Description
Monster Overview:
Designed for outdoor steel framing, trailer decks and timber-to-steel joints, these 1/4″-20 Unslotted Indent Hex-Washer Head Thread-Cutting Screws are machined from corrosion-proof 18-8 (304) stainless steel. The integral washer spreads load on soft substrates, while the Type F fluted cutting point taps female threads in mild steel or dense hardwood — no nuts, pilot holes or chip clean-up. Passivated stainless plus a factory dry-wax film deliver low, repeatable drive torque and decades of rust-free performance. Bulk master cartons keep your per-piece cost monster-low.
Monster Features:
- Head / Drive: One-piece unslotted indent hex-washer (3/8″ AF) — nothing to clog with chips; captive washer locks down on steel or wood.
- Type F Cutting Point: UNC machine thread with fluted slot — perfect for 0.050 – 0.200″ steel plate or hardwood planks.
- Material Advantage: 18-8 stainless is food-safe, non-magnetic and resists coastal or chemical corrosion.
- Finish: Passivated + factory dry-wax lubricant (silicone-free) for consistent clamp load.
- Bulk Packaging: Sealed master cartons — ideal for dock builders, stainless fab shops & trailer manufacturers.
Monster Specifications:
- Diameter / Thread: 1/4″-20 UNC, Type F cutting point
- Head Style: Unslotted indent hex-washer (integral flange)
- Drive Size: 3/8″ hex
- Material: 18-8 (304) Stainless Steel — passivated
- Finish: Factory-applied dry-wax
- Cross-Reference: SAE J476 Type F / IFI 136
More Monster Bolts:
• Need other
stainless Type F sizes?
• Looking for
Plastite / PT thread-formers? Explore the full inch-series lineup.
Order Yours Today & Feel the Monster Bolts Difference!
Every bulk carton ships fast from our U.S. warehouse and is backed by Monster Bolts’ quality guarantee and responsive support.