TORQUE VALUE GUIDE

TM 9-2815 -221

TORQUE VALUE GUIDE

Follow torque values given throughout this manual and in Torque

Reduce torque by 10 percent when engine oil is used as a lubricant.

Specifications Table (p D-l). When no value is given, use torque values

listed below.

Reduce torque by 20 percent when new screws are used.

The guide is based on using clean, dry threads.

Reduce torque by 30 percent when threading screws into aluminum,

unless inserts are

TORQUE VALUE GUIDE .

[POUND-FEET)

TORQUE LBS-FT

TORQUE

SCREW

3 DASHES

6 DASHES

SOCKET

NO DASHES

DIAMETER

(SAE GRADE 5)

(SAE GRADE 8)

SIZE

(SAE GRADE 2)

1/4 -20 UNC

10-

7/16

1/4 -28 UNF

7/16

5/16

13-

1/2

5/16

14-

23-

1/2

3/8 -16

14-

26-

39-

9/16

3/8 -24 UNF

15-

30-

46- 51

9/16

7/16

23-

44-

65-

5/8

7/16 -20 UNF

23-

44-

69-

5/8

-13 UNC

32-

65-

9 5 . 105

3/4

1/2 -20 UNF

73-

113- 123

3/4

9/16-

46- 56

100-

110

145- 155

9/16-

47- 57

107-

117

165- 175

13/16

5/8 -11 UNC

62- 72

140-

150

200- 210

15/16

5/8 -18 UNF

67- 77

153-

235- 245

15/16

3/4 -10 UNC

106-116

200- 270

365- 375

1-1/4

3/4 -16 UNF

115-125

268- 278

417- 427

1-1/4

7/8 - 9 UNC

165-175

385- 395

595- 605

1-5/16

7/8 -14 UNF

178-188

424- 434

663- 673

580- 590

251.261

900- 910

255-265

585- 634

943- 993

1-1/4-

541-461

1070-1120

1767-1817

1 -7/8

488-498

1211-1261

1963-2013

1-7/8

1-1/2.

727-737

1899-1949

3111-3161

2-1/4

816-826

2144-2194

3506-3556

2-1/4

1284