| Thread
Dia.
D1 | Pitch | Thread Form | Thread
Length
L2 | Overall
Length
OAL | Shank
Dia
D2 | Square
Sq | Tapping
Drill
Dia. |
| 1/4 | 28 | UNF
Unified
National
Fine | 17mm | 80mm | 7mm | 5.5mm | 5.5mm |
Flute Type: Spiral Point
Recommended for: Through Holes
Shank Standard: DIN 371
Type: High speed steel cobalt (HSSE) tap.
Coating: None - Bright Finish - Uncoated for excellent results in softer materials.
Tapping Materials
Excellent for tapping: All General Steels; All Cast Irons & Nodular Graphite; Unalloyed Titanium; Unalloyed Nickel; and All forms of Aluminium Si<10%.
Good for tapping: Alloy Steels; All Stainless Steels; some Nickel & Titanium Alloys.
| For speeds please click the "Specifications" tab above. |
