Description
Monster Overview:
Fix your project right the first time with Bulk 1/4-20 Button Head Socket Cap Screws from Monster Bolts. Manufactured from high-strength ASTM A574 Alloy Steel and finished in a durable thermal black oxide + oil coating, these screws combine strength, reliability, and a sleek matte-black look. Their low-profile button head design provides smooth, snag-free fastening in furniture, machinery, and mechanical assemblies.
All Monster Bolts black oxide socket fasteners are fully RoHS compliant and ship directly from our U.S. warehouse for fast, reliable delivery.
Monster Features:
- Material: Premium alloy steel meeting ASTM A574 (12.9 metric equivalent strength).
- Finish: Thermal black oxide + oil for a clean appearance and mild corrosion protection.
- Thread: 1/4"-20 UNC – Coarse Thread (Unified National Coarse).
- Drive: 5/32" Hex Key (Allen) Drive – Available here if you need a fresh one!
- Head Type: Button head for low-profile fastening and smooth surfaces.
- Compliance: Black oxide process is fully RoHS compliant.
Monster Specifications:
| Attribute | Specification |
|---|---|
| Diameter | 1/4" |
| Thread Size | 1/4"-20 UNC (Coarse Thread) |
| Drive Size | 5/32" Hex Key |
| Head Style | Button Head Socket Cap Screw |
| Material | Alloy Steel – ASTM A574 (12.9 Equivalent) |
| Finish | Thermal Black Oxide + Oil |
| Tensile Strength | 180,000 psi (≤ 1/2"), 170,000 psi (> 1/2") |
| Hardness | Rockwell C39 minimum |
| Standards | ASME B18.3 / IFI-111 |
Measurement Note:
Length is measured from under the head to the tip of the screw. Button heads are not included in the overall measurement.
Matching Products:
- Matching Nuts: Bulk U.S. Inch Nuts
- Matching Washers: Bulk U.S. Inch Washers
- Hex Keys: 5/32" Allen Key – Available here
Order Yours Today:
Buy with confidence! Every order from Monster Bolts is backed by our commitment to quality, fast shipping, and customer satisfaction.