Steel Zp Gal Astm A325 A307 Gr2 Gr5 193 B7 Full Half Thread Hexagon Socket Cap Head Metal Screw With Knurled

Steel Zp Gal Astm A325 A307 Gr2 Gr5 193 B7 Full Half Thread Hexagon Socket Cap Head Metal Screw With Knurled

This knurled hex socket head cap screw is manufactured from carbon or alloy steel conforming to multiple industrial standards: ASTM A325 (high-strength structural bolt), A307 (general-purpose carbon steel bolt), GR2/GR5 (strength grades within A325 family), and A193 B7 (alloy steel for high-temperature service) . Thread options: full or half thread. Finish: zinc plated (ZP). Knurling under the head aids hand starting. This product range provides a broad material selection – from general structural A307 to high-temperature B7 to high-strength structural A325. The knurled design allows hand tightening, and the hex socket drive transmits high torque.

Temporary fastening in steel structure connections – A325 knurled screws for hand starting on site.

High-temperature pipe flanges – A193 B7 with half thread plain shank for positioning.

General industrial machinery assembly – A307 zinc plated economical option.

Bridge inspection walkways – knurling allows operation with gloves.

Pressure vessel manway covers – B7 full thread with knurling.

Multiple standard compliance – meets various industry codes.

Knurling enhances handling – especially for gloved work.

Flexible thread length – full or half thread as needed.

Zinc plating – basic corrosion protection at controlled cost.

High-temperature option – A193 B7 for elevated temperature service.