FAMOUS Steel Engineering Company
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Heavy Hex Structural Bolts Steel Buildings Kits With Alloy Steel And ASTM
Our hot dip galvanized high tension hex bolts have been tested according to national building codes for corrosion resistance, mechanical performance, holding performance, delayed mechanical failure characteristics and actual performance, and have received general certification from the Land, Infrastructure and Transport Minister.
Imperial head markings and mechanical properties | ||||||
Grade identification marking | Specification | Nominal size range [in] | Proof strength [ksi] | Yield strength (min) [ksi] | Tensile strength (min) [ksi] | Core hardness [Rockwell] |
ASTM A490 Type 1 | 1⁄2–1-1⁄2 | 120 | 130 | 150 minimum | C33–38 | |
ASTM A490 Type 2 (withdrawn) | 1⁄2–1 | |||||
ASTM A490 Type 3 | 1⁄2–1-1⁄2 | |||||
Head markings and strengths for metric hex-head cap screws | ||||||
Grade identification marking | Specification | Nominal size range [mm] | Proof strength [MPa] | Yield strength (min) [MPa] | Tensile strength (min) [MPa] | Core hardness [Rockwell] |
ASTM A490M Type 1 | 12–36 | 830 | 940 | 1040 | C33–39 | |
ASTM A490M Type 2 (withdrawn) | ||||||
ASTM A490M Type 3 | ||||||
various bolts for steel structure frames are available in storage. they are proofed high performance by our millions of structural projects. Welcome your trial order and visit.
