Description
Monster Overview:
Put bolt-strength clamp force wherever you need it—no backing nut required. These #12-24 Slotted Hex-Washer Thread-Cutting Screws are forged from 410 martensitic stainless steel, heat-treated to Rockwell C38-45 for wear resistance and threaded engagement, yet still deliver the corrosion protection you expect from stainless. An indented hex head with integral washer spreads load and covers oversize holes, while the broad flat-blade slot offers a back-up drive when a socket can’t fit. Screws are passivated for added rust resistance and finished with a factory dry-wax film for smooth, repeatable seating torque. The 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 welds.
Monster Features:
- Dual-Drive Head: Indented #12 hex (5/16″ wrench) plus wide slot—use a socket, impact gun or flat screwdriver.
- Integrated Washer: Enlarged bearing surface resists pull-through and helps seal joints in thin sheet-metal.
- Type F Cutting Point: UNC machine thread with fluted slot—forms threads in 0.060–0.200″ steel plate or dense hardwood; chips exit cleanly.
- Material Advantage: 410 stainless is magnetic, heat-hardened and tougher than 18-8 while retaining corrosion resistance.
- Finish & Lube: Passivated surface + factory dry-wax (silicone-free) for consistent clamp load.
- Bulk Packaging: Factory-sealed master cartons—ideal for trailer fabrication, marine fixtures, food-equipment frames & stainless construction projects.
Monster Specifications:
- Diameter / Thread: #12-24 UNC — 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 collection
• Need thread-formers? Explore our
PT / Plastite lineup
Order Yours Today & Feel the Monster Bolts Difference!
Every bulk carton ships quickly from our U.S. warehouse and is backed by the Monster Bolts quality guarantee and responsive support.