Description
Monster Overview:
Fix your project right the first time with Bulk 1/2-20 Socket Head Cap Screws in 18-8 stainless steel. The UNF fine thread provides precise torque control, smooth engagement, and secure fastening while stainless construction ensures long-term corrosion resistance and a clean, professional appearance for marine, automotive, and industrial applications.
Monster Features:
- Thread: 1/2-20 UNF (Fine Thread) for precise adjustment and vibration resistance.
- Material: 18-8 (A2) stainless steel for durable corrosion resistance and strength.
- Head / Drive: Socket Head Cap Screw (SHCS) with 3/8″ hex (Allen). Hex keys available here.
- Applications: Automotive, marine, robotics, industrial, and precision equipment assembly.
Monster Specifications:
| Specification | Details |
|---|---|
| Diameter | 1/2″ (0.5000″) |
| Thread Size | 1/2-20 UNF (Fine Thread) |
| Drive Size | 3/8″ Hex (Allen) |
| Head Type | Socket Head Cap Screw (SHCS) |
| Material | 18-8 Stainless Steel (A2) |
| Finish | Passivated Stainless (as produced) |
| Standards | ASTM F837 / ASME B18.3 |
| Origin | Ships from U.S. Warehouse |
More Monster Bolts:
Matching Hardware: Pair these 1/2-20 fine-thread screws with our Bulk U.S. Inch Nuts and Bulk U.S. Inch Washers for a complete fastening solution.
Order Yours Today!
Buy with confidence — fast U.S. shipping and Monster Bolts quality back every order.



