Craftsman 19HP BRIGGS & STRATTON WITH 42" MOWER 107.27768 Operator's Manual

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Contents

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Hardware identification& TorqueSpecificationsCommon Hardware TypesHex Head CapscrewC ((((((((((((((((((((){(((((((((((((((((( OCarriage Belt¢ (((((((((((((((((((()((((((((((((((({((((OWasherLockwasherHexNutStandard Hardware SizingWhen a washer or nut is identified as 112", this is theNominal size, meaning the inside diameteris 1/2 inch; if asecond number is present it represent the threads per inchWhen bolt or capscrew is identified as 112 - 16 x 2", thismeans the Nominal size, or body diameter is 1/2 inch; thesecond number represents the threads perinch (16 in thisexample, and the final number is the body length of thebolt or screw (in this example 2 inches long).The guides and ruler furnished below are designed tohelp you select the appropriate hardware and tools.m_mr-" Screw,--_ BodyDiameterm4_Nut, 1/2"InsideDiameter1/2x2 "Length}Wrench & Fastener Size Guide@114" Bolt or Nut 5/16" Bolt or NutWrench--7/16" Wrench--1/2"HardwareGradeTorque Specification ChartFOR STANDARD MACHINE HARDWARE (Tolerance _+20%)© © ©SAEGrade 2 SAEGrade5 SAEGrade8Size OfHardware8-328-3610-2410-321/4-201/4-285/16-185/16-243/8-163/8-247/16-147/16-201/2-131/2-209/16-129/16-185/8-115/8-183/4-103/4-167/8-97/8-141-81-12in/Ibsfifths Nm.19 2.120 2.327 3.131 3.5in/Ibsft/Ibs Nm.30 3.431 3.543 4.949 5.5in/Ibsft/Ibs Nm.41 4.643 4.960 6.868 7.766 7.6 876 8.6 1011 15.0 1712 16.3 1920 27.2 3023 31.3 3530 40.8 5035 47.6 5550 68.0 7555 74.8 9065 88.4 11075 102.0 12090 122.4 150100 136 180160 217.6 260180 244.8 300140 190.4 400155 210,8 440220 299.2 580240 326.4 64010.9 12 16.313.6 14 19.023.1 25 34.025.8 27 34.040.8 45 61.247.6 50 68.068.0 70 95.274.8 80 108.8102.0 110 149.6122.4 120 163.2149.6 150 204.0163.2 170 231.2204.0 220 299.2244.8 240 326.4353.6 386 525.0408.0 420 571.2544.0 600 816.0598.4 660 897.6788.8 900 1,244.0870.4 1,000 1,360.0NOTES1. These torque values are to be used for all hardwareexcluding: Iocknuts, self-tapping screws, thread formingscrews, sheet metal screws and socket head setscrews.2. Recommended seating torque values for Iocknuts:a. for prevailing torque Iocknuts - use 65% of grade 5torques.b. for flange whizlock nuts and screws - use 135% ofgrade 5 torques.3. Unless otherwise noted on assembly drawings, all torquevalues must meet this specification.318" Bolt or NutWrench--9/16"7/16" Bolt or NutWrench (Bolt)--5/8"Wrench (Nut)--11/16"112" Bolt or NutWrench--3/4"PTS - 31

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