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Product Specifications:
| Item | Tap |
| Fits Class | Class 2B |
| Measurement System | Fractional Inch |
| Number Of Flutes | 4 |
| Shank Type | Straight |
| Shank Type - Machining | Straight |
| Spiral Direction | Neutral |
| System Of Measurement | Imperial |
| Tap Chamfer | Taper |
| Tap Material | High Carbon Steel |
| Tap Style | Straight Flute |
| Tap Type | Straight Flute |
| Thread Limit | 2B |
| Thread Limit/class Of Fit | 2B, 2B |
| Thread Size | 1/4"-28 |
| Thread Standard | Fine |
| Threads Per Inch | 28 |
Shipping Info:
| Ship weight (kg) | 0.01 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Product Variants
| Product | Model | Thread Size | 75% Thread Drill Size | Tap Chamfer | Thread Standard | Tap Type | 65% Thread Drill Size | 55% Thread Drill Size | Thread Limit | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
1354 | 5/16"-18 | 0.5708" | Taper | Fine | Straight Flute | 37/64" | 0.5826" | 2B | €22.78 | |
![]() |
1334 | 3/8"-16 | 5/16" | Taper | Coarse | Straight Flute | P | 0.3307" | 2B | €10.66 | |
![]() |
1031ZR | #10-32 | - | Taper | Fine | Straight Flute | - | - | 2B | €7.03 | |
![]() |
1032ZR | - | - | Taper | Coarse | Straight Flute | - | - | 2B | €7.17 | |
![]() |
1218ZR | #6-32 | - | Bottoming | Coarse | Straight Flute | - | - | 2B | €6.59 | |
![]() |
1224ZR | #8-32 | - | Bottoming | Coarse | Straight Flute | - | - | 2B | €6.66 | |
![]() |
1320ZR | 1/4"-20 | - | Taper | Coarse | Straight Flute | - | - | 2B | €6.99 |
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Contact us
Contact your account manager right away to get personal advice.
We're available Monday through Friday, from 07:30 until 17:00.
IRWIN INDUSTRIAL TOOLS 1323ZR Tap, 1/4-28 Thread Size, Taper, 4 Flutes
€7.24 /unit



