Description
Monster Overview
Skip loose nuts and welds—#8-32 Slotted Hex-Washer Thread-Cutting Screws cut their own threads and clamp like bolts in a single operation. Forged from 410 martensitic stainless steel and heat-treated to Rockwell C38-45, they offer the wear strength of hardened carbon steel while keeping stainless corrosion resistance. The indented hex head with integral washer distributes load and covers oversize holes, while a broad flat-blade slot provides a back-up drive in tight spots. Screws are passivated for extra rust protection and finished with a factory dry-wax film for predictably low seating torque. A Type F fluted point taps clean internal threads in a pre-drilled or punched hole; chips exit through the flute—no chip clean-up, no backing nut.
Monster Features
- Dual-Drive Head: Indented #8 hex (5/16″ wrench) plus wide slot—socket, nut-runner or flat driver.
- Integrated Washer: Enlarged bearing surface resists pull-through and helps seal joints in thin sheet-metal.
- Type F Cutting Point: UNF machine thread with fluted slot—forms threads in 0.030–0.125″ steel sheet or dense hardwood; chips exit cleanly.
- Material Edge: 410 stainless is magnetic, heat-hardened and tougher than 18-8 yet still corrosion-resistant.
- Finish & Lube: Passivated surface + factory dry-wax (silicone-free) for consistent clamp load.
- Bulk Packaging: Factory-sealed master cartons—ideal for OEM electronics, trailer fabrication, marine fixtures & stainless construction projects.
Monster Specifications
- Diameter / Thread: #8-32 UNF — Type F cutting point (fully threaded)
- Head Style: Slotted indented hex-washer (5/16″ wrench)
- Drive Methods: External hex • flat-blade screwdriver
- Material: 410 heat-treated stainless steel (Rc 38-45), passivated
- Lubricant: Factory dry-wax film
- Standards: SAE J476 Type F • IFI 136
More Monster Bolts
• Browse the complete
Type F thread-cutting lineup
• Need thread-formers? Explore our
PT / Plastite collection
Order Yours Today & Feel the Monster Difference!
Every bulk carton ships quickly from our U.S. warehouse and is backed by the Monster Bolts quality guarantee and responsive support.