Description
Monster Overview:
Fix your project right the first time with Bulk 5/16-24 Button Head Socket Cap Screws from Monster Bolts. These precision-engineered fasteners are made from ASTM A574 Alloy Steel and feature a fine-thread (UNF) design ideal for applications requiring tight tolerances and vibration resistance. The thermal black oxide + oil finish provides a professional matte-black appearance with mild corrosion resistance.
Designed to deliver consistent clamping strength and long service life, these Monster Bolts black oxide socket screws are fully RoHS compliant and meet or exceed 12.9 metric strength equivalency.
Monster Features:
- Material: High-strength alloy steel meeting ASTM A574 (12.9 metric equivalent).
- Finish: Thermal black oxide + oil for a smooth, low-glare finish and mild corrosion protection.
- Thread: 5/16"-24 UNF – Fine Thread (Unified National Fine).
- Drive: 3/16" Hex Key (Allen) Drive – Available here if you need a fresh one!
- Head Type: Button Head – smooth, low-profile design for finished surfaces.
- Compliance: RoHS compliant black oxide process and materials.
Monster Specifications:
| Attribute | Specification |
|---|---|
| Diameter | 5/16" |
| Thread Size | 5/16"-24 UNF (Fine Thread) |
| Drive Size | 3/16" 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: 3/16" 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.