02007 Shatt Keyseats/Hub Keyways Standard Keyseats/Keyways Sra' IoW Square Keyways Metric: WxHKey W x T2 Keyway American Standard — Inches ShanScenario: The exposed round shafts are completely smooth and have no bolts, holes, or keyways. d. The extra 4 inches × 3/8″ high key stock. 060 +0. They can be used in transmitting motion and power between two shaft in the same or in opposite directions. Keyway metric dimensions key iso tolerance js9 r773 width per depth hub t2 height radius text mill question answered hasnSolved 5. The Reverse, numbered, Primus, Everest, and Quad key. benmychree John York. A key is a piece of metal used to connect a rotating machine element to the shaft. 3. REFERENCE DEPTH. Recommendations for key size, length and keyway depth as a function of shaft diameter are provided in ASME Standards B17. Keyway shaft roymech. 2 Cross-section of prismatic part of parallel key-way, the coordinate system is placed at the shaft axis. Schlage Keyway Types. The Stafford Manufacturing Corp. 3mm 2. 18 1. Hub keyway b* P9 / N9 / H9 Shaft keyway h t 1 = d + t 2 t 2** t 3 = d – t 4 t 4 6 2 2 2 7 1 +0,1 4,8 1,2 +0,1 7 2 2 2 8 1 +0,1 5,8 1,2 +0,1. Combine gears with different numbers of teeth to change speed and torque in your assembly. Check Details. The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. 25. Keyseats and Keyways. Definition of shaft Standard shaft sizes Standard shaft materials Design of shaft based on strength 8. 1 8 3 +0. While popular on external shaft keyways, milling is much less popular for cutting the inside. • Machine elements such as gears, pulleys (sheaves), flywheels, clutches, and sprockets are mounted on the shaft and are used to transmit power from the driving. While ubiquitous and intuitively easy to understand, the key and keyway is a remarkably ineffective technology. The first is Js9. 95 3. As with all functions of the Machinist's Calculator, linear values can be. 250 +0. TruKey® Shafting from Keystone is designed to provide the straightest, most accurate keyed shafting, in the industry. For use on standard hardened round shafts, Shaft Adapters are precision machined, non-marring, easy to adjust, with high clamping power. Regular. This key stock is stepped to match repaired keyways in shafts or gears. 5020 2. 5000 2. Typical applications with these forces include indexing. Choose from our selection of shaft keys, including rounded machine keys, machine keys, and more. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. Shaft Keyway Shear and Yield Strength Formulae and Calculator. Use the keyways with machine keys to transmit torque to gears, sprockets, and other keyed components. BS ISO 4156:2005_1: Straight cylindrical involute splines. 4235 : PART 1 : 1972 Shaft key selection is crucial in avoiding premature failure on keyed joints. ISO/TC 14. Keyway metric key dimensions standard keyways keys bores shaft hub depth iso diameter engineering table edge width millimetersWoodruff ansi fasteners nominal Woodruff ansi metric keyway fasteners nominalParallel dimensions metric keyway key keys 1972. Top. This is an undersized clearance. The center of the keyway is typically located 1/3 of the. 2 MATHEMATICAL FORMULATION AND FE The torsional moment is given by M t~GJ w l ð1Þ Fig. 000 for all standard keyways BORE, KEYWAY & SET SCREW INFORMATION MECHANICAL P. Standard and metric keyway broachesTable aii-12. 5 inches (38. . The following table includes standard rectangular shaft key sizes for shaft diameters ranging from 5/16" to 9": Standard rectangular key stock is readily available from most Gates Industrial Distributors. Keyway Width. 1910. Keyway dimensionsKeyway sizing chart Metric stepper motor shafts size data tableMetric key keyway dimensions per iso/rtt3 js9 width. 1-1967, ASME standard B17. Shaft Keyseats/Hub Keyways Standard Keyseats/Keyways. 000. For a key to function properly, both the shaft and rotating elements (gear, pulley and coupling) must have a keyway and a keyseat. These keys have a tapered body that wedges in to the keyway for a more secure fit than standard machine keys. - If a part is 6 inches thick, the Wire-cut EDM machine will be able to cut two inches deep per hour. Stock lengths from 3 feet to 24 feet. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 Standard keyway sizes chartStandard keyway dimensions Metric key keyway dimensions per iso/r773. the depth of a keyway is an important taken every Shaft keyway depth calculatorKeyway misumi. 3) Keyway fillet radius to be specified by customer. This is an undersized clearance. They’re used in a wide range of industrial and consumer OEM and MRO applications, including: Power transmission. It cannot be used as a feather. 6 - M 18. A shaft narrower than the applicable shaft diameter should not be used. Shaft keyways and keys are used to transmit torque from shafts to mechanical transmission elements such as gears, and pulleys, using a keyed joint. BS 46 Part 1 : 1958 Square Keys and keyway Dimensions. The gib head makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. The centuries-old industry standard shaft-to-hub mounting technique is the key and keyway. Potential clearance will be between +0. The second is a P9 tolerance. (2000+HP) shafts had their keyways worn to the point the shaft needed to be turned from solid 4140 anew. Transmission shaft; Standard size of shaft – Step sizes. ANSI/AGMA 9002-A86 was based upon the design criteria related to bores and keyways in coupling hubs that had evolved over many years of successful industry practice. BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions Ref Standard . Standard Metric Keys Keyways for Metric Bores with One Key; Keyway Cutter Hole Keyway Dimensional Data for MIlling Centers and Arbors - ANSI/ASME B94. Machine keyway to recommended size and tolerance listed per Table 5. These frictionalAccording to OSHA Standard 1910. BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions All Dimensions in inches. 94 inch. KeyWay. Cutting an internal keyway can be a challenging task, but with the right method and tools, it can be done with precision and efficiency. 1) has a stress concentration factor of 3 [42]. G&G Manufacturing Company 4432 McKinley Street P. Note: The code "SR" on the included key. W width. keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keysSaddle keys are one of the shaft key kinds that are mounted on the shaft’s surface rather than in the keyway. COMPACT & POWERFULThese explain the sizes and dimensions required by different keyway families according to different manufacturers, and the charts are used in the making of keyways to ensure correct sizing. depth tol. 005, -. That is, for a 1/2" key the depth of the keyway would be . The key can be withdrawn at will to disengage the mating components. 001/-0. Unless otherwise specified, the shaft keyway is assumed to be standard. These keys have a tapered body that wedges in to the keyway for a more secure fit than standard machine keys. 020 0. Keyway Dimensions. corresponding keyways for Metric shafts are listed below in Table 2. These shafts have keyways only on the ends, leaving a plain shaft in the center. Read more on how keys and keyways work and what types are available – Keys and Keyways. 3/32. 5 Interference Fits Components can be attached to a shaft without a key or spline by using. The sizes and tolerances contained in this Standard are intended for single key applications only. Parallel keys are the most widely used machine key. The profile keyway is cut by an end-mill while the sled-runner keyway is cut by an ordinary milling cutter. Tube Cleaners. 010. 25 mm to 60 mm – 5 mm step. Author: Melyssa Kotecki Created Date: 4/29/2019 2:23:20 PM. The value of standard shaft diameter is 66 mm. Keyway Cutter Hole Keyway Dimensional Data for MIlling Centers and Arbors - ANSI/ASME B94. Keys and keyways BS 46 Part 1 : 1958 Keys and keyway Dimensions-Parallel Rectangular Adve Radius 0. * j6, k6, and m6 are used for new standard motor shafts. Keys are made of steel. Keys and keyways. 1. Quality drop forged yokes coupled with relubricable needle bearings. 020 0. We stock pre keyed shafting in many diameters, including metric diameters, with standard keyways. 18-8 stainless steel key stock offers a balance of strength and corrosion resistance. The flat key is the standard part, its two sides are the working surface, to transmit the torque. 56000 KN/m2 for the shafts with allowance provided for keyways. A standard broached key-way is used in the mounted component. 75 to the calculated design stress if the section being considered includes a keyway. A list of standard keyway and corresponding. 1/2 to 3/16. 53.