Description
Monster Overview:
Eliminate loosening on vibrating assemblies with 5/16-18 Slot-Indented Serrated Hex-Washer Head Thread-Cutting Screws, Type 23, Bright Zinc-Bake. The built-in serrated flange digs into the mating surface for a positive lock, while the dual-drive head pairs a hefty 1/2″ across-flats hex with a full-width straight slot—drive it your way. At the tip, a Type 23 triangular chip-relief pocket ejects swarf while cutting, reducing drive torque and leaving crisp internal threads in structural steel, channel, or aluminum framing.
Bright zinc plating followed by hydrogen-relief bake provides reliable corrosion protection and meets RoHS regulations. Screws are fully threaded—simply select the length you need from the drop-down above.
Monster Features:
- Dual-Drive Head: 1/2″ A/F hex plus straight slot for maximum installation flexibility.
- Serrated Flange: Integral locking teeth resist loosening under shock and vibration.
- Type 23 Cutting Point: Large triangular pocket clears chips for smoother cutting & lower torque.
- Bright Zinc-Bake Finish: Shiny zinc coat with post-plate bake to mitigate hydrogen embrittlement—fully RoHS compliant.
- Monster Quality: Tight tolerances, batch inspection, and fast U.S. shipping.
Monster Specifications
| Feature | Details |
|---|---|
| Diameter / Thread | 5/16-18 UNC |
| Length | Fully threaded — select length above |
| Head / Drive | Slot-Indented Hex Washer — 1/2″ A/F & straight slot |
| Flange Design | Serrated underside for anti-vibration grip |
| Point Style | Type 23 (triangular chip-relief) |
| Material | Carbon Steel |
| Finish | Bright Zinc-Bake (RoHS) |
| System of Measurement | US / Inch |
| Standards | ASME B18.6.4 & IFI-111 |
More Monster Bolts:
Need complementary hardware?
• Bulk US-inch Nuts
• Bulk US-inch Washers
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