With Serrated ,Coarse thread,zinc plated,grade 8. 8. It fits with the nut for fastening the connection of two parts with through holes. Slip-resistant and durablel. Model # a15121600ux0674 Features: Head Style: Hex Head; Material: Zinc Plated(Grade 8. 8); Package Content: 25pcs x Hex Flange Bolt Product Name: Hex Flange Bolt; Thread Size: M8x16mm/0. 3"x0. 63"(D*L); Weight: 309g Coating: Zinc; Main Color: Silver Tone; Total Length: 23mm/0. 9" Battery Included: No; Thread Pitch(Coarse Thread): 1. 25mm; Flange Diameter: 17mm/0. 67" Hex Width: 12mm/0. 47"; Head Thickness: 7mm/0. 28".
