Radical Sportscars SR3 XX, Owner'S Manual, Page: 43 / 56

43 QD163-1
Advisory generalized bolt torques:
B olt s ize/Th r ea d p it ch Gr a d e 2 Gr a d e 5 Gr a d e 8
1/4-20 6 10 12
1/4-28 7 12 15
5/16-18 13 20 24
5/16-24 14 22 27
3/8-16 23 36 44
3/8-24 26 40 48
7/16-14 37 52 63
7/16-20 41 57 70
1/2-13 57 80 98
1/2-20 64 90 110
9/16-12 82 120 145
9/16-18 91 135 165
5/8-11 111 165 210
5/8-18 128 200 245
3/4-10 200 285 335
3/4-16 223 315 370
*All settings above are listed in Ft/Lb.
B olt s ize (m m ) L ow Gr a d e Gr a d e 8.8 Gr a d e 10.9 Gr a d e 12.9
6 3-5 7 10 12
8 8-12 17 24 29
10 15-22 33 47 57
12 39 59 83 100
14 60 101 131 158
16 60-94 146 202 247
18 60-130 201 283 340
20 166-188 285 401 482