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Product Specifications:
| Item | Straight Flute Tap |
| 55% Thread Drill Size | 8.4 mm |
| 65% Thread Drill Size | P |
| 75% Thread Drill Size | 5/16" |
| Class Of Fit | Class 2B-3B |
| Extended Neck | Yes |
| Measurement System | Fractional Inch |
| No. Of Flutes | 4 |
| Overall Length | 2 15/16" |
| Primary Material Application | Cast Iron, Hardened Steel |
| Primary Material Application Iso Code | H, K |
| Shank Dia. | 3/8" |
| Shank Length | 1 11/16" |
| Shank Type-machining | Straight |
| Spiral Direction | Neutral |
| Square Size | 0.286" |
| Standards | Uscti Table 302A |
| System Of Measurement | Imperial |
| Tap Chamfer | Semi Bottoming |
| Tap Finish | Black Oxide |
| Tap Length Standard | USCTI |
| Tap Material | Cobalt |
| Tap Shank Standard | USCTI |
| Tap Style | Straight Flute Hand |
| Thread Direction | Right Hand |
| Thread Length | 3/4" |
| Thread Limit | H5 |
| Thread Limit/class Of Fit | H5, 2B-3B |
| Thread Size | 3/8"-16 |
| Thread Standard | Coarse |
| Threads Per Inch | 16 |
Shipping Info:
| Ship height (cm) | 1.2 |
| Ship length (cm) | 9.8 |
| Ship width (cm) | 1.5 |
| Country of Origin | US |
Product Variants
| Product | Model | Overall Length | Shank Dia. | Thread Standard | Tap Material | Tap Finish | Tap Style | Thread Direction | Primary Material Application | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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330269 | 3 3/8" | 23/64" | Coarse | Cobalt | Black Oxide | Straight Flute Hand | Right Hand | Cast Iron, Hardened Steel | €51.54 | |
![]() |
330283 | 3 3/8" | 23/64" | Coarse | Cobalt | Black Oxide | Straight Flute Hand | Right Hand | Cast Iron, Hardened Steel | €59.61 | |
![]() |
330284 | 3 3/8" | 23/64" | Fine | Cobalt | Black Oxide | Straight Flute Hand | Right Hand | Cast Iron, Hardened Steel | €56.50 | |
![]() |
330278 | 2 1/2" | 1/4" | Coarse | Cobalt | Black Oxide | Straight Flute Hand | Right Hand | Cast Iron, Hardened Steel | €31.09 | |
![]() |
300216 | 2 1/2" | 1/4" | Coarse | Cobalt | TiCN | Straight Flute Hand | Right Hand | Cast Iron, Hardened Steel | €43.99 | |
![]() |
330279 | 2 23/32" | 5/16" | Coarse | Cobalt | Black Oxide | Straight Flute Hand | Right Hand | Cast Iron, Hardened Steel | €32.87 | |
![]() |
300217 | 2 23/32" | 5/16" | Coarse | Powdered Metal | TiCN | Straight Flute Hand | Right Hand | Cast Iron, Hardened Steel | €49.49 |
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GREENFIELD THREADING 330280 HTHM Straight Flute Tap, 3/8-16 Thread Size, 3/4 Inch Thread Length, Semi-Bottom
€33.92 /unit


