TM-9-2350-311-34-1

HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS: HOWITZER, MEDIUM, SELF-PROPELLED, 155MM

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

SEPTEMBER 1994

TM-9-2350-311-34-1 - Page 316 of 352

TM 9-2350-311-34-1

E-1 TORQUE LIMITS

Table E-1 lists wet torque limits. Wet torque limits are used on screws with high-pressure lubricants applied to threads.

E-2 HOW TO USE TORQUE TABLE

1

2

3

4

5

6

Measure diameter of screw you are installing.

Count number of threads per in. or use a pitch gage.

Under heading “SIZE", look down "DIA IN.” column until you find diameter of screw being installed (there will

usually be two lines beginning with same size).

Use “THREADS PER IN.” column under “SIZE” heading to find number of threads per in. that matches number

of threads counted in step 2.

To find grade of screw you are installing, “SAE CAP SCREW HEAD MARKING” row to match markings on

head to correct picture on torque table.

Look down column under picture found in step 5 until you find torque limit in Ib-ft or N•m for diameter and

threads per in. of screw you are installing.

NOTE

Manufacturer’s cap screw head marking may vary. These are all Society of

Automotive Engineers (SAE) grade 5 (3 line).

E-2