Bulk #4-40 Slotted Indented Hex Washer Thread Cutting Screw Type 23 – Full Thread Zinc-Bake (1/4" & 5/8")

Monster Overview:

Finish small-scale sheet-metal projects with #4-40 Slotted Indented Hex-Washer-Head Thread-Cutting Screws, Type 23, Bright Zinc-Bake. Drive them fast using a ¼″ across-flats hex nut-driver, or reach tight corners with a flat-blade screwdriver via the full-width slot. The Type 23 triangular chip-relief pocket ejects swarf while tapping—lowering drive torque and leaving crisp internal threads in stainless, mild steel, or aluminum sheet down to ~0.040″.

A broad, non-serrated washer flange spreads clamp load without gouging painted or plated panels. Bright zinc plating followed by a hydrogen-relief bake supplies dependable corrosion protection and full RoHS compliance. Two fully-threaded stock lengths—¼″ for shallow bosses and ⅝″ for stacked laminations—cover most electronics and hobby builds.

Monster Features:

• Dual-Drive Head: ¼″ hex and straight slot for maximum installation flexibility.
• Integrated Washer Flange: Wide bearing surface distributes load—no separate washer needed.
• Type 23 Cutting Point: Large triangular pocket clears chips for smoother cutting & low drive 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 rapid U.S. shipping.

Monster Specifications

More Monster Bolts:

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

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