Union Butterfield® 1010491 1578 4-40 UB STI PLUG H2 TAP BRT
STI [Screw Thread Insert] Taps
584199
MFG #: 1010491
Dormer Pramet
24.94000
/ ea
- Catalog Number: 1010491
- Finish: Bright
- Gross Weight Per Pack: 0.0100 lb
- Material: HSS
- Overall Length: 2 in
- Series: 1578
- Shank Diameter: 0.14099999999999999 in
- Size: #4-40
- Square Size: 0.11 in
- Standards: ANSI Specified
- Tap Drill Size: #43
- Thread Length: 11/16 in
- Type: Spiral Point
- UPC 11: 69846402132
- Stock Status: NONSTOCK
- Brand: Dormer Pramet
- Manufacturer: Dormer Pramet
- Chamfer Type: Plug
- Class of Fit: 2B/3B/H2
- Cutting Direction: Right Hand
- Measurement System: Imperial
- Number of Flutes: 2
- Thread Standard: UNC
- 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 hole |