Description
Monster Overview:
Tame your plastic assemblies with Bulk M3.5-1.57 Torx®/6-Lobe Pan Head Thread-Forming Screws from Monster Bolts! Their 30° thread-forming flank displaces material to form strong, re-tightenable internal threads— no pre-tapping, no chips, and no stripped bosses. A zinc plate & bake finish relieves hydrogen embrittlement and supplies a bright, RoHS-compliant corrosion barrier.
Monster Features
- Thread-Forming Design: thread-forming profile, 1.57 mm pitch, 30° flank for secure joints in plastics.
- Stress-Friendly: Optimized geometry minimizes boss expansion and lowers drive torque.
- Drive: Internal Torx® (6-lobe star) T15—high torque transfer, zero cam-out.
- Finish: Zinc plated & baked—bright, clean, and fully RoHS compliant.
- Quality: Precision-machined carbon-steel fasteners backed by Monster Bolts support.
Monster Specifications
| Feature | Details |
|---|---|
| Diameter / Pitch | M3.5 × 1.57 mm (Thread-Forming) |
| Available Lengths | Fully threaded — select length above |
| Head / Drive | Pan Head / T15 Torx® (6-lobe) |
| Thread Form | 30° self-forming thread-forming profile (for thermoplastics) |
| Material | Carbon Steel |
| Finish | Zinc & Bake (RoHS) |
| System of Measurement | Metric |
| Standards / Reference | Thread-forming screw design reference (non-OEM) |
More Monster Bolts
Need other sizes? Explore our complete range of Metric Thread-Forming Screws. Available here.
Order Yours Today and Experience the Monster Bolts Difference!
Buy with confidence—every order ships fast from the USA and is backed by our commitment to quality and customer satisfaction.


