Mũi taro ren tay (tạo ren trong) set of 3 chiếc DIN 352 HSS-G - BSW 1.1/4 x 7

VÖLKEL Mũi taro ren tay (tạo ren trong) 3‑chiếc Set DIN 352 HSS‑G – BSW 1¼ × 7

For manually creating robust Whitworth threads in a wide range of materials, the VÖLKEL Mũi taro ren tay (tạo ren trong) 3‑chiếc Set DIN 352 HSS‑G – BSW 1¼ × 7 is your indispensable companion! This set includes all three required taps for precise, step‑by‑step manual threading—suitable for through‑holes and lỗ bít alike.

Made from HSS‑G (ground high‑performance high‑speed thép)these taps ensure sharp cutting edges, excellent wear resistance, and long service life even under heavy use.

Your application advantages:

• Versatile use: Ideal for commonly machinable materials up to 900 N/mm² tensile strength.

• thép machining: Especially suited to unalloyed and low‑alloy steels.

• For through‑ and blind‑holes: The 3‑chiếc set works universally in both types.

• Hand use: Optimized for use with a Tay quay taro.

This set cuts a precise Whitworth BSW 1¼ × 7 thread to BS 84 standard.

What’s in the 3‑chiếc set?

A classic three‑chiếc Mũi taro ren tay (tạo ren trong) set comprises:

1. Plug (first) tap – long chamfer (6–8 threads): Prepares the thread start.

2. Intermediate tap – shorter chamfer (4–5 threads): Deepens the thread.

3. Bottom (finishing) tap – shortest chamfer (2–3 threads): Completes the thread to full depth and tolerance.

Using them in sequence ensures clean, dimensionally accurate threads—especially in tougher materials or larger sizes.

Advantages of a 3‑chiếc set

• Tool-friendly: Material removal is shared, reducing stress on each tap.

• Improved thread quality: Gradual cutting yields cleaner profiles and fewer defects.

• Less manual effort: Easier to start and smoother cutting.

• Versatile hole types: Chamfered taps handle both through and lỗ bít efficiently.

• Low breakage risk: Stepwise approach reduces the chance of tap breakage.

DIN 352 – Standard for Mũi taro ren tay (tạo ren trong)

DIN 352 is a German standard specifying dimensions and requirements for Mũi taro ren tay (tạo ren trong).

• Specifically designed for manual operation.

• Defines geometry for plug, intermediate, and bottom taps.

• Robust construction ensures durability while hand‑tapping.

BSW – British Standard Whitworth thread

BSW (British Standard Whitworth) is a historic yet still widely used thread standard.

• Invented by Sir Joseph Whitworth in the 19th century.

• Features a 55° flank angle and rounded roots and crests.

• BSW 1¼ × 7: Diameter 1.25 inches (~31.75 mm), 7 threads per inch—coarse and durable.

• BS 84 standard ensures compatibility with Whitworth hardware.

Application:

dùng cho ứng dụng thông dụng

• non abrasive material up to 900 N/mm²
• unalloyed and low alloyed thép
• for through and lỗ bít
• for cắt ren by hand