Description
Monster Overview:
Speed up structural installs and forget about rust with 5/16-18 Unslotted Indented Hex Washer Head Thread-Cutting Screws, Type 23, 18-8 Stainless from Monster Bolts. The unslotted hex drive takes a standard 1/2″ socket or wrench for high torque, while the built-in washer head spreads load—no separate flat washer required. A Type 23 triangular chip-relief pocket at the tip ejects swarf as it cuts, lowering drive torque and leaving cleaner internal threads than straight-slotted or lobed points.
Machined from non-magnetic, food-safe 18-8 (A2) stainless, these screws thrive in marine, outdoor, and wash-down environments with zero plating to chip or peel. Stocked in ¾″ and 1″ fully-threaded lengths—select yours above.
Monster Features:
- Unslotted Hex Drive: 1/2″ A/F hex installs fast and resists cam-out.
- Integrated Washer Head: Indented hex washer head distributes clamp load without extra hardware.
- Type 23 Cutting Point: Triangular chip pocket ejects debris for smooth cutting and low drive torque.
- 18-8 Stainless Steel: Long-term corrosion resistance—no coating required.
- Monster Quality: Tight tolerances, batch inspection, and rapid U.S. shipping.
Monster Specifications
| Feature | Details |
|---|---|
| Diameter / Thread | 5/16-18 UNC |
| Available Lengths | ¾″ & 1″ (full thread) |
| Head / Drive | Unslotted Indented Hex Washer — 1/2″ A/F |
| Point Style | Type 23 (triangular chip-relief) |
| Material | 18-8 Stainless Steel (A2) |
| Finish | Passivated Stainless — no coating |
| 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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