Description
Monster Overview:
Bulk #12-24 × ½″ Indented Hex-Washer Head Taptite Alternative Thread-Rolling Screws from Monster Bolts pair a high-torque hex drive with an integrated washer that spreads load and protects finishes. Machined from hardened 410 stainless steel (martensitic, magnetic), these trilobular fasteners roll-form durable, reusable threads in untapped holes—saving time while delivering exceptional strength and vibration resistance in aluminum, mild steel, brass, and plastics.
The alloy is passivated & wax-coated for a spotless surface, added lubricity, and RoHS-compliant corrosion protection. Perfect for HVAC sheet-metal, appliance frames, truck bodies, and general fabrication that need stainless durability plus a secure flange-style head.
Monster Features:
- High-Strength 410 SS: Heat-treated martensitic stainless outperforms 18-8 in hardness and tensile strength.
- Thread-Rolling Efficiency: Creates internal threads in one step—no taps, chips, or secondary operations.
- Indented Hex-Washer Head: Hex-washer (flange hex) drive spreads load without a separate washer.
- Vibration Resistance: Interference fit & work-hardened threads keep joints tight under dynamic loads.
- Smoother Installs: Trilobular profile and wax top-coat cut friction for lower drive torque.
Monster Specifications
| Feature | Details |
|---|---|
| Diameter / Thread | #12-24 UNC |
| Length | 1/2″ – fully threaded |
| Head / Drive | Indented Hex-Washer (flange hex) |
| Point Style | Taptite-style trilobular thread-rolling |
| Material | 410 Stainless Steel (martensitic, magnetic) |
| Finish | Passivated + Wax (RoHS) |
| System of Measurement | US / Inch |
| Standards | Meets ASME B18.6.3 & IFI thread-rolling screw guidelines |
Also known as hex-washer head, indented-hex screw, or flange-hex screw, this drive style delivers high torque with a built-in washer—no separate hardware required.
More Monster Bolts:
Explore More Thread-Forming Options: Need other sizes or head styles? Browse our full Thread-Forming Screw Collection.
Need matching hardware? Bulk #12 washers available here.
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Note: (PT) denotes partial-thread fasteners; this listing is full-thread.