Description
Monster Overview:
Tiny but tough—these #4-40 Slotted Hex-Washer Thread-Cutting Screws replace fiddly nuts and bolts in electronics enclosures, HVAC control panels, appliance skins, RC models and dense hardwood-to-steel trim. The indented hex head with integral washer spreads load and hides oversize holes, while a deep flat-blade slot gives a back-up drive when a socket can’t reach. Heat-treated carbon steel carries a brilliant, RoHS-compliant bright-zinc finish, is hydrogen-relief baked for safety, then factory dry-waxed for silky-low, repeatable seating torque. A Type F fluted point taps clean internal threads in a pre-drilled or punched hole; chips exit through the flute—no backing nut, no chip clean-up.
Monster Features:
- Dual-Drive Head: Indented #4 hex (¼″ wrench) plus broad slot—drive with socket, nut-runner or flat screwdriver.
- Washer Head Advantage: Built-in 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 0.020–0.050″ steel sheet or dense hardwood; chips exit cleanly.
- Bright-Zinc Finish: Corrosion-resistant plating, hydrogen-relief baked, factory dry-waxed for consistent clamp load.
- Material: Heat-treated carbon steel delivers high tensile & shear strength in micro sizes.
- Bulk Packaging: Factory-sealed master cartons—ideal for OEM electronics, model makers & precision fabrication lines.
Monster Specifications:
- Diameter / Thread: #4-40 UNF — Type F cutting point (fully threaded)
- Lengths Offered: ¼″ (0.250 in.) & ⅜″ (0.375 in.)
- Head Style: Slotted indented hex-washer (¼″ 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 complete
Type F thread-cutting lineup
• Need thread-formers? Explore 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 the Monster Bolts quality guarantee and responsive support.