Standard: ASME B18.2.1
Product Name: UNF Hex Head Bolt Black Oxide
Key Words: ASME B18.2.1, UNF
Size: 1/4″-2″
Material: 10B21, 35K, 45# steel
Stength Grade: Grade 5, Grade 8
Surface Treatment: Black Oxide
Thread Length: Full Thread/ Half Thread
Thread Type: Coarse/Fine
Packing: Carton/Pallet
Other Features: Offer customized head mark