Description:

10. 9 Alloy Steel Material, 0. 7mm Thread Pitch, Hex Key Hex Socket Countersunk Flat Head Key Bolts Screws M4 x 20mm. Countersunk bolts is anti-corrosion,rustless,non-pollution and high-hardness. It is widely used in industrial. Model # a15100700ux0263 Features: Head Style: Countersunk; Material: 10. 9 Alloy Steel; Package Content: 50(+/-2%) x Countersunk Bolts Product Name: Countersunk Bolt; Thread Size: (d x L1) M4 x 17mm/0. 16" x 0. 67"(D*L); Weight: 90g Drive Type: Hex Socket; Main Color: Black Thread Pitch: 0. 7mm; Total Length: ( L ) 20mm/ 0. 8" Head Size: (D x t) 8 x 3mm/0. 3" x 0. 12"(D*T); Width Across Flat (S): 2mm/ 0. 08".