Best Seller Bulk 1/4″-20 Unslotted Indent Hex-washer Head Thread-cutting Screws — Type F, Bright-zinc & Hydrogen-relief Baked Collection [JHFfhCi9]

Monster Overview:

Built for trailer floors, steel framing, dock construction and timber-to-steel joints, these 1/4″-20 Unslotted Indent Hex-Washer Head Thread-Cutting Screws deliver high clamp load fast. Heat-treated carbon-steel blanks receive a bright zinc electro-plate, are hydrogen-relief baked, then factory dry-waxed for reliably low drive torque. The integral washer spreads load, while the Type F fluted point taps mating threads in a pre-drilled or punched hole—chips clear through the flute, no nut required.

Monster Features:

• Head / Drive: One-piece unslotted indent hex-washer (⅜″ AF) — smooth top forge; captive washer locks down on steel or wood.
• Type F Cutting Point: UNC machine thread with fluted slot — creates clean internal threads in 0.050–0.200″ steel plate or dense hardwood.
• Finish: Bright-zinc (RoHS) + light oil, hydrogen-relief baked, topped with factory dry-wax for consistent clamp load.
• Material: Heat-treated carbon steel for high shear and tensile strength.
• Bulk Packaging: Sealed master cartons — perfect for OEM fabrication, trailer shops & dock builders.

Monster Specifications:

• Diameter / Thread: 1/4″-20 UNC, Type F cutting point
• Head Style: Unslotted indent hex-washer (integral flange)
• Drive Size: ⅜″ hex
• Material: Heat-treated carbon steel
• Finish: Bright-zinc — baked & factory wax-lubed
• Cross-Reference: SAE J476 Type F / IFI 136

More Monster Bolts:

• Need other Type F sizes?
• Looking for PT / Plastite screws? Explore the full inch-series lineup.

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.