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High-quality thread tap by Völkel GmbH from Remscheid, perfect for cutting internal threads in metal.
Technical drawing of a VÖLKEL thread tap with labeled diameters and lengths.
A technical drawing shows a tap with the label “2–3 threads” indicating the distance of 2–3 threads.
High-quality thread tap by Völkel GmbH from Remscheid, perfect for cutting internal threads in metal.
Technical drawing of a VÖLKEL thread tap with labeled diameters and lengths.
A technical drawing shows a tap with the label “2–3 threads” indicating the distance of 2–3 threads.
Rc (BSPT) tapered

Machine Tap DIN 374 Form C HSSE - Rc (BSPT) 1/8 x 28

Item no. 73404

€25.00

in stock - more than 100 pieces available
Application

Machine Tap DIN 374 Form C HSSE – Rc (BSPT) 1/8 × 28

This high-performance machine tap from VÖLKEL, manufactured according to DIN 374 Form C, is designed for cutting tapered pipe threads Rc (BSPT). With a short lead (Form C) and precise geometry, it is ideal for producing accurate and leak-proof threads in through and blind holes. Made from HSSE, it ensures long service life, excellent wear resistance, and smooth cutting results in steels up to 900 N/mm².

Application
  • For general use
  • For non abrasive materials up to 900 N/mm²
  • For unalloyed and low alloyed steels
  • For through and blind holes
  • Tapered thread design for leak-tight joints

Contents
  • 1× Machine Tap HSSE – Rc (BSPT) 1/8 × 28 – DIN 374, Form C

Matching holders and lubricants are available separately.

Technical Data
Thread typeTapered pipe thread Rc (BSPT), 55°, taper 1:16
StandardDIN 374
FormForm C
MaterialHSSE
Nominal sizeRc 1/8 × 28
Overall length (L1)90 mm
Thread length (L2)20 mm
Shank diameter (D2)7 mm
Drive square5.5 mm
EAN4022835734048
Article number73404

Step-by-Step Instructions
  1. Drill the core hole as specified for BSPT and slightly deburr the edge.
  2. Securely clamp the tap and ensure correct alignment.
  3. Apply cutting oil generously and reapply as needed.
  4. Cut the tapered thread steadily and evenly.
  5. Clean the thread and check with a BSPT gauge or fitting.

FAQ

What’s the difference between Rc and R?
Rc refers to internal tapered threads, while R refers to external BSPT threads.

How does the seal work?
The 1:16 taper creates a self-sealing fit without needing additional sealant, though thread tape can be added.

Can it be used for stainless steel?
Only conditionally – for INOX, a TiN or TiCN-coated version is recommended.

What does HSSE stand for?
High Speed Steel with cobalt for improved heat resistance and durability.

Can it be used manually?
Yes, but a machine setup provides more consistent precision.

Need more details? Contact us anytime via our contact form.

Additional information
Type of thread tapered pipe thread, taper 1:16, con. 55°
Standard DIN 374
Form Form C
Material HSSE
Tolerance medium
Size Rc (BSPT) 1/8 x 28
Overall length (L1) 90 mm
Thread length (L2) 20 mm
Core hole diameter (D1) 8.2 mm
Shank diameter (D2) 7.0 mm
Drive connector 5.5 mm
EAN 4022835734048
Item number 73404
Type of flute straight fluted
Application for through and blind holes
Thread standard ISO 7-1

Machine Tap DIN 374 Form C HSSE – Rc (BSPT) 1/8 × 28

This high-performance machine tap from VÖLKEL, manufactured according to DIN 374 Form C, is designed for cutting tapered pipe threads Rc (BSPT). With a short lead (Form C) and precise geometry, it is ideal for producing accurate and leak-proof threads in through and blind holes. Made from HSSE, it ensures long service life, excellent wear resistance, and smooth cutting results in steels up to 900 N/mm².

Application
  • For general use
  • For non abrasive materials up to 900 N/mm²
  • For unalloyed and low alloyed steels
  • For through and blind holes
  • Tapered thread design for leak-tight joints

Contents
  • 1× Machine Tap HSSE – Rc (BSPT) 1/8 × 28 – DIN 374, Form C

Matching holders and lubricants are available separately.

Technical Data
Thread typeTapered pipe thread Rc (BSPT), 55°, taper 1:16
StandardDIN 374
FormForm C
MaterialHSSE
Nominal sizeRc 1/8 × 28
Overall length (L1)90 mm
Thread length (L2)20 mm
Shank diameter (D2)7 mm
Drive square5.5 mm
EAN4022835734048
Article number73404

Step-by-Step Instructions
  1. Drill the core hole as specified for BSPT and slightly deburr the edge.
  2. Securely clamp the tap and ensure correct alignment.
  3. Apply cutting oil generously and reapply as needed.
  4. Cut the tapered thread steadily and evenly.
  5. Clean the thread and check with a BSPT gauge or fitting.

FAQ

What’s the difference between Rc and R?
Rc refers to internal tapered threads, while R refers to external BSPT threads.

How does the seal work?
The 1:16 taper creates a self-sealing fit without needing additional sealant, though thread tape can be added.

Can it be used for stainless steel?
Only conditionally – for INOX, a TiN or TiCN-coated version is recommended.

What does HSSE stand for?
High Speed Steel with cobalt for improved heat resistance and durability.

Can it be used manually?
Yes, but a machine setup provides more consistent precision.

Need more details? Contact us anytime via our contact form.

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