SAE Bolt and Nut Torque Value Chart
Grade 5: UNC or UNF Thread
Grade 8: UNC or UNF Thread
*drilled and tapped
Size Hex nut, or bolt tapped into hex
nut, or d&t hole
Hex top deformed locknut Flange nut, locknut, or bolt tapped
into flange nut or d&t* hole
ft•lb N•m ft•lb N•m ft•lb N•m
1/4 12 16 8 11 20 27
5/16 25 34 15 20 45 60
3/8 40 54 25 34 75 100
7/16 65 90 40 55 125 170
1/2 100 135 60 80 190 260
9/16 150 200 90 125 270 370
5/8 200 270 120 165 370 500
3/4 350 475 210 285 650 880
7/8 560 760 340 460 1250 1425
1 840 1140 500 680 1580 2145
1-1/8 1030 1400 320 840 1950 3645
1-1/4 1460 1980 880 1195 2760 3475
Size Hex nut, or bolt tapped into hex
nut, or d&t hole
Hex top deformed locknut Flange nut, locknut, or bolt tapped
into flange nut or d&t* hole
ft•lb N•m ft•lb N•m ft•lb N•m
1/4 14 19 10 14 24 33
5/16 30 40 18 25 50 70
3/8 55 73 35 50 90 125
7/16 85 115 50 70 140 190
1/2 130 175 80 110 220 300
9/16 190 260 110 150 310 420
5/8 260 355 160 245 430 585
3/4 450 610 270 365 750 1015
7/8 730 990 440 600 1210 1640
1 1090 1480 650 880 1320 2465
1-1/8 1550 2100 930 1260 2580 3500
1-1/4 2180 2955 1310 1780 3640 4935
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