1. Introduction

The DIN 352 HSSE VAP Hand Tap 3pcs Set represents the pinnacle of manual threading technology for tough materials. This set is specifically engineered for Stainless Steel (Inox) and high-tensile alloys where precision and alignment are critical.

What sets this kit apart is the integrated Guide Pin on the No.1 (Taper) tap, which ensures the tool remains perfectly coaxial with the pre-drilled hole, eliminating the common issue of "tilted" threads during manual operation. Manufactured from HSSE (M35 Cobalt High-Speed Steel) and treated with a VAP (Steam Oxide) finish, these taps provide the heat resistance and lubricity required to prevent work-hardening and tool welding in stainless steel applications.

2. Technical Specifications (Technical Data)

Standard Size Availability (Metric)
• Small Range: M3, M4, M5, M6
• Medium Range: M8, M10, M12, M14
• Large Range:
M16, M18, M20
*Full technical dimensions (Overall Length/Thread Length) adhere to DIN 352 industrial standards.

3. Core Applications & Technical Advantages

Stainless Steel Specialist: The HSSE (Cobalt) base maintains a sharp cutting edge at higher temperatures, while the VAP finish creates a porous surface that retains tapping oil, significantly reducing friction.

Perfect Alignment with Guide Pin: Manual tapping often fails due to crooked entry. The No.1 tap features a non-threaded pilot pin that fits into the drill hole first, forcing the tap to stay 100% vertical.

Superior Thread Finish: The three-stage tapping process (Taper -> Plug -> Bottoming) gradually removes material, resulting in a high-precision thread with minimal stress on the workpiece.

Heavy-Duty Maintenance: Ideal for onsite repairs in chemical plants, food processing facilities, and marine environments where stainless steel is the primary material.

4. Wholesale & Logistics Focus (B2B)

For global importers and large-scale wholesalers, we offer a supply chain solution optimized for high-value tools:
 

Protective Packaging: The 3-piece set is housed in a robust Industrial Plastic Rose-Box or a customized metal case. Each set is vacuum-sealed with high-performance anti-rust oil.
 

Quality Consistency: We employ 100% batch testing for cobalt concentration and thread concentricity. Since 1997, our factory has maintained a <0.1% defect rate for international shipments.
 

Branding & OEM: We offer high-definition Laser Etching on the shanks (Brand Logo + DIN 352 + HSSE-VAP) and private label packaging for regional distributors.

5. FAQ (Frequently Asked Questions)

Q: What is the specific benefit of the VAP (Steam Oxide) finish?

A: VAP treatment creates a black oxide layer that acts as a lubricant carrier. In stainless steel, this prevents "cold welding" (where the material sticks to the tap), ensuring a much smoother thread surface and longer tool life.

Q: Why is a 3-piece set better than a single-pass machine tap for manual work?

A: Manual tapping lacks the rigid guidance of a machine spindle. Splitting the load across three taps reduces the torque required at each stage, dramatically reducing the risk of tap breakage in expensive workpieces.

Q: Does the guide pin work with all drill sizes?

A: The guide pin is precisely ground to match the standard tapping drill size for that specific thread (e.g., a 4.2mm pin for an M5 tap), ensuring a snug, guiding fit.