Aozhan Industrial Grade 12.9 Blackened Hex Bolt Kit

This Aozhan Industrial Grade 12.9 Hex Head Bolt Kit features high-strength carbon steel construction with a durable blackened finish. Each set includes a partial-thread hex head bolt, flat washer, spring washer, and nut, meeting GB5782 standards for robust fastening applications.

Material: Carbon Steel Implementation Standards: National Standard length: 0 Pitch: 1.25 type: Four-piece screw assembly Surface treatment: Black Performance level: 12.9