| # of flutes, Number of Flutes | 3 |
| 55% Thread Drill Size | 11.80 mm, 11.80mm |
| 65% Thread Drill Size | 11.60 mm, 11.60mm |
| 75% Thread Drill Size | 11.40mm, 11.40 mm |
| brand | OSG |
| chamfer | 3.5P - 4.5P |
| Class of Fit | 6H |
| Coolant Fed | Non-Coolant Through |
| Drill Bit Size | 0.4480 in, 0.4513 in, 0.4545 in, 0.4578 in, 0.4610 in, 0.4480", 0.4513", 0.4545", 0.4578", 0.4610" |
| Extended Neck | Yes |
| interrupted | No |
| Item | Spiral Point Tap |
| list number, Series | 280 |
| Measurement System | Fractional Inch |
| neck length | 1.354 |
| Overall Length | 3-3/8" |
| Pitch Diameter Limit, Thread Limit, Thread Limit / Class of Fit | H3 |
| Primary Material Application | Steel |
| Primary Material Application ISO Code | P |
| Secondary Material Application | Cast Iron, Hardened Steel, Stainless Steel, Steel |
| Secondary Material Application ISO Code | H, K, M, P |
| Shank Dia. | 0.367" |
| Shank Length | 2.0160", 2 in |
| Shank Type - Machining | Straight |
| Spiral Direction | Neutral |
| square length | 0.437 |
| Square Size | 0.2740 in, 0.2740" |
| Standards | ANSI |
| Tap Chamfer | Plug |
| Tap Dimension Type | Inch |
| Tap Finish | Oxide, Black Oxide |
| Tap Grouping | Tap |
| Tap Material | High Speed Steel |
| Tap Size | 1/2" |
| Tap Style, tap style | Spiral Point |
| Tap Thread Size, Thread Size | 1/2"-20 |
| Tap Thread Type, Thread Standard, thread type | UNF |
| Thread Direction | Right Hand |
| Thread Length | 1-21/32" |
| Threads per Inch | 20 TPI |