Description
Monster Overview:
Proudly Made in the USA, these Bulk 1/4"-28 Socket Head Cap Screws are engineered from premium alloy steel and finished with a durable thermal black oxide coating. The fine UNF thread delivers superior clamp load control, making these screws ideal for precision assemblies and equipment where accuracy and consistency matter.
All Monster Bolts USA-made black oxide socket fasteners are fully RoHS compliant and ship fast from our U.S. warehouse.
Monster Features:
- Origin: USA-made for verified material traceability and consistent quality.
- Material: Alloy Steel per ASTM A574 with thermal black oxide finish.
- Thread: 1/4"-28 UNF (Fine Thread) — for greater clamp precision and vibration resistance.
- Drive: 3/16″ Hex (Allen). Hex keys available here.
- Applications: Ideal for robotics, mechanical tooling, engine assembly, and instrumentation.
Monster Specifications:
| Specification | Details |
|---|---|
| Diameter | 1/4" |
| Thread Size | 1/4"-28 UNF (Fine Thread) |
| Drive Size | 3/16″ Hex (Allen) |
| Head Type | Socket Head Cap Screw (SHCS) |
| Material / Finish | Alloy Steel, Thermal Black Oxide |
| Standards | ASME B18.3 / IFI-111 / ASTM A574 |
| Compliance | RoHS Compliant |
| Origin | USA |
More Monster Bolts:
Matching Hardware: Pair these 1/4"-28 fasteners with Bulk U.S. Inch Nuts and Bulk U.S. Inch Washers for a complete fastening solution.
Order Yours Today!
Dependable, precision, USA-made fasteners — Monster Bolts delivers alloy steel socket head cap screws built for demanding applications, shipped fast from our U.S. warehouse.