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Heavy-duty bolts feature larger across-flats dimensions on the head and a thicker head, and are high-strength. Applicable standards are ASTM A325 and A490. Stock surface treatments include black oxide, hot-dip galvanizing, and Teflon. Customization in various materials is available. Common sizes: 1/
Thread Specifications and Performance Grades
The thread specification range for hex bolts is M1.6~M64, which can be fully threaded. Performance grades include 5.6, 8.8, 9.8, 10.9, A2-70, A4-70, A2-50, A4-50, CU2, CU3, AL4, etc. Among them, G
Heavy-duty bolts feature larger across-flats dimensions on the head and a thicker head, and are high-strength. Applicable standards are ASTM A325 and A490. Stock surface treatments include black oxide, hot-dip galvanizing, and Teflon. Customization in various materials is available. Common sizes: 1/2", 5/8", 3/4", 7/8", etc.
