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Product Specifications:
| Item | Straight Flute Tap |
| 55% Thread Drill Size | 5.7 mm |
| 65% Thread Drill Size | 7/32" |
| 75% Thread Drill Size | 5.45 mm |
| Coolant Fed | Non Coolant Through |
| Extended Neck | Yes |
| Finish | Bright |
| Measurement System | Fractional Inch |
| Number Of Flutes | 4 |
| Overall Length | 2 1/2" |
| Primary Material Application | All Materials |
| Primary Material Application Iso Code | H, K, M, N, O, P, S |
| Secondary Material Application | Aluminum, Brass, Bronze, Cast Iron, Copper, Steel |
| Secondary Material Application Iso Code | K, N, P |
| Shank Dia. | 1/4" |
| Shank Length | 1 3/16" |
| Shank Type | Straight |
| Shank Type - Machining | Straight |
| Spiral Direction | Neutral |
| Square Size | 0.19" |
| System Of Measurement | Imperial |
| Tap Chamfer | Bottoming |
| Tap Finish | Bright |
| Tap Length Standard | ANSI |
| Tap Material | High Speed Steel |
| Tap Shank Standard | ANSI |
| Tap Style | Straight Flute (Hand) |
| Thread Direction | Left Hand |
| Thread Length | 13/16" |
| Thread Limit | H3 |
| Thread Limit/class Of Fit | H3 |
| Thread Size | 1/4"-28 |
| Thread Standard | Special |
| 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 |
Product Variants
| Product | Model | Thread Direction | Number Of Flutes | Overall Length | Thread Length | Thread Limit | 75% Thread Drill Size | Thread Size | Tap Finish | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
1650900 | Left Hand | 4 | 2 11/32" | 11/16" | H3 | #25 | #10-24 | Bright | €17.89 | |
![]() |
1651000 | Left Hand | 4 | 2 11/32" | 11/16" | H3 | #25 | #10-24 | Bright | €16.74 | |
![]() |
1594900 | Right Hand | 4 | 2 11/32" | 9/16" | H10 | #21 | #10-24 | Bright | €16.11 | |
![]() |
1024901 | Right Hand | 4 | 2 11/32" | 9/16" | H3 | #25 | #10-24 | Black Oxide | €14.95 | |
![]() |
1024900 | Right Hand | 4 | 2 11/32" | 9/16" | H3 | #25 | #10-24 | Bright | €14.36 | |
![]() |
1025000 | Right Hand | 4 | 2 11/32" | 9/16" | H3 | #25 | #10-24 | Bright | €14.36 | |
![]() |
1025001 | Right Hand | 4 | 2.344" | 9/16" | H3 | #25 | - | - | €14.20 |
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OSG 1660400 Straight Flute Tap, 1/4-28 Thread Size, 13/16 Inch Thread Length, 2 1/2 Inch Length
€19.49 /unit






