Product Description Item No. φD L W L1 M Tighten the strength(N.m) SG7-8-C19- 19.5 20 1.2 9.4 M2.5 1 SG7-8-C26- 26 25.5 2.5 11.5 M3 1.5 SG7-8-C34- 34 32.3 3.3 14.5 M4 1.5 SG7-8-C39- 39 34.1 4.1 15 M4 2.5 SG7-8-C44- 44 34.5 4.5 15 M4 2.5 SG7-8-C50- 50 40.5 4.5 18 M5 7 SG7-8-C56-…