Sutton M2222223 7/8"-14 UNF Bottoming Hand Tap - Straight Flute, TCA
Available
The Sutton M222 is a UNF (Unified National Fine) bottoming hand tap in 13 sizes, 1/4" to 1-1/4", with a straight flute and a square shank, made from Tungsten Chrome Alloy (TCA) and sold singly. A bottoming tap offers a continuous cutting edge with almost no taper and is usually used to cut threads to the bottom of a blind hole.
The square shank is designed for hard threading work in a variety of materials. Carbon taps are not suitable for precision, safety or critical threads. They are for general purpose and DIY use only. The straight flutes are designed for tapping into materials where chips break up readily and present no disposal problems, particularly in through-hole tapping. Straight flute taps are only suitable for hand operations, tapping up to 1-1/2 x diameter.
Where this product is used
- Routine maintenance, repair work and re-threading where high accuracy and tolerance thread is not critical.
- Tapping through holes in materials where chips break up readily.
- Unified National Special (UNS) thread: 1"-14 UNS.
- Applications include DIY, trade, automotive, plumbing, metalworking and MRO work.
Design features
- Tungsten Chrome Alloy (TCA): carbon taps for general purpose use.
- Square shank: for hard threading work in a variety of materials.
- Straight flutes: suited to through-hole tapping.
- Lead: A bottoming tap offers a continuous cutting edge with almost no taper and is usually used to cut threads to the bottom of a blind hole.
Sizes and item numbers
Tap drill is the drill size to use before tapping.
| Size | TPI | Thread series | Tap drill (mm) | Sutton item no. |
|---|---|---|---|---|
| 1/4" | 28 | UNF (Unified National Fine) | 5.5 | M222 0635 |
| 5/16" | 24 | UNF (Unified National Fine) | 6.9 | M222 0794 |
| 3/8" | 24 | UNF (Unified National Fine) | 8.5 | M222 0953 |
| 7/16" | 20 | UNF (Unified National Fine) | 9.8 | M222 1111 |
| 1/2" | 20 | UNF (Unified National Fine) | 11.5 | M222 1270 |
| 9/16" | 18 | UNF (Unified National Fine) | 12.8 | M222 1429 |
| 5/8" | 18 | UNF (Unified National Fine) | 14.5 | M222 1588 |
| 3/4" | 16 | UNF (Unified National Fine) | 17.5 | M222 1905 |
| 7/8" | 14 | UNF (Unified National Fine) | 20.5 | M222 2223 |
| 1" | 12 | UNF (Unified National Fine) | 23.5 | M222 2540 |
| 1" | 14 | UNS (Unified National Special) | 24 | M222 2541 |
| 1-1/8" | 12 | UNF (Unified National Fine) | 26.5 | M222 2858 |
| 1-1/4" | 12 | UNF (Unified National Fine) | 29.5 | M222 3175 |
Using the tap
- Drill the tap drill size shown in the size table for the thread you are cutting, then start the tap square to the hole.
- Turn the tap with a tap wrench on the square shank, backing off regularly to break the chip.
- Use a cutting fluid suited to the material being tapped.
- Use for hand tapping only, to a depth of up to 1-1/2 x the tap diameter.
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | M222 |
| Thread form | UNF (Unified National Fine) |
| Sizes | 13 sizes, 1/4" to 1-1/4" |
| Lead | Bottoming |
| Flute | Straight flute |
| Shank | Square shank |
| Material | Tungsten Chrome Alloy (TCA) |
| Maximum tapping depth | 1-1/2 x diameter (hand operation only) |
| Pack | Sold singly |
Related products
Related Sutton taps: M220 UNF taper hand taps, M221 UNF intermediate hand taps and M218 UNC bottoming hand taps. Browse threading tools and threading dies and sets, or Tap Magic cutting fluids.
Resources
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12 / 1
Model Number: M2222540
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12 / 1 1/8
Model Number: M2222858
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12 / 1 1/4
Model Number: M2223175
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14 / 1
Model Number: M2222541
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14 / 7/8
Model Number: M2222223
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16 / 3/4
Model Number: M2221905
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18 / 5/8
Model Number: M2221588
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18 / 9/16
Model Number: M2221429
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20 / 1/2
Model Number: M2221270
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20 / 7/16
Model Number: M2221111
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24 / 3/8
Model Number: M2220953
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24 / 5/16
Model Number: M2220794
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28 / 1/4
Model Number: M2220635
