Thread Rolling Die with Anti-Rotation Knurls – M2 HSS, Custom Sizes

Specialized thread rolling die integrated with serrated knurls (commonly called "claw teeth" or "gripping knurls") for simultaneous thread forming and anti-rotation serration. Manufactured from M2 High-Speed Steel, ideal for screws that require both a formed thread and a serrated underhead or shank section to prevent loosening in soft materials.

Key Specifications

Product Name :Thread Rolling Die with Knurls / Claw Teeth Die Thread Type: Machine thread, tapping thread, or custom Knurl Type :Straight / Diamond / Serrated (per drawing) Available Sizes :M2 – M8 (custom on request) Material: M2 ,SKH-9 Hardness 62–64 HRC Surface Option: Precision ground, optional NTR Application :Self-drilling screws, chipboard screws, wood screws, drywall screws Machine Type: Flat die thread rolling machines MOQ :1 set Lead Time: 15–25 working days Packing :Anti-rust paper + export carton

Product Description

Our knurled thread rolling dies combine standard thread rolling with serrated knurl forming in a single die pass. The "claw teeth" section—positioned at the die entry or along the thread zone—forms sharp serrations on the screw shank or underhead area. These serrations bite into the mating material upon installation, providing strong anti-rotation resistance without additional locking elements. This integrated design eliminates the need for a separate knurling operation, reducing cycle time and improving production efficiency. The knurl geometry (pitch, depth, and angle) is engineered to match your screw drawing and application requirements. Made from M2 HSS with optimized heat treatment, the die maintains sharp knurl definition and resists wear even in high-volume continuous production.

Key Features

- ✅ Integrated Thread + Knurl Forming – One-pass operation, no secondary process - ✅ Anti-Rotation Grip – Serrated "claw" section prevents screw loosening - ✅ Custom Knurl Geometry – Straight, diamond, or serrated per your drawing - ✅ M2 HSS Construction – Long tool life under continuous cold forming - ✅ Reduced Cycle Time – Faster production, lower cost per piece - ✅ Precision CNC Ground – Consistent knurl pitch and thread accuracy

Applications

- Self-drilling and self-tapping screws with anti-rotation serrations - Chipboard and particle board screws - Wood screws with serrated shank - Drywall screws with underhead knurls - Any screw requiring enhanced holding power in soft materials

Why Choose Us

- Specialized in Knurled Die Manufacturing – Deep experience with claw tooth and serrated profiles - Custom Engineering – Knurl pitch, depth, and angle tailored to your screw design - Strict Quality Control – Hardness testing and profile inspection on every die - Factory Direct Pricing – Competitive rates for OEM and repeat orders - Fast Delivery – Standard configurations ready in 15–25 days

Ordering Guide

Please provide the following for an accurate quote: 1. Thread specification (size, pitch, type) 2. Knurl type (straight / diamond / serrated) and location on screw 3. Knurl pitch and depth (or send screw drawing/sample) 4. Screw material (carbon steel / stainless steel) 5. Machine brand & model 6. Order quantity 📩 Send your drawing or sample → Quote within 24 hours.

FAQ

Q: What is the purpose of the knurl on a screw? A: The knurl (claw teeth) creates a serrated surface that bites into the base material, preventing the screw from rotating or loosening under vibration—especially useful in wood, chipboard, and plastic. Q: Can you add knurls to any thread type? A: Yes. We can integrate knurls into machine thread, tapping thread, and self-drilling screw dies. Send us your drawing and we will engineer the die accordingly. Q: Do you support custom knurl patterns? A: Absolutely. Knurl pitch, depth, angle, and pattern (straight/diamond/serrated) can all be customized to your specification.