Description
Monster Overview:
Drive, cut, clamp—done. These 1/4″-20 Slotted Hex-Washer Thread-Cutting Screws give you bolt-level holding power without a backing nut, perfect for trailer skins, HVAC cabinets, appliance frames, dock plates and hardwood-to-steel joints. The indented hex head with integral washer spreads load and helps seal oversize holes, while a broad flat-blade slot offers a back-up drive when a socket won’t fit. Blanks are heat-treated carbon steel, finished in brilliant bright-zinc plating, hydrogen-relief baked to IFI spec, then factory dry-waxed 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 weld, no nut.
Monster Features:
- Dual-Drive Convenience: Indented 1/4″ hex head (3/8″ 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 sheet-metal.
- Type F Cutting Point: UNC machine thread with fluted slot—forms threads in 0.050–0.200″ steel plate or dense hardwood; chips exit cleanly.
- Bright-Zinc Finish: RoHS-compliant plating, hydrogen-relief baked, factory dry-waxed for consistent clamp load.
- Material: Heat-treated carbon steel delivers excellent tensile & shear strength.
- Bulk Packaging: Factory-sealed cartons—ideal for OEM fabrication, trailer shops & structural-steel installers.
Monster Specifications:
- Diameter / Thread: 1/4″-20 UNC — Type F cutting point (fully threaded)
- Head Style: Slotted indented hex-washer (3/8″ wrench)
- Drive Methods: External hex • flat-blade screwdriver
- Material: Heat-treated carbon steel
- Finish & Lube: Bright-zinc plated, hydrogen-relief baked & factory dry-waxed
- Standards: SAE J476 Type F • IFI 136
More Monster Bolts:
• Browse the full
Type F thread-cutting lineup
• Need thread-formers? Check our
PT / Plastite collection
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.