The VÖLKEL Short Machine Tap made of HSS-G is designed for cutting precise Whitworth threads (BSW) according to BS 84 in size 5/16" x 18 TPI. Suitable for hand and machine use, it performs reliably in non-abrasive materials up to 900 N/mm² and can be used for through and blind holes.
BSW (British Standard Whitworth) is a 55° flank angle thread standard defined in BS 84. BSW 5/16" x 18 means 5/16 inch nominal diameter with 18 threads per inch.
Form D (DIN 352) refers to a medium chamfer used universally for both through and blind holes, offering a balanced cutting action and good chip flow.
Medium tolerance corresponds to the standard internal thread fit, providing smooth assembly with standard BSW screws.
| Thread type | Whitworth thread BSW (BS 84) |
| Standard | DIN 352 |
| Form | Form D (medium chamfer) |
| Material | HSS-G |
| Nominal size | BSW 5/16" x 18 TPI |
| Overall length (L1) | 56 mm |
| Thread length (L2) | 22 mm |
| Shank diameter (D2) | 6 mm |
| Square drive | 4.9 mm |
| EAN | 4022835623168 |
| Article number | 62316 |
Is it suitable for stainless steel?
Primarily designed for non-abrasive, machinable materials. For stainless or hard steels, use HSS-E or HSCo taps.
Can it be used in a drill press?
Yes, when used with a proper collet or tap holder, correct speeds, and lubrication.
Where can I find the tapping drill size?
Refer to the Tapping Drill Size Chart (PDF) .
Are pre- or finish taps required?
No, this single-cut tap can be used directly for full threading.
How to detect wear?
Increased cutting force, rough thread surfaces, or burr formation indicate resharpening or replacement is needed.
Need help choosing the right tap or size? Contact us via the contact form.
| Type of thread | Whitworth-Thread |
|---|---|
| Standard | DIN 352 |
| Form | Form D |
| Material | HSS-G |
| Tolerance | medium |
| Size | BSW 5/16 x 18 |
| Overall length (L1) | 56 mm |
| Thread length (L2) | 22 mm |
| Core hole diameter (D1) | 6.5 mm |
| Shank diameter (D2) | 6.0 mm |
| Drive connector | 4.9 mm |
| EAN | 4022835623168 |
| Item number | 62316 |
| Type of flute | straight fluted |
| Application | for through holes |
| Thread standard | BS 84 |
Be the first to review “Short Machine Tap DIN 352 Form D HSS-G - BSW 5/16 x 18”
