Sutton T351 G 1/4 x 19 TPI Spiral Flute Tap R50 VA PM - PM-HSSE V3 - Steam Oxide
Available
The Sutton T351 is a spiral flute tap (R50 spiral, VA PM designation) for BSPF (G) threads, made from powder metallurgy, vanadium grade high speed steel (PM-HSSE V3) with a blue steam-oxide finish. This listing covers one size: G 1/4 x 19 TPI.
The 50° right-hand spiral flute suits blind holes in long chipping materials: the high helix angle curls the chips and transports them back out of the hole. The tap cuts on reversal, so the flutes have rake on both front and back faces. The VA PM designation is for stainless and tough steels, with the VA geometry in powder metal high speed steel. The chamfer is Form C (2.5 x P), generally for blind holes.
The thread standard is ISO 228. The tap is built to DIN 5156: reduced shank with square drive.
Where this product is used
- Use in stainless steels and high strength steels up to 1000 N/mm2.
- Blind holes.
- Suitable for machine operations.
- Depths up to approximately 3 x d1.
Design features
- Powder metallurgy, vanadium grade high speed steel (PM-HSSE V3). The very fine and uniform grain structure allows high hardness while keeping good toughness, for materials up to 40 HRC and difficult-to-machine materials such as stainless steels.
- Blue steam-oxide finish for ferrous metals; it helps prevent chip build-up on the cutting edges and carries lubricant well.
- 4 flutes.
- 50° right-hand spiral flute.
- Form C chamfer, 2.5 x P.
- Thread standard ISO 228.
- The VA PM designation is for stainless and tough steels, with the VA geometry in powder metal high speed steel.
- PM-HSSE V3 offers higher edge hardness than standard VA series.
- DIN 5156 construction, reduced shank with square drive.
Sizes
Dimensions are in millimetres. Item numbers are the Sutton catalogue numbers. If you are not sure which tapping drill to use, try our tap drill size selector.
| Item no. | Thread size | TPI | Tapping drill (mm) | l1 overall (mm) | l2 thread (mm) | d2 shank (mm) | sq square (mm) | l4 square length (mm) | Flutes |
|---|---|---|---|---|---|---|---|---|---|
| T351 1316 | G 1/4 x 19 TPI | 19 | 11.8 | 100 | 22 | 11 | 9 | 12 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T351 |
| Type | Spiral flute tap |
| Thread series | BSPF (G) |
| Material | PM-HSSE V3 |
| Finish | Steam Oxide |
| Designation | VA PM |
| Spiral | R50 (50° right-hand) |
| Chamfer | Form C / 2.5 x P |
| Thread standard | ISO 228 |
| Standard | DIN 5156 |
| Flutes | 4 |
| Sizes in this listing | G 1/4 x 19 TPI |
Related products
Related Sutton taps: T352 BSPF (G) Spiral Flute Tap R50 VA PM - PM-HSSE V3 - TiCN - DIN 5156, T285 BSPF (G) Spiral Flute Tap R45 VA - HSSE - TiCN - DIN 5156, T284 BSPF (G) Spiral Flute Tap R45 VA - HSSE - Steam Oxide - DIN 5156, T282 BSPF (G) Spiral Flute Tap R40 - HSSE - Steam Oxide - DIN 5156, T281 BSPF (G) Spiral Flute Tap R40 - HSSE - Bright - DIN 5156.
Couldn't load pickup availability
Secure Checkout. We do not store credit card details
