Bolt Grades Torque Specs cahart
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Lw w.loGcationEs/los-LangelEes-meStal#1 818-729-3333
wSw.lIocaEtions/Gsan-diegOo-metal#1 858-277-8200
ORinduAstriaNlmetaGlsupEply.coCm/lOocatiUons/iNrvineT-meYtal#1 949-250-3343 wIwNw.E/locaMtions/rPiversIideR-metEal#1 951-300-9900
wPww.indHustrialmetOalsuply.cEom/locNations/phIoeniXx-metal#1 602-454-1500
Tww.indUustrialmetCalsuply.Scom/locaOtions/tucsNon-metal#1 520-441-5900
wSw.induAstrialmeNtalsuply.coJm/locOations/saSn-joseE-metal#1 408-432-4890
METRIC THREAD SIZES
US and METRIC STEEL BOLT GRADES
Thread Size* M1.6 x 0.35 M2 x 0.4 M2.5 x 0.45 M3 x 0.5 M3.5 x 0.6 M4 x 0.7 M5 x 0.8 M6 x 1 M8 x 1.25 M8 x 1 M10 x 1.5 M10 x 1.25 M12 x 1.75 M12 x 1.25 M14 x 2 M14 x 1.5 M16 x 2 M16 x 1.5 M18 x 2.5 M18 x 1.5 M20 x 2.5 M20 x 1.5 M22 x 2.5 M22 x 1.5 M24 x 3 M24 x 2 M27 x 3 M27 x 2 M30 x 3.5 M30 x2
Tap Drill Size** 1.25mm or #55 1.60mm or #52 2.05mm or #46 2.50mm or #39 2.90mm or #32 3.30mm or #30 4.20mm or #19 5.00mm or #8 6.8mm or H 7.00mm or J 8.50mm or R 8.80mm or 11/32 10.20mm or 13/32 10.8mm or 27/64 12.00mm or 15/32 12.50mm or 1/2 14.00mm or 35/64 14.50mm or 37/64 15.50mm or 39/64 16.50mm or 21/32 17.50mm or 11/16 18.50mm or 47/64 19.50mm or 49/64 20.50mm or 13/16 21.00mm or 53/64 22.00mm or 7/8 24.00mm or 15/16 25.00mm or 1.0 26.50mm or 1 3/64 28mm or 1 7/64
*Coarse Series in Bold ** Represents 75% theoretical thread
US TAPERED PIPE THREADS
SAE ID Marks Material
SAE 2 No Marks Low Carbon
Tensile
74,000 psi
SAE 5 3 Lines Medium Carbon Tempered
120,000 psi
SAE 8
6 Lines
Medium Carbon Quenched & Tempered
150,000 psi
ALLEN
None
High Carbon Quenched & Tempered
160,000 psi
8.8
10.9
12.9
ID Marks Tensile
METRIC 8.8
116,000 psi
METRIC 10.9
151,000 psi
METRIC 12.9
177,000 psi
US BOLT TORQUE SPECIFICATIONS *** (lbs/ft)
Bolt 1/4"-20 1/4"-28 5/16" -18 5/16" -24 3/8"-16 3/8"-24 7/16"-14 7/16"-20 1/2"-13 1/2"-20 5/8"-11 5/8"-18 3/4"-10 3/4"-16 7/8"-9 7/8"-14 1"-8 1"-12
Grade 2 5 6 9 12 16 22 24 34 47 52 98
115 157 180 210 230 320 350
Grade 5 8 10 17 19 30 35 50 55 75 90
150 180 260 300 430 470 640 710
Grade 8 12 14 25 29 45 50 70 80 110 120 220 240 380 420 600 660 900 990
ALLEN 12.9 177,000 psi
SHCS 14 16 29 33 49 54 76 85 113 126 230 255 400 440 640 700 980
1060
Thread Size 1/16"-27 1/8"-27 1/4"-18 3/8"-18 1/2"-14 3/4"-14 1"-11 1/2 1 1/4"-11 1/2 1 1/2" -11 1/2
Tap Drill Size C Q
7/16" 9/16" 45/64" 29/32" 1 9/64" 1 31/64" 1 21/32"
METRIC BOLT TORQUE SPECIFICATIONS*** (lbs/ft)
Bolt M6 x 1.0 M8 x 1.25 M10 x 1.5 M12 x 1.75 M14 x 2 M16 x 2 M18 x 2.5 M20 x 2.5
Grade 8.8 7 17 34 59 94
146 210 292
Grade 10.9 11 26 51 88 139 210 285 401
*** Decrease Values 15-25% for lubricated or plated bolts
Grade 12.9 12 29 57 99 158 250 341 489
Allen 12 29 57 99 158 250 341 489
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