The VÖLKEL machine tap according to JIS B-4430 in Form C 35° Spiral Flute, manufactured from HSS-G (ground high speed steel), is ideal for producing precise taper pipe threads Rc (BSPT). With a 1:16 taper and 55° flank angle, it ensures a secure, self-sealing fit. The Form C 35° Spiral Flute design makes it particularly suitable for blind holes and allows use in both manual and machine tapping.
This machine tap is designed for the following applications:
Q1: What is the difference between Rc and R threads?
A1: Rc refers to 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 C 35° Spiral Flute mean?
A2: The Form C 35° Spiral Flute design optimizes chip evacuation, especially in blind holes, ensuring cleaner and more reliable threading.
Q3: What are the benefits of HSS-G?
A3: HSS-G (ground high speed steel) offers high accuracy, extended tool life, and smoother thread surfaces.
Q4: Which materials can this tap be used on?
A4: Suitable for non-abrasive materials up to 900 N/mm², particularly unalloyed and low alloy steels.
Q5: Can this tap be used manually and with machines?
A5: Yes, it is designed for universal use in both hand and machine tapping, provided proper clamping and lubrication are applied.
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 C |
| 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 | 4022835977025 |
| Item number | 97702 |
| Type of flute | 35° Spiral Flute |
| Application | for blind holes |
| Thread standard | ISO 7-1 |
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