Description
Monster Overview:
When standard countersinks are too shallow or sheet-metal is wafer-thin, choose #4-40 Phillips Flat-Undercut Thread-Cutting Screws. The undercut head trims most of the 82 ° cone, giving you maximum thread engagement while finishing perfectly flush in sheet as thin as 0.040″. Heat-treated carbon steel sports a brilliant bright-zinc electro-plate, is hydrogen-relief baked to banish embrittlement, and topped with a factory dry-wax film for ultra-low, repeatable seating torque. A Type F fluted point taps clean internal threads in a pre-drilled or punched hole; chips clear through the flute—no nut required.
Monster Features:
- Undercut Head: Shallow 82 ° countersink keeps heads flush in sheet down to 0.040″ while preserving full thread length.
- Flush Seating & Drive: Phillips #0 recess—precision-driver ready, minimal cam-out.
- 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: RoHS-compliant plating, hydrogen-relief baked, factory dry-waxed for consistent clamp load.
- Material: Heat-treated carbon steel delivers high tensile & shear strength in miniature sizes.
- Bulk Packaging: Sealed master cartons—ideal for electronics OEMs, model-makers & precision fabrication where thin sheet meets flush fit.
Monster Specifications:
- Diameter / Thread: #4-40 UNF — Type F cutting point (fully threaded)
- Head Style: 82 ° flat-undercut countersunk, Phillips drive
- Drive Size: Phillips #0
- 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:
• Explore the full
Type F thread-cutting lineup
• Need thread-formers? See our
PT / Plastite collection
Order Yours Today & Feel the Monster Bolts Difference!
Every bulk carton ships quickly from our U.S. warehouse and is backed by Monster Bolts’ quality guarantee and responsive support.