A Brand A-CHT 1/4-28 H4 3 Flute 1.5P Carbide Straight Flute Tap
OSG A Brand A-CHT straight flute taps are advanced-performance carbide coolant-through taps for cast iron and aluminum alloys. The large oil-hole design supports excellent coolant flow, while ultra-fine grain carbide provides high wear resistance and toughness.
| Thread Size | 1/4-28 |
| Thread Type | UNF |
| Thread Pitch | 28 TPI |
| Class of Fit | 3B, 2B |
| Thread Limit | H4 |
| Chamfer Type | Bottom (1.5P) |
| Chamfer Length | 0.054 in (1.361 mm) |
| Major Diameter | 0.250 in (6.350 mm) |
| Thread Length | 0.598 in (15.189 mm) |
| Tap Drill Size Range | 0.211 in (5.359 mm) - 0.220 in (5.588 mm) |
| Overall Length | 3.150 in (80.010 mm) |
| Shank Diameter | 0.255 in (6.477 mm) |
| Square Length | 0.312 in (7.938 mm) |
| Square Width | 0.191 in (4.851 mm) |
| Substrate | Carbide |
| Surface Treatment | Bright |
| Coolant Thru | Yes |
| Number of Flutes | 3 |
| Cutting Direction | RH |
| Helix Angle | 0 Degrees |
| Interrupted Thread | No |
| List Number | 16615 |
| Country of Origin | JPN |
| Net Product Weight | 0.065 lb |
A Brand A-CHT 1/4-28 H4 3 Flute 1.5P Carbide Straight Flute Tap
Sale price$206.86
Tooling Overview
| Cast Iron | Best |
| Aluminum Casting | Best |
| Thread Size | 1/4-28 |
| Thread Type | UNF |
| Thread Pitch | 28 TPI |
| Class of Fit | 3B, 2B |
| Thread Limit | H4 |
| Chamfer Type | Bottom (1.5P) |
| Chamfer Length | 0.054 in (1.361 mm) |
| Major Diameter | 0.250 in (6.350 mm) |
| Thread Length | 0.598 in (15.189 mm) |
| Tap Drill Size Range | 0.211 in (5.359 mm) - 0.220 in (5.588 mm) |
| Overall Length | 3.150 in (80.010 mm) |
| Shank Diameter | 0.255 in (6.477 mm) |
| Square Length | 0.312 in (7.938 mm) |
| Square Width | 0.191 in (4.851 mm) |
| Substrate | Carbide |
| Surface Treatment | Bright |
| Coolant Thru | Yes |
| Number of Flutes | 3 |
| Cutting Direction | RH |
| Helix Angle | 0 Degrees |
| Interrupted Thread | No |
| List Number | 16615 |
| Country of Origin | JPN |
| Net Product Weight | 0.065 lb |
