Description
Monster Overview:
Fix your project right the first time with 1/4-20 Slotted Indented Hex Washer Head Thread-Cutting Screws, Type 1, Zinc-Bake Finish from Monster Bolts. A single cutting edge and tapered machine-screw threads cut clean internal threads in sheet metal and other ductile materials, while the serrated integrated washer head locks firmly against vibration—no separate lock washer required.
The bright zinc-bake coating delivers dependable corrosion protection and meets RoHS requirements. Count on Monster Bolts for top-tier quality, fast U.S. shipping, and industry-leading customer support.
Monster Features:
- Serrated Self-Locking Flange: Integrated washer head bites into the workpiece to resist loosening.
- Duo-Drive Flexibility: Install with a ⅜″ hex socket/wrench or a flat-blade screwdriver via the slotted indent.
- Type 1 Cutting Point: Single cutting edge and blunt point form precise threads with low drive torque.
- Corrosion Resistance: Zinc-bake finish fights rust and is fully RoHS compliant.
- Quality Assurance: Manufactured to tight tolerances and batch-inspected to Monster Bolts standards.
Monster Specifications
| Feature | Details |
|---|---|
| Diameter / Thread | 1/4-20 UNC |
| Head / Drive | Slotted Indented Hex Washer (⅜″ A/F) – Serrated Flange |
| Point Style | Type 1 (single-edge, blunt point) |
| Material | Carbon Steel |
| Finish | Zinc-Bake (RoHS) |
| System of Measurement | US / Inch |
| Standards | ASTM F1941 Zn-B & SAE J933 |
More Monster Bolts:
Need complementary hardware?
• Bulk US-inch Nuts
• Bulk US-inch Washers
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Buy with confidence—every Monster Bolts order is backed by our commitment to quality, fast shipping, and customer satisfaction.