Description
Monster Overview:
Delivering strength, precision, and a clean flush finish, Bulk 1/2"-20 Flat Head Socket Cap Screws from Monster Bolts are made from premium alloy steel with a durable thermal black oxide coating. The 82° flat head allows for a completely flush fit, making these screws ideal for machinery, metal fabrication, and high-strength mechanical assemblies.
All Monster Bolts black oxide socket fasteners are RoHS compliant and ship directly from our U.S. warehouse for fast delivery.
Monster Features:
- Thread: 1/2-20 UNF (Fine Thread) for tight-tolerance, high-strength applications.
- Material: High-strength alloy steel with a thermal black oxide finish for mild corrosion resistance and uniform black color.
- Drive: 5/16″ hex recess (Allen). Hex keys available here.
- Head Style: 82° Flat Head for a fully flush, professional finish.
- Applications: Industrial machinery, jigs and fixtures, metal fabrication, and mechanical assemblies.
Monster Specifications:
| Specification | Details |
|---|---|
| Diameter | 1/2″ |
| Thread Size | 1/2-20 UNF (Fine Thread) |
| Drive Size | 5/16″ Hex (Allen) |
| Head Type | 82° Flat Head Socket Cap Screw (FHCS) |
| Material | Alloy Steel |
| Finish | Thermal Black Oxide |
| Standards | ASME B18.3 / IFI-111 / ASTM A574 |
| Compliance | All black oxide socket fasteners are fully RoHS compliant |
| Origin | Ships from U.S. Warehouse |
More Monster Bolts:
Matching Hardware: Pair these 1/2-20 fine-thread screws with Bulk U.S. Inch Nuts and Bulk U.S. Inch Washers for a complete fastening solution.
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Buy with confidence — fast U.S. shipping and Monster Bolts quality back every order.


