Bulk 1/4"-20 Slot Indented Hex Washer *Serrated* Thread Cutting Screw Type 23 – Full Thread Zinc-Bake

Monster Overview:

Lock out vibration and cut your own threads in one step with 1/4-20 Slot-Indented Serrated Hex-Washer Head Thread-Cutting Screws, Type 23, Bright Zinc-Bake. The dual-drive head pairs a standard 7/16″ across-flats hex for high-torque installs with a full-width straight slot for flat-blade access. Under the washer-style flange, sharp serrations bite into the mating surface, resisting loosening from shock or vibration. At the tip, a Type 23 triangular chip-relief pocket ejects swarf as it taps—lowering drive torque and leaving clean internal threads in steel, aluminum, or mild alloys.

Bright zinc plating plus hydrogen-relief bake supplies classic corrosion protection and full RoHS compliance. Screws are fully threaded; simply select your required length from the drop-down above.

Monster Features:

• Dual-Drive Head: 7/16″ hex and straight slot for maximum field flexibility.
• Serrated Flange: Integrated locking teeth grip the material, preventing back-out under vibration.
• Type 23 Cutting Point: Large triangular pocket clears chips for smoother cutting & lower torque.
• Bright Zinc-Bake Finish: Shiny zinc coat with post-plate bake to relieve hydrogen embrittlement—fully RoHS compliant.
• Monster Quality: Tight tolerances, batch inspection, and fast U.S. shipping.

Monster Specifications

More Monster Bolts:

Need complementary hardware?
• Bulk US-inch Nuts
• Bulk US-inch Washers

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