Bolt Torque Specifications - J&M SpeedTender LC290 Operator's Manual

Table of Contents

Always tighten hardware to these values unless a different torque or tightening procedure is listed for specific application. Fasteners must

always be replaced with the same grade as specified in the manual parts list. Always use the proper tool for tightening hardware. Make

sure fastener threads are clean and you start thread engagement properly. Use these values when tightening all bolts and nuts with

the exception of wheel nuts.

Diameter and Pitch (Inches) Dry

1/4"-20

5/16"-18

3/8"-16

7/16"-14

1/2"-13

9/16"-12

5/8"-11

3/4"-10

7/8"-9

1"-8

Diameter and Pitch (Inches) Clamp Load (Lbs.) Tightening Torque Clamp Load (Lbs.) Tightening Torque

1/4"-28

5/16"-24

3/8"-24

7/16"-20

1/2"-20

9/16"-18

5/8"-18

3/4"-16

7/8"-14

Always tighten hardware to these values unless a different torque or tightening procedure is listed for specific application. Fasteners must

always be replaced with the same grade as specified in the manual parts list. Always use the proper tool for tightening hardware. Make

sure fastener threads are clean and you start thread engagement properly. Use these values when tightening all studs and wheel

nuts.

TIGHTENING WHEEL NUTS: Torque 9/16"-18 lug nuts on wheels to 170 ft-lbs after the first 10, 25, and 50 miles of driving, then recheck

torque every 50 hours or every year, whichever comes first. Failure to do so may damage wheel nut seats. Once seats are damaged it

will become impossible to keep nuts tight.