⭐ Thread Forming Taps (Extrusion Taps) – Complete Product Introduction

Thread forming taps—also known as extrusion taps or roll taps—create internal threads by cold forming rather than cutting.
This chip-free process produces stronger threads, better surface finish, and significantly longer tool life, making thread forming taps ideal for high-precision, high-volume production.

🎨 1. Coating Options

① Uncoated

Ideal for soft and ductile materials such as aluminum, zinc alloy, and plastics.
Provides extremely low friction and smooth forming performance.

Benefits:

• Best choice for aluminum and soft metals

• Clean surface finish

• Cost-effective for mass production

② TiN Coating (Titanium Nitride)

A classic gold-colored, universal coating.

Benefits:

• Increased wear resistance and heat resistance

• Suitable for steel, stainless steel, cast iron, aluminum

• Excellent for medium-to-high production volumes

③ Rainbow / Multi-Color Coating

A high-lubricity multi-layer coating with a colorful oxide finish.

Benefits:

• Extra-smooth forming torque

• Significantly improved tool life in difficult-to-form materials

• Best for stainless steel, alloy steel, and high-strength materials

④ Cobalt Type (HSS-E / Cobalt Coated)

Made from cobalt-enhanced high-speed steel or cobalt-treated surfaces.

Benefits:

• Excellent red hardness and heat stability

• Best choice for stainless steel, alloy steel, difficult materials

• Stable forming pressure and long service life

📏 2. Product Categories (14 Types)

① Metric Thread Forming Taps

Standard ISO metric threads for general machining applications.

• Size range: M0.5–M30

• Accuracy: RH4 / RH5 / RH6 / RH7

• Suitable for aluminum, steel, stainless steel

• Stronger thread profile due to chip-free forming

② Valve Stem Thread Forming Taps

Designed specifically for valve stems / valve nozzles in automotive and compressor industries.

• Optimized forming geometry

• Stable torque and excellent surface finish

• Suitable for aluminum, brass, zinc alloy components

③ UNC / UNF Thread Forming Taps (American Standard)

Inch-based threads widely used in North America and global markets.

• UNC / UNF / UN series

• Typical sizes: 4-40 to 3/4

• Applications: automotive, machinery, electronics

④ British Standard Thread Forming Taps (BSW / BSF)

Used in the UK, India, Southeast Asia.

• Common sizes: 1/8, 3/16, 1/4, 5/16

• For machinery repair, hardware parts, pipe fittings

⑤ Metric Long Type Thread Forming Taps

Designed for deep holes, pocket machining, and interference-avoidance.

• Extended shank L1/L2

• Ideal for deep cavities in automotive or die-casting parts

• Optional TiN / Rainbow coatings for longer tool life

⑥ UNC Long Type Thread Forming Taps

Long-shank forming taps for inch-series deep holes.

Used widely in North American automotive and machinery industries.

⑦ Metric Left-Hand Thread Forming Taps

Left-hand direction for reverse-locking or anti-loosen applications.

• Used in motors, machinery, fastening components

⑧ UNC Left-Hand Thread Forming Taps

Left-hand American thread series for specialized assembly requirements.

⑨ Metric Thread-Insert Forming Taps

Designed for Helicoil / wire thread insert pre-thread processing.

• Slightly oversized thread profile

• Ensures perfect insert engagement

• Suitable for aluminum, magnesium, aerospace components

⑩ UNC Thread-Insert Forming Taps

Same function as metric type, for UNC/UNF thread inserts.

⑪ Sewing Machine (Industrial Textile) Thread Forming Taps

Special taps used in sewing machine and micro-mechanism components.

• Very fine threads

• High accuracy and stability

• Ideal for thin-wall parts and small holes

⑫ Pipe Thread Forming Taps

For G / PF / PT / BSP pipe thread series.

• Used in plumbing, pneumatic, hydraulic components

• Stronger sealing threads due to cold forming

⑬ Metric Clearance-Type Thread Forming Taps

Designed with a reduced or slim shank for tool clearance.

• Avoids interference in deep pockets

• Improves machining stability

• Ideal for die-casting parts, automotive housings

⑭ UNC Clearance-Type Thread Forming Taps

Same structure as metric type, optimized for UNC/UNF threads.

🏭 3. Applications

Thread forming taps are widely used in:

• Automotive parts (valve stems, housings, brackets)

• Die-cast components (aluminum, zinc, magnesium)

• Electronics and 3C industries

• Precision machinery

• Hydraulic & pneumatic systems

• Home appliances

• Textile machinery

⭐ 4. Key Advantages

• Chip-free forming, no swarf clogging or tool breakage

• 20–30% stronger threads thanks to work-hardening effect

• Excellent surface finish

• 2–4× longer tool life compared to cutting taps

• Stable forming torque suitable for automation and mass production

📦 5. OEM / ODM Capabilities

We provide:

• Complete metric, UNC, UNF, BSW, pipe thread systems

• Custom coatings (TiN, Rainbow, Cobalt)

• Special shank styles: long type, clearance type, reduced shank

• Private branding, laser marking, customized packaging