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Product Specifications:
| Item | Spiral 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 |
| List Number | S108 |
| Material | High Speed Steel |
| Material Grade - Machining | Grade S108 |
| Measurement System | Fractional Inch |
| Number Of Flutes | 3 |
| Overall Length | 2 23/32" |
| Pitch Diameter Limits | H3 |
| Pitch Type | 28 |
| 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. | 5/16" |
| Shank Length | 1 37/64" |
| Shank Type - Machining | Straight |
| Square Size | 0.238" |
| Tap Chamfer | Bottoming |
| Tap Finish | Bright |
| Tap Material | High Speed Steel |
| Tap Style | Spiral Flute |
| Tap Thread Size | 1/4"-28 |
| Tap Type | Bottoming |
| Thread Direction | Right Hand |
| Thread Length | 1/2" |
| Thread Limit | H3 |
| Thread Size | 1/4"-28 |
| Thread Standard | Unf |
| Thread Type | Fine |
| Threads Per Inch | 28 |
Shipping Info:
| Ship weight (kg) | 0.02 |
| Ship height (cm) | 0.76 |
| Ship length (cm) | 7.62 |
| Ship width (cm) | 0.76 |
| HS code | 8207406000 |
Product Variants
| Product | Model | Thread Length | Number Of Flutes | Overall Length | Thread Size | 75% Thread Drill Size | Thread Limit | Shank Dia. | Tap Type | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
1009400 | 1 1/8" | 4 | 3 11/32" | 1/2"-13 | 27/64" | H10 | 23/64" | Bottoming | €47.78 | |
![]() |
1013800 | 7/16" | 3 | 2" | #6-32 | #34 | H2 | 9/64" | Bottoming | €14.95 | |
![]() |
1068400 | 1/2" | 2 | - | #8-32 | 3.4 mm | H2 | 5/32" | Plug | €18.26 | |
![]() |
1141400 | 7/8" | 4 | 2 29/32" | 3/8"-16 | 5/16" | H5 | 3/8" | Bottoming | €22.90 | |
![]() |
1146100 | 1 13/16" | 4 | 5 3/32" | 1"-8 | 22.25 mm | H6 | 51/64" | Plug | €206.62 | |
![]() |
1202400 | 7/16" | 2 | 2 3/32" | #6-32 | #36 | H1 | 9/64" | Plug | €22.01 | |
![]() |
1205700 | 7/16" | 2 | 1 3/4" | #2-56 | 1.73 mm | H2 | 9/64" | Bottoming | €46.97 |
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Contact us
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OSG 8012100 Spiral Flute Tap Bottoming 1/4 Inch x 28 Bright
€56.06 /unit


