Spiral Flute Tap; 1/4″ - 28 ; 2-1/2″ OAL ; 3 FL ; P-HSS ; Hardslick ; H4 ; Series H8
| Thread Diameter Size (TDZ) | 1/4″ | Tool Type | Spiral Flute Tap |
| Threads per Inch (TPI) | 28 | Chamfer | 2P-3P |
| Thread Standard | UNF | Coating | HL |
| Overall Length (OAL) | 2-1/2″ | Shank Type | Square |
| Thread Cutting Part Length (THL) | 0.354″ | End Shape | Modified Bottoming |
| Usable Length (LU) | 1″ | Coolant Supply Property (CSP) | External |
| Connection Diameter Machine Side (DCONMS) | 0.255″ | Length Group | 2.5xD |
| Flute Count (NOF) | 3 | Square Size | 0.191″ |
| Flute Helix Angle (FHA) | 15 Degrees | Measurement Type | Inch |
| Cutting Edge Material | HSS | Tapping Prehole Diameter (Pre-hole) | 0.2175″ |
| Thread Tolerance Class (TCTR) | H4 | Series/List # | H8 |
| Standard | 302A | Thread Size | 1/4″ - 28 |
Product Features
| Country of Origin | S.Korea |
Shipping Info
Package Length
3.125
Package Width
0.5
Package Height
0.375
Package Weight
0.031
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