Union Butterfield® 1010456 1572 1/4-28 UB STI BOTT HAND TAP BRT
STI [Screw Thread Insert] Taps
548777
MFG #: 1010456
Dormer Pramet
25.32000
/ ea
- Catalog Number: 1010456
- Country of Origin: US
- Finish: Bright
- Gross Weight Per Pack: 0.0500 lb
- Material: HSS
- Overall Length: 2-23/32 in
- Series: 1572
- Shank Diameter: 0.318 in
- Size: 1/4-28
- Square Size: 0.238 in
- Standards: ANSI Specified
- Tap Drill Size: #3
- Thread Length: 1-1/8 in
- Type: Straight Flute
- UPC 11: 69846402113
- Stock Status: NONSTOCK
- Brand: Dormer Pramet
- Manufacturer: Dormer Pramet
- Chamfer Type: Bottoming
- Class of Fit: 3B/H3
- Cutting Direction: Right Hand
- Measurement System: Imperial
- Number of Flutes: 3
- Thread Standard: UNF
- Features
| Designed for use in aluminum, magnesium, and other nonferrous materials where taps of this type are most commonly used |
| Taps suitable for other materials can be furnished on request |
| STI taps are dimensionally oversize and utilize a larger tap drill size so that the thread they produce will accept a helical coil wire screw thread insert of the same nominal size and pitch |
| For a particular size and pitch the lower H-Limit number is suggested for class 2B and 3B threads, while the higher H-Limit is suggested for class 2B |
| Through or blind hole |