Description
Monster Overview:
Bulk 3/8-16 Slotted Indented Hex-Washer Head Taptite Alternative Thread-Rolling Screws from Monster Bolts give you true job-site flexibility—drive them with a 9/16″ nut-driver for speed or a big flat-blade screwdriver when power tools aren’t handy. Their beefy trilobular bodies roll-form reusable threads in untapped steel and aluminum, shaving production time while locking up tight against vibration.
A bright zinc bake & wax finish supplies lubricity for lower drive torque plus RoHS-compliant corrosion protection. Perfect for truck bodies, heavy-equipment panels, HVAC framing, and general fabrication that needs a rugged flange-style head with a backup slot.
Monster Features:
- Combo Slot + Hex Drive: Two tool options (slot or hex) for field service versatility.
- Integrated Washer Flange: Indented hex-washer head spreads load—no separate washer needed.
- Thread-Rolling Efficiency: Forms internal threads in a single pass—no taps or chips.
- Vibration Resistance: Interference fit & work-hardened threads stay tight on the road or in the plant.
- Smoother Installs: Trilobular profile plus wax top-coat cut friction for faster, lower-torque runs.
Monster Specifications
| Feature | Details |
|---|---|
| Diameter / Thread | 3/8-16 UNC |
| Available Lengths | Fully threaded — select length above |
| Head / Drive | Slotted Indented Hex-Washer (combo slot-hex) |
| Point Style | Taptite-style trilobular thread-rolling |
| Material | Carbon Steel |
| Finish | Zinc Bake & Wax (RoHS) |
| System of Measurement | US / Inch |
| Standards | Meets ASME B18.6.3 & IFI thread-rolling guidelines |
Also called slotted hex-washer, indented hex-slot, or combo slot-hex screws, this head style delivers high torque with a backup flat slot—no separate washer 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 3/8″ washers available here.
Order Yours Today and Experience the Monster Bolts Difference!
Buy with confidence! Every order from Monster Bolts ships fast and is backed by our commitment to quality and customer satisfaction.
Note: (PT) denotes partial-thread fasteners; this listing is full-thread.