Gangtong Zheli is China manufacturer & supplier who mainly produces 1/4-2"ASME/ANSI B 18.2.1 Grade 2 5 8 Zinc Plated Hex Head Cap Screws with many years of experience. Hope to build business relationship with you. Zinc-plated hex head cap screws are used in a wide range of applications, including construction, automotive, machinery, and general hardware installations. The zinc plating makes them a cost-effective choice for providing corrosion resistance in less demanding environments.These screws come in various sizes and thread types to suit different fastening needs. The choice of screw size and specifications should match the specific requirements of your project or application.
Hot rolled wire rod - Dial (cold) - Spheroidizing annealing (softening) - mechanical descaling - acid - cold dial - - thread processing - heat treatment - Test
Strength Grades | ||||
Grade | Tensile (psi) | Yield (psi) | Percentage of tensile strength before yield | Proof (psi) |
1 | 60000 | 36000 | 60% | 33000 |
2 | 74000 | 57000 | 77% | 55000 |
5 | 120000 | 92000 | 77% | 85000 |
8 | 150000 | 130000 | 87% | 120000 |
9 | 180000 | 155000 | 87% | 145000 |