Description
Monster Overview:
Fix your project right the first time with M3.5-1.57 Flat-Head 6-Lobe PT Alternative Thread-Forming Screws in A2 / 18-8 stainless steel from Monster Bolts. Their 30° trilobular profile cold-flows thermoplastic bosses, creating chip-free, vibration-resistant threads, while corrosion-proof stainless construction excels in outdoor, medical, and electronic enclosures that demand long-term durability.
Monster Features
- Flat Countersunk Head 90°: Sits flush for a snag-free, professional finish.
- 6-Lobe Drive: Star / Torx® / hexalobular recess (T15) supplies high torque with minimal cam-out.
- 30° PT Trilobular Thread: 1.57 mm pitch forms strong internal threads at lower drive torque than machine screws or inserts.
- A2 Stainless Steel: Rust-proof 18-8 alloy resists moisture, mild chemicals, and outdoor exposure.
- Passivated & Wax-Lubricated: Clean, bright finish plus factory PT wax for smoother installation and reduced boss stress (RoHS compliant).
- Full Thread: Fully threaded shank grips plastics of any thickness.
Monster Specifications
| Feature | Details |
|---|---|
| Diameter / Pitch | M3.5 × 1.57 mm (PT trilobular, 30°) |
| Available Lengths | 6 mm – 25 mm (fully threaded) |
| Head / Drive | Flat Countersunk 90° / T15 6-Lobe |
| Thread Form | PT Alternative, 30° trilobular thread-forming |
| Material | A2 / 18-8 Stainless Steel |
| Finish | Passivated & Wax-Lubricated (RoHS) |
| System of Measurement | Metric |
| Trademark Notice |
EJOT® and PT® are registered trademarks of EJOT® GmbH & Co. KG. These screws are not manufactured or authorized by EJOT. |
More Monster Bolts
Need zinc-plated versions or different head styles? Explore our complete Metric PT-Style Screw collection .
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