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.
Matching holders and lubricants are available separately.
| Thread type | Tapered pipe thread Rc (BSPT), 55°, taper 1:16 |
| Standard | DIN 374 |
| Form | Form C |
| Material | HSSE |
| Nominal size | Rc 1/8 × 28 |
| Overall length (L1) | 90 mm |
| Thread length (L2) | 20 mm |
| Shank diameter (D2) | 7 mm |
| Drive square | 5.5 mm |
| EAN | 4022835734048 |
| Article number | 73404 |
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.
| 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 |
Be the first to review “Machine Tap DIN 374 Form C HSSE - Rc (BSPT) 1/8 x 28”
