Description
Monster Overview:
Fix your project right the first time with 5/16-18 Serrated Hex Washer Taptite Alternative Screws from Monster Bolts. Designed for secure assemblies in sheet metal, structural steel, and softer alloys, these tri-lobular thread-rolling fasteners form clean internal threads on drive-in while their integral serrated washer head locks tight against vibration.
Each case-hardened steel screw receives a CR+3 zinc coating, is bake-relieved to eliminate hydrogen embrittlement, and is top-coated with a dry-film wax that reduces friction and adds a secondary layer of corrosion protection. Fully RoHS-compliant and backed by industry-leading support, they ship quickly from our Florida warehouse.
Monster Features:
- Self-Threading Power: Tri-lobular Taptite-style point forms threads in untapped holes—no chips, no taps.
- Vibration Grip: Built-in serrated washer flange bites into the mating surface to resist loosening.
- Smooth Assembly: Zinc bake + wax finish lowers drive torque and improves corrosion resistance.
- Full Thread (Tap Bolt): Provides maximum grip length and pull-out strength.
- Bulk Savings: Lower your cost per unit—ideal for production, maintenance, and repair operations.
Monster Specifications:
| Attribute | Value |
|---|---|
| Diameter / Thread | 5/16-18 UNC |
| Available Lengths | 1", 1-1/2" (all full thread) |
| Head / Drive | Unslotted Indented Hex Washer, 1/2" 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 5/16-18 nuts & washers? Available here to complete the job.
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