The VÖLKEL machine tap according to JIS B-4430 in Form B, made of HSS-G (ground high speed steel), is designed for precise taper pipe threads Rc (BSPT). The Rc internal thread with a 1:16 taper and 55° flank angle ensures a tight, self-sealing connection. Thanks to Form B, it is particularly suitable for through holes and can be used for both manual and machine tapping.
This machine tap offers the following advantages and applications:
Q1: What is the difference between Rc and R threads?
A1: Rc stands for the internal taper pipe thread (BSPT), while R refers to the external taper pipe thread. Both are conical (1:16) with a 55° flank angle and provide self-sealing connections.
Q2: What does Form B mean for taps?
A2: Form B has a medium chamfer length, making it particularly suitable for through holes by combining guidance and chip space.
Q3: What are the advantages of HSS-G?
A3: HSS-G is ground high speed steel, providing high dimensional accuracy, improved tool life, and clean thread surfaces.
Q4: Which materials can be tapped with this tool?
A4: Suitable for non-abrasive materials up to 900 N/mm², especially unalloyed and low alloy steels.
Q5: Can this tap be used both manually and with machines?
A5: Yes, it is designed for universal use in both hand and machine tapping with proper clamping and lubrication.
Do you have specific questions about the use of this machine tap or need advice for other thread types? We are happy to assist! You can reach us anytime via our contact form.
| Type of thread | tapered pipe thread, taper 1:16, con. 55° |
|---|---|
| Standard | JIS B-4430 |
| Form | Form B |
| Material | HSS-G |
| Tolerance | medium |
| Size | Rc (BSPT) 1/16 x 28 |
| Overall length (L1) | 55 mm |
| Thread length (L2) | 19 mm |
| Core hole diameter (D1) | 6.3 mm |
| Shank diameter (D2) | 8.0 mm |
| Drive connector | 6.0 mm |
| EAN | 4022835975021 |
| Item number | 97502 |
| Type of flute | straight fluted |
| Application | for through holes |
| Thread standard | ISO 7-1 |
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