Bradco 509 Manual del operador descargar pdf (Pagina 41)

BOLT TORQUE SPECIFICATIONS

GENERAL TORQUE SPECIFICATION TABLES

Use the following charts when determining bolt torque specifications when special torques are not given.

Always use grade 5 or better when replacing bolts.

SAE BOLT TORQUE SPECIFICATIONS

NOTE: The following torque values are for use with extreme pressure lubricants, plating or hard washer

applications Increase torque 15% when using hardware that is unplated and either dry or lubricated with

engine oil.

SAE GRADE 5 TORQUE SAE GRADE 8 TORQUE

Bolt Size

Pounds Feet

Newton-Meters

Pounds Feet

Newton-Meters

Bolt head identification marks as per

grade. NOTE: Manufacturing Marks Will

Vary

Inches Millimeters UNC UNF UNC UNF UNC UNF UNC UNF

1/4 6.35 8 9 11 12 10 13 14 18

5/16 7.94 14 17 19 23 20 25 27 34

3/8 9.53 30 36 41 49 38 46 52 62

7/16 11.11 46 54 62 73 60 71 81 96

1/2 12.70 68 82 92 111 94 112 127 152

9/16 14.29 94 112 127 152 136 163 184 221

5/8 15.88 128 153 174 207 187 224 254 304

3/4 19.05 230 275 312 373 323 395 438 536

7/8 22.23 340 408 461 553 510 612 691 830

1 25.40 493 592 668 803 765 918 1037 1245

1-1/8 25.58 680 748 922 1014 1088 1224 1475 1660

1-1/4 31.75 952 1054 1291 1429 1547 1700 2097 2305

1-3/8 34.93 1241 1428 1683 1936 2023 2312 2743 3135

1-1/2 38.10 1649 1870 2236 2535 2686 3026 3642 4103

METRIC BOLT TORQUE SPECIFICATIONS

Bolt head identification marks as per grade.

NOTE: The following torque values are for use with metric

hardware that is unplated and either dry or lubricated with

engine oil. Reduce torque 15% when using hardware that has

extreme pressure lubricants, plating or hard washer

applications.

Size of Bolt Grade No. Pitch (mm) Pounds Feet Newton-Meters Pitch (mm) Pounds Feet Newton-Meters

5.6 3.6-5.8 4.9-7.9 - -

M6 8.8 1.0 5.8-.4 7.9-12.7 - - -

10.9 7.2-10 9.8-13.6 - -

5.6 7.2-14 9.8-19 12-17 16.3-23

M8 8.8 1.25 17-22 23-29.8 1.0 19-27 25.7-36.6

10.9 20-26 27.1-35.2 22-31 29.8-42

5.6 20-25 27.1-33.9 20-29 27.1-39.3

M10 8.8 1.5 34-40 46.1-54.2 1.25 35-47 47.4-63.7

10.9 38-46 51.5-62.3 40-52 54.2-70.5

5.6 28-34 37.9-46.1 31-41 42-55.6

M12 8.8 1.75 51-59 69.1-79.9 1.25 56-68 75.9-92.1

10.9 57-66 77.2-89.4 62-75 84-101.6

5.6 49-56 66.4-75.9 52-64 70.5-86.7

M14 8.8 2.0 81-93 109.8-126 1.5 90-106 122-143.6

10.9 96-109 130.1-147.7 107-124 145-168

5.6 67-77 90.8-104.3 69-83 93.5-112.5

M16 8.8 2.0 116-130 157.2-176.2 1.5 120-138 162.6-187

10.9 129-145 174.8-196.5 140-158 189.7-214.1

5.6 88-100 119.2-136 100-117 136-158.5

M18 8.8 2.0 150-168 203.3-227.6 1.5 177-199 239.8-269.6

10.9 175-194 237.1-262.9 202-231 273.7-313

5.6 108-130 146.3-176.2 132-150 178.9-203.3

M20 8.8 2.5 186-205 252-277.8 1.5 206-242 279.1-327.9

10.9 213-249 288.6-337.4 246-289 333.3-391.6

10360 3-20-08-3

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Bradco 509 Manual del operador Pagina 41

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