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7/120 (P425AWIR), 9/110 (XP375AWIR), 10/105 (HP375AWIR), 14/85 (VHP300AWIR),
7/170 (P600WIR), 10/125 (HP450WIR), 14/115 (VHP400WIR)
TABLE 1 INCH FASTENERS
NOMINAL DESIGN TORQUE
8AE J249
GRADE 5
(HEAD MARKING)
8AE J249
GRADE 8
(HEAD MARKING)
TYPICAL RECTANGULAR TORQUE
PATTERN
CAPSCREW
OR NUT
THREAD
SIZE AND
PITCH
TYPICAL SQUARE TORQUE
PATTERN
(Nm.) (FT–LBF) (Nm.) (FT–LBF)
1/4 – 20 11 8 16 12
5/16 – 18 24 17 33 25
3/8 – 16 42 31 59 44
7/16 – 14 67 49 95 70
1/2 – 13 102 75 144 106
9/16 – 12 148 109 208 154
5/8 – 11 203 150 287 212
TYPICAL CIRCULAR TORQUE
3/4 – 10 361 266 509 376
TYPICAL CIRCULAR TORQUE
PATTERN