| Thread
Dia.
D1 | Pitch | Thread Form | Thread
Length
L2 | Overall
Length
OAL | Shank
Dia
D2 | Square
Sq | Tapping
Drill
Dia. |
| No.12 | 28 | UNF
Unified
National
Fine | 16mm | 80mm | 6mm | 4.9mm | 4.7mm |
Flute Type: Spiral Point
Recommended for: Through Holes
Shank Standard: DIN 371
Type: High speed steel cobalt (HSSE) tap.
Coating: None - Bright finish.
Tapping Materials
Excellent for tapping: Structural Steels; Plain Carbon Steel; Alloy Steels; Nodular Graphite; Long Chip Copper Alloy; Aluminium Si>10%.
Good for tapping: Unalloyed Titanium; Unalloyed Nickel; Unalloyed Copper and All forms of Aluminium
