Description:

Head Style: Countersunk; Material: 10.9 Alloy Steel; Package Content: 20 x Countersunk Bolts. Product Name: Countersunk Bolt; Thread Size: (d x L1) M4 x 37mm/0.16" x 1.5"(D*L); Weight: 66g. Drive Type: Hex Socket; Main Color: Black. Thread Pitch: 0.7mm; Total Length: ( L ) 40mm/ 1.6". Head Size: (D x t) 8 x 3mm/0.3" x 0.12"(D*T); Width Across Flat (S): 2.5mm/ 0.1".