Thread rolling die for trilobular scrw M3-20*16

High-precision trilobular (triangle) thread rolling die engineered for M3 self-tapping screws. Manufactured from M2 High-Speed Steel, featuring a 20×16 mm plate size and double-sided usable design. Optimized for blank diameter 2.30 mm and major diameter 2.99–3.01 mm, delivering superior anti-loosening performance and extended tool life.

Key Specifications

Product Name :Trilobular Thread Rolling Die / Triangle Screw Plat

Thread Size: M3 (Metric)

Plate Size :90/105*25*25mm

Material: M2 ,SKH-9

Wire Diameter: 2.30 mm

Outer Diameter:2.99 – 3.01 mm

Design Feature: Double-Sided Design (Two working surfaces for extended life)

Hardness :62–64 HRC

Thread Type: Trilobular / Triangle / Taptite

Surface Finish: Precision Ground, Optional NTR

Application: Self-tapping screws, sheet metal screws, anti-vibration fasteners

Machine Type: Flat die thread rolling machines

MOQ : 1 set

Lead Time :15–20 working days

Packing : Anti-rust paper + export carton

Product Description

Our M2 HSS Trilobular Thread Rolling Dies are specifically designed for manufacturers producing high-quality M3 self-tapping and anti-vibration screws.

Unlike standard metric threads, trilobular (triangle) threads require extremely precise radial relief and lobe geometry to ensure proper material displacement. These dies are CNC-ground to match the exact trilobular profile, ensuring the formed screws provide excellent resistance to vibration loosening while reducing driving torque.

Optimized for M3 Self-Tapping

This die is calibrated for a blank diameter of 2.30 mm and produces a finished major diameter of 2.99–3.01 mm, strictly controlling pitch diameter and lobe consistency to meet tight tolerance requirements.

Duble-Sided Design for Maximum Value

Featuring a double-sided usable design, this die offers two working surfaces. When one side wears out, the die can be flipped to use the second side, effectively doubling the service life and reducing tooling costs for high-volume production.

Made from M2 High-Speed Steel with optimized heat treatment (62–64 HRC), the die maintains its cutting edge and wear resistance even under continuous high-pressure cold forming.

Key Features

- ✅ Precision Trilobular Profile: Ensures excellent anti-vibration and self-tapping performance

- ✅ Double-Sided Usable: Two working surfaces per die, effectively doubles tool life

- ✅ M2 HSS Material: High wear resistance and toughness for continuous production

- ✅ Tight Dimensional Control: Blank 2.30 mm → Major dia 2.99–3.01 mm, consistent pitch

- ✅ Reduced Driving Torque: Smooth trilobular geometry minimizes work hardening

Applications

- Self-tapping screws (Taptite, Plastite type)

- Sheet metal fasteners

- Electronics and electrical enclosure screws

- Automotive interior and trim fasteners

- Any application requiring vibration-resistant threaded fasteners

Why Choose Us

- Specialized in Trilobular Tooling: Deep experience in triangle/taptite die manufacturing

- Strict Tolerance Control: Every die inspected for profile accuracy and hardness

- Cost-Effective: Double-sided design maximizes your tooling investment

- Custom Engineering: We can adjust geometry based on your specific screw design

- Fast Turnaround: Standard sizes ready in 15–20 days