304 Stainless Steel Hex Head Three Combination Screw, Integrated Bolt With Flat & Spring Washer

Product Introduction

304 stainless steel three combination hex screw is a one-piece pre-assembled fastener. The screw body, flat washer and spring washer are tightly matched into one piece during production, which saves manual gasket assembly steps and greatly improves on-site installation efficiency. The main raw material is premium 304 stainless steel, which has excellent oxidation resistance and acid-base corrosion resistance, can maintain stable performance in humid coastal environments, outdoor solar equipment and light chemical equipment. The built-in spring washer forms elastic pressure after tightening, which can eliminate assembly gaps, resist mechanical vibration and effectively prevent the bolt from loosening during long-term operation. Standard hexagonal head design adapts to all kinds of wrenches and electric tightening tools, convenient for automatic assembly line production.

Product Advantages

1. One-Piece Three-Part Design: Pre-installed flat washer and spring washer, high assembly efficiency.

2. 304 Stainless Steel Material: Rust-proof, acid and alkali resistant, applicable to harsh outdoor and humid environments.

3. Built-In Spring Washer Anti-Loosening: Elastic shock absorption, avoid loose connection caused by equipment vibration.

4. Standard Hexagonal Head: Compatible with manual and automatic tightening tools, wide application range.

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

Application Fields

- Photovoltaic brackets, solar power generation equipment outdoor fixed connection

- New energy vehicle battery shell, motor bracket, automotive interior and exterior parts assembly

- Electrical cabinets, communication equipment chassis, electronic instrument shell fastening

- Outdoor stainless steel engineering, water treatment equipment, light chemical machinery assembly

- Industrial automation equipment, metal racks, household and industrial hardware connection

Factory Strength

We are a professional custom combination screw manufacturer with 20 years of fastener production experience. The factory owns fully automatic cold forging assembly lines, stainless steel processing workshops and complete precision testing equipment. We support small-batch sample trial production and large-volume bulk wholesale orders. All stainless steel three combination screws will pass size inspection, salt spray corrosion test and anti-loosening vibration test before delivery, stable delivery cycle and factory direct sales price.