GUWANJI 12.9 Grade Hex Socket Cap Head Screw

GUWANJI 12.9 grade high-strength alloy steel hexagon socket cap head screws. Featuring a durable blackened finish and coarse thread, these extended bolts comply with GB/T 70.1 standard, ensuring reliable performance for heavy-duty applications.

type: Internal hexagon socket head cap screw Surface treatment: Black Tooth type: coarse thread Material: alloy steel Performance level: 12.9 Full thread / Partial thread: Half-thread Implementation Standards: GB /T 70.1