Description
Monster Overview:
Fix your project right the first time with Bulk 5/8-11 Button Head Socket Cap Screws from Monster Bolts. These heavy-duty fasteners are made from ASTM A574 alloy steel for maximum strength and reliability. The thermal black oxide + oil finish provides a sleek black appearance with mild corrosion resistance, ideal for machinery, automotive, and industrial applications.
Engineered to meet ASME B18.3 and IFI-111 standards, these coarse-thread (UNC) button head screws combine strength and precision for use in both professional and high-performance environments. All Monster Bolts black oxide fasteners are fully RoHS compliant for safe, quality manufacturing.
Monster Features:
- Material: High-strength alloy steel manufactured to ASTM A574 (12.9 metric equivalent).
- Finish: Thermal black oxide + oil for a professional, matte-black appearance with mild corrosion protection.
- Thread: 5/8"-11 UNC – Coarse Thread (Unified National Coarse).
- Drive: 3/8" Hex Key (Allen) Drive – Available here if you need a fresh one!
- Head Type: Button Head for low-profile, visually clean installations.
- Compliance: RoHS compliant black oxide finish and material composition.
Monster Specifications:
| Attribute | Specification |
|---|---|
| Diameter | 5/8" |
| Thread Size | 5/8"-11 UNC (Coarse Thread) |
| Drive Size | 3/8" Hex Key |
| Head Style | Button Head Socket Cap Screw |
| Material | Alloy Steel – ASTM A574 (12.9 Equivalent) |
| Finish | Thermal Black Oxide + Oil |
| Tensile Strength | 170,000 psi minimum |
| Hardness | Rockwell C37–C39 |
| 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: 3/8" 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.