DIN 352 Hand Tap Set: Materials, Structure & Buying Guide
A DIN 352 hand tap set is a standard solution for cutting internal metric threads manually. It is widely used in maintenance, workshop repair, and general engineering applications where precision and control are required.
In this guide, we explain what DIN 352 means, how the 3-piece structure works, and how to choose the right material grade for your market.
What Is DIN 352?
DIN 352 is a German industrial standard that specifies the dimensions, tolerances, and technical requirements for metric hand tap sets.
A DIN 352 tap set typically includes three taps, designed to gradually cut internal threads:
1.Taper Tap (No.1) – Long lead-in (7–9 threads) for starting threads smoothly
2.Second Tap (No.2) – Medium lead (3–5 threads) for intermediate cutting
3.Bottoming Tap (No.3) – Short lead (1–2 threads) for finishing threads to full depth
This 3-piece configuration ensures clean, precise threads while reducing stress on the tool and material.
Why the 3-Piece Structure Matters
Unlike machine taps that complete threading in one operation, DIN 352 hand taps divide the cutting process into three controlled stages. This design allows smoother chip evacuation and better alignment, especially when working manually.
For maintenance work, installation jobs, and small-batch production, the three-piece system offers better safety and higher precision.
Material Options: Alloy Steel, HSS & HSS-E
▪Alloy Steel DIN 352 tap sets are an economical solution for general-purpose threading. They are suitable for mild steel and basic repair work where cutting speed and tool life requirements are moderate. This option is popular in price-sensitive markets and retail hardware sectors.
▪High-Speed Steel (HSS) tap sets provide improved hardness, heat resistance, and longer service life compared to alloy steel. They perform well in carbon steel and medium-strength materials, making them a balanced choice for professional workshops and distributors seeking reliable quality at competitive cost.
▪HSS-E (Cobalt Alloy) offers enhanced wear resistance and superior performance in stainless steel and tougher alloys. With higher red-hardness and durability, HSS-E tap sets are designed for demanding industrial environments where tool life and precision are critical.
Conclusion
A DIN 352 hand tap set remains a fundamental threading tool thanks to its three-stage cutting structure and wide range of material options. From economical alloy steel versions to high-performance HSS-E sets, choosing the right grade ensures efficiency, durability, and consistent thread quality.
For bulk orders or OEM customization of DIN 352 hand tap sets, feel free to contact us for detailed specifications and quotations.
Post time: Feb-27-2026
