John-deere stx38 User Manual download pdf (Page 16)

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3/20/97

INCH FASTENER TORQUE VALUES

SPECIFICATIONS AND INFORMATION

INCH FASTENER TORQUE VALUES

Grade 1 Grade 2

Grade 5, 5.1 or 5.2 Grade 8 or 8.2

Lubricated

Dry

Lubricated

Dry

Lubricated

Dry

Lubricated

Dry

SIZE N•m lb-ft N•m lb-ft N•m lb-ft N•m lb-ft N•m lb-ft N•m lb-ft N•m lb-ft N•m lb-ft

1/4

3.7 2.8 4.7 3.5 6 4.5 7.5 5.5 9.5 712913.5 10 17 12.5

5/16

7.7 5.5 10 7 12 9151120 15 25 18 28 21 35 26

3/8

14 10 17 13 22 16 27 20 35 26 44 33 50 36 63 46

7/16

22 16 28 20 35 26 44 32 55 41 70 52 80 58 100 75

1/2

33 25 42 31 53 39 67 50 85 63 110 80 120 90 150 115

9/16

48 36 60 45 75 56 95 70 125 90 155 115 175 130 225 160

5/8

67 50 85 62 105 78 135 100 170 125 215 160 215 160 300 225

3/4

120 87 150 110 190 140 240 175 300 225 375 280 425 310 550 400

7/8

190 140 240 175 190 140 240 175 490 360 625 450 700 500 875 650

290 210 360 270 290 210 360 270 725 540 925 675 1050 750 1300 975

1-1/8

470 300 510 375 470 300 510 375 900 675 1150 850 1450 1075 1850 1350

1-1/4

570 425 725 530 570 425 725 530 1300 950 1650 1200 2050 1500 2600 1950

1-3/8

750 550 950 700 750 550 950 700 1700 1250 2150 1550 2700 2000 3400 2550

1-1/2

1000 725 1250 925 990 725 1250 930 2250 1650 2850 2100 3600 2650 4550 3350

TS1162

1 or 2

5.1

5.2

8.2

No Marks

SAE

Grade

and Nut

Markings

SAE

Grade

and Head

Markings

DO NOT use these hand torque values if a different

torque value or tightening procedure is given for a

specific application. Torque values listed are for

general use only and include a ±10% variance factor.

Check tightness of fasteners periodically. DO NOT use

air powered wrenches.

Shear bolts are designed to fail under predetermined

loads. Always replace shear bolts with identical grade.

Fasteners should be replaced with the same grade.

Make sure fastener threads are clean and that you

properly start thread engagement. This will prevent

them from failing when tightening.

When bolt and nut combination fasteners are used,

torque values should be applied to the

NUT

instead of

the bolt head.

Tighten toothed or serrated-type lock nuts to the full

torque value.

“Lubricated” means coated with a lubricant such

as engine oil, or fasteners with phosphate and oil

coatings. “Dry” means plain or zinc plated (yellow

dichromate - Specification JDS117) without any

lubrication

“Grade 2” applies for hex cap screws (not hex

bolts) up to 152 mm (6-in.) long. “Grade 1”

applies for hex cap screws over 152 mm (6-in.)

long, and for all other types of bolts and screws

of any length.

Reference: JDS—G200.

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