Description
Monster Overview:
Fix your project right the first time with #4-40 Serrated Hex Washer Taptite Alternative Screws from Monster Bolts. These tri-lobular thread-rolling fasteners create clean internal threads on drive-in, while the integral serrated washer head locks tight against vibration—ideal for small electronic enclosures, stamped brackets, and thin-wall sheet metal.
Each case-hardened steel screw is CR+3 zinc plated, bake-relieved to eliminate hydrogen embrittlement, and top-coated with a dry-film wax that lowers installation torque and adds a second layer of corrosion protection. Fully RoHS compliant, they ship quickly from our Florida warehouse with industry-leading support.
Monster Features:
- Self-Threading Power: Taptite-style tri-lobular point taps its own threads—no chips, no pre-tapping.
- Vibration Grip: Integral serrated washer flange bites into mating surfaces to resist loosening.
- Smooth Assembly: Zinc bake + wax finish reduces drive torque and enhances corrosion resistance.
- Full Thread (Tap-Bolt): Maximizes grip length and pull-out strength in both stocked sizes.
- Size Options: Choose 3⁄8″ or ½″ fully-threaded lengths to match your build requirements.
Monster Specifications:
| Attribute | Value |
|---|---|
| Diameter / Thread | #4-40 UNC |
| Available Lengths | 3⁄8″, ½″ (both full thread) |
| Head / Drive | Unslotted Indented Hex Washer, 3⁄16″ external hex |
| Washer Feature | Integral serrated under-head flange |
| Point Style | Taptite Alternative tri-lobular thread-rolling |
| Material | Case-hardened steel |
| Finish | CR+3 zinc plating, bake-relieved, dry-film wax |
| Compliance | RoHS compliant |
| Standards | Meets ASME B18.6.1 / SAE J1237 performance |
More Monster Bolts:
Need matching #4-40 nuts & washers? Available here for a complete solution.
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