Description
Monster Overview:
Fix your project right the first time with Bulk 5/16" Indent Hex Washer Head Type A Self-Tapping Screws from Monster Bolts. Finished with a Zinc CR+3 (trivalent chromium) coating, these screws provide a clean appearance and a mild layer of corrosion protection suitable for general-purpose and structural fastening applications.
The indent hex washer head (HWH) design supports high-torque installation while the integrated washer surface helps distribute load and resist pull-through. These fasteners are commonly used in metal buildings, framing systems, industrial enclosures, and heavy-duty sheet metal assemblies.
Note: This size is commonly referenced as #20 in some catalogs. The functional thread designation is 5/16"-9.
Monster Features:
- Finish: Zinc CR+3 coating (RoHS compliant).
- Thread Type: Type A self-tapping thread for heavier-gauge metal and structural applications.
- Head Style: Indent hex washer head for high torque and load distribution.
- Drive: Indent hex drive for secure installation.
- Applications: Steel framing, metal buildings, racking systems, and industrial construction.
Monster Specifications:
| Screw Size | 5/16" |
| Alternate Size Reference | #20 (legacy designation) |
| Thread Designation | 5/16"-9 |
| Thread Type | Type A Self-Tapping |
| Head Style | Indent Hex Washer Head (HWH) |
| Drive | Indent Hex |
| Lengths | Multiple lengths available |
| Finish | Zinc Plated, CR+3 (Trivalent Chromium) |
| System | US / Inch |
| Compliance | RoHS Compliant |
More Monster Bolts:
Matching Hardware: Pair these screws with compatible zinc-plated washers and accessories from Monster Bolts for a complete heavy-duty fastening solution.
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