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Gr12.9 Black ASTM High Strength Bolts Carbon Steel Hex Head Bolts
Material: Carbon Steel
Finish: Black Oxide
Standard: ASME/ANSI B18.2.3.3M-2001
Certification: ISO9001
MOQ:1000PCS
Samples: Free
Place of Origin: Zhejiang China
Product Details
Product Description
High-Strength Carbon Steel Construction
Broad Size & Thread Range
Superior Corrosion Protection
| Jiaxing Goshen Hardware Co.Ltd | ||||||||
| Name | Gr12.9 Black ASTM High Strength Bolts | Material | Alloy Steel | |||||
| Standard | ANSI/SIME | Surface | Black Oxide | |||||
| Size | M12-M36 | Package | Standard marine packaging | |||||
| Stock | Regualar Have In Stock | Head Mark | Customized By Buyer | |||||
| Export Region | Europe,North America,Middle East and More other | |||||||
Precision Head & Marking
Standard hex head (DIN 933/ISO 4017, ASME B18.2.1) with raised manufacturer logo, property class, and laser lot code for full traceability.
Manufactured from C1008–C1022, 40Cr, or 42CrMo to meet ISO 898-1 and SAE J429 standards. Available in grades 4.8–12.9, Grade 2–8, ASTM A325/A490.
Metric M5–M64, Imperial 1/4"–2-1/2", lengths up to 20". Rolled threads (6g/6h, UNC/UNF) after heat treatment for superior fatigue resistance.
Plain, zinc-plated (5–12 µm), hot-dip galvanized (45–80 µm), Geomet®, DACROMET®, or PTFE coatings. All finishes are RoHS & REACH compliant
