Hex Socket Cap Head Screw, High Strength Fully Threaded Allen Bolt

Product Introduction

Hex socket cap head screw, also known as Allen bolt, is a mainstream high-strength fastening part for precision machinery. The cylindrical head with internal hexagon greatly saves installation space compared with outer hex bolts, which is suitable for deep hole and narrow gap assembly. The full thread design ensures complete locking within the effective length of the workpiece, no loose interval. Raw materials cover medium carbon steel and stainless steel, with multiple strength grades to meet light load and heavy load working conditions. The knurled texture on the side of the cylinder head increases friction during manual pre-tightening, avoiding tool slipping.

Product Advantages

1. Internal Hex Drive Structure: Small occupation space, suitable for compact equipment and mold assembly.

2. Full Complete Thread: Full-length thread provides uniform locking force, strong anti-loosening effect.

3. Multi-Grade High-Strength Material: 4.8-12.9 carbon steel and stainless steel optional, bearing heavy shear and tensile load.

4. Multi-Surface Treatment Options: Black oxide, galvanized, passivation, stainless steel raw finish for anti-rust demands.

5. Customized Production Service: Custom thread diameter, length, thread pitch and head size according to customer drawings.

Application Fields

- Precision injection molds, stamping molds, mechanical fixture fixed connection

- Automated production equipment, industrial robots, motor shell, transmission assembly

- Automobile engine, chassis, interior metal bracket, new energy vehicle structural parts

- Engineering machinery, hydraulic equipment, agricultural machinery, pump valve shell fastening

- Steel frame, aluminum alloy frame, communication equipment, medical precision instruments

Factory Strength

We are a professional high-strength hex socket cap head screw manufacturer with 20 years of fastener production experience. The factory owns full-automatic cold forging production lines, precision thread rolling machines and professional surface treatment workshops. We accept small-batch sample customization and large-volume bulk orders. All Allen bolts will pass hardness test, thread tolerance inspection and torque test before delivery, stable delivery cycle and factory direct wholesale price.