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Product Specifications:
| Item | Tap |
| 55% Thread Drill Size | 5.7 mm |
| 65% Thread Drill Size | 7/32" |
| Coolant Fed | Non Coolant Through |
| Extended Neck | Yes |
| Features | High Performance, STI Tap For Aluminum |
| Finish | Bright |
| Grade | Grade 13039 |
| Material Grade - Machining | Grade 13039 |
| Measurement System | Fractional Inch |
| Number Of Flutes | 2 |
| Overall Length | 2 23/32" |
| Primary Material Application | Aluminum |
| Primary Material Application Iso Code | N |
| Shank Dia. | 5/16" |
| Shank Length | 1 19/32" |
| Shank Type | Straight |
| Shank Type - Machining | Straight |
| Square Size | 0.238" |
| System Of Measurement | Imperial |
| Tap Chamfer | Modified Bottoming |
| Tap Finish | Bright |
| Tap Material | High Speed Steel |
| Tap Style | Spiral Flute |
| Tap Thread Size | 1/4"-28 |
| Tap Type | Spiral Flute |
| Thread Direction | Right Hand |
| Thread Length | 1/2" |
| Thread Limit | H3 |
| Thread Size | 1/4"-28 |
| Thread Standard | Fine |
| Threads Per Inch | 28 |
Shipping Info:
| Ship weight (kg) | 0.02 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
Product Variants
| Product | Model | Thread Size | Tap Finish | Thread Length | Overall Length | Thread Limit | 75% Thread Drill Size | Number Of Flutes | Shank Dia. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
31520508 | #10-32 | TiCN | 1" | 2 1/2" | H3 | #21 | 3 | 1/4" | €130.97 | |
![]() |
31540508 | #10-32 | TiCN | 1" | 2 1/2" | H3 | #21 | 3 | 1/4" | €114.40 | |
![]() |
1303900500 | #10-32 | Bright | 13/32" | 2 1/2" | H2 | #21 | 2 | 1/4" | €74.94 | |
![]() |
1303900508 | #10-32 | TiCN | 13/32" | 2 1/2" | H2 | #21 | 2 | 1/4" | €83.07 | |
![]() |
1303900108 | #2-56 | TiCN | 11/64" | 1 7/8" | H2 | 1.73 mm | 2 | 1/8" | €94.04 | |
![]() |
31520108 | #2-56 | TiCN | 35/64" | 1 7/8" | H2 | 1.73 mm | 3 | 1/8" | €205.89 | |
![]() |
31540108 | #2-56 | TiCN | 9/16" | 1 15/16" | H2 | 1.73 mm | 3 | 1/8" | €205.89 |
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Contact us
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OSG 1303900700 Sti Tap, 1/4-28 Thread Size, 1/2 Inch Thread Length, 2 23/32 Inch Length
€74.93 /unit


