Sutton T691 5/8 x 11 TPI Spiral Flute Tap R50 Black Magic - PM-HSSE V3 - Hardlube
Available
The Sutton T691 is a spiral flute tap (R50 spiral, UNI designation, Black Magic range) for UNC threads, made from powder metallurgy, vanadium grade high speed steel (PM-HSSE V3) with a Hardlube (TiAlN + WC/C) coating. This listing covers 10 sizes from #2 x 56 TPI to 5/8 x 11 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 UNI designation is for normal, general purpose materials, with a normal rake angle and high thread relief, in powder metal high speed steel. The chamfer is Form C (2.5 x P), generally for blind holes.
The thread tolerance is 2BX. The tap is built to DIN 2184-1.
Where this product is used
- Universal high performance tapping.
- Use in stainless steels and high strength steels up to 850 N/mm2.
- Through holes up to 3 x d1.
- Suitable for synchronous tapping in machine operations.
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.
- Hardlube (TiAlN + WC/C) coating for tapping hard-to-machine materials, with minimum quantity lubrication (MQL) or dry machining, longer tool life and higher cutting speeds.
- 3 to 4 flutes, depending on size.
- 50° right-hand spiral flute.
- Form C chamfer, 2.5 x P.
- Thread tolerance 2BX.
- The UNI designation is for normal, general purpose materials, with a normal rake angle and high thread relief, in powder metal high speed steel.
- PM-HSSE V3 offers superior tool life.
- DIN 2184-1 construction.
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) | l3 (mm) | d2 shank (mm) | sq square (mm) | l4 square length (mm) | Flutes |
|---|---|---|---|---|---|---|---|---|---|---|
| T691 0218 | #2 x 56 TPI | 56 | 1.85 | 45 | 9 | 12 | 2.8 | 2.1 | 5 | 3 |
| T691 0284 | #4 x 40 TPI | 40 | 2.35 | 56 | 5 | 18 | 3.5 | 2.7 | 6 | 3 |
| T691 0351 | #6 x 32 TPI | 32 | 2.85 | 56 | 6 | 20 | 4 | 3 | 6 | 3 |
| T691 0417 | #8 x 32 TPI | 32 | 3.5 | 63 | 7 | 21 | 4.5 | 3.4 | 6 | 3 |
| T691 0483 | #10 x 24 TPI | 24 | 3.9 | 70 | 9 | 25 | 6 | 4.9 | 8 | 3 |
| T691 0635 | 1/4 x 20 TPI | 20 | 5.1 | 80 | 10 | 30 | 7 | 5.5 | 8 | 3 |
| T691 0794 | 5/16 x 18 TPI | 18 | 6.6 | 90 | 13 | 35 | 6 | 4.9 | 8 | 3 |
| T691 0953 | 3/8 x 16 TPI | 16 | 8 | 100 | 15 | 39 | 7 | 5.5 | 8 | 3 |
| T691 1270 | 1/2 x 13 TPI | 13 | 10.8 | 110 | 18 | - | 9 | 7 | 10 | 4 |
| T691 1588 | 5/8 x 11 TPI | 11 | 13.5 | 110 | 20 | - | 12 | 9 | 12 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T691 |
| Type | Spiral flute tap |
| Thread series | UNC |
| Material | PM-HSSE V3 |
| Finish | Hardlube |
| Designation | UNI |
| Spiral | R50 (50° right-hand) |
| Chamfer | Form C / 2.5 x P |
| Thread tolerance | 2BX |
| Standard | DIN 2184-1 |
| Flutes | 3 to 4 |
| Sizes in this listing | 10 sizes, #2 x 56 TPI to 5/8 x 11 TPI |
Related products
Related Sutton taps: T695 UNC Spiral Flute Tap R50 VA PM - PM-HSSE V3 - TiCN - DIN 2184-1, T667 UNC Spiral Flute Tap R15 H - PM-HSS Co - TiCN - DIN 2184-1, T427 UNC Spiral Flute Tap Bottoming - HSSE - TiN - ISO 529, T426 UNC Spiral Flute Tap Bottoming - HSSE - Steam Oxide - ISO 529, T425 UNC Spiral Flute Tap Bottoming - HSSE - Bright - ISO 529.
Couldn't load pickup availability
Secure Checkout. We do not store credit card details
Sutton T691 UNC Spiral Flute Tap R50 Black Magic - PM-HSSE V3 - Hardlube - DIN 2184-1: 11 / 5/8
SKU: A0015982 | Model: T6911588
TPI 11, Diameter (inch) 5/8. Features
The Sutton T691 is a spiral flute tap (R50 spiral, UNI designation, Black Magic range) for UNC threads, made from powder metallurgy, vanadium grade high speed steel (PM-HSSE V3) with a Hardlube (TiAlN + WC/C) coating. This listing covers 10 sizes from #2 x 56 TPI to 5/8 x 11 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 UNI designation is for normal, general purpose materials, with a normal rake angle and high thread relief, in powder metal high speed steel. The chamfer is Form C (2.5 x P), generally for blind holes.
The thread tolerance is 2BX. The tap is built to DIN 2184-1.
