Knurled Step Position Screw, Blue Zinc Plated Non-Standard Knurled Bolt

Product Introduction

The knurled step screw is a special customized fastener designed for positioning and anti-slip assembly. It adopts one-step cold forging molding, which greatly improves the overall structural strength compared with secondary processed screws. The knurled tooth section under the round head provides strong friction force to eliminate rotation and sliding during press-fit installation. The multi-stage step shaft realizes accurate limit assembly for plastic shells and metal brackets. The surface is treated with blue white galvanization to resist oxidation and rust in damp working environment.

Product Advantages

1. Anti-slip Knurling Design: Vertical knurl texture increases press-fit friction, no rotation after installation.

2. Integrated Cold Forging: No loose structure, high tensile strength, not easy to break under pressure.

3. Precise Step Limiting: Multi-step diameter difference realizes fixed depth assembly, uniform product assembly effect.

4. Excellent Anti-corrosion Treatment: Blue zinc plating with uniform coating, long service life outdoors and in vehicle parts.

5. Full Customization Service: Adjust total length, step thickness, knurl length and thread specifications per customer drawings.

Application Fields

- Automobile interior & exterior plastic parts, vehicle electronic module positioning

- Plastic injection molding embedded fixing bolts, plastic shell assembly

- Household appliances, communication equipment, electronic hardware fixed connection

- Small automation equipment, precision instrument limit fasteners

Factory Strength

We are a professional manufacturer specializing in custom non-standard fasteners for over 20 years. Equipped with automatic cold forging machines, precision thread rolling machines and full set of size testing instruments. We support small batch sample trial production and mass bulk orders. Strict full inspection of thread tolerance, knurl size and surface treatment before shipment, stable delivery cycle and competitive factory direct price.