TPS UNC-5/16-18-M HEST
HSS spiral flute machine taps unified coarse threads, for a wide range of materials.


Thread Diameter Size (TDZ) | 5/16″ | Coating | Steam tempered |
Thread Pitch (TP) | 1.389 mm | Flute Type | Spiral |
Threads per Inch (TPI) | 18 Threads/" | Style | DIN 371 |
Thread Standard | THFT | | fmax | 3 |
Overall Length (OAL) | 3.543″ | Measurement Type | Inch |
Thread Cutting Part Length (THL) | 0.551″ | Grade | HEST |
Usable Length (LU) | 1.38″ | d max | 5/16″" |
Connection Diameter Machine Side (DCONMS) | 0.315″ | ToolTypeName | Machine Blind Hole Taps |
Flute Count (NOF) | 3 | L125 | 3.543″ |
Flute Helix Angle (FHA) | 40 Degrees | Thread Form Type (THFT) | UN60 |
Cutting Edge Material | HSS | Series/List # | 299 |
Thread Tolerance Class (TCTR) | D6 | Application | | Deep Hole with Short Thread | Taps for Deep Blind Hole | Taps for Short Blind Hole | |
Standard | DIN 371 | Body Material | HSS |
Tool Type | Machine Blind Hole Taps | Drive Size (DRVS) | 0.244″ |
Chamfer | 2.5P-3P | Thread Size | 5/16 - 18 |






Product Features
Family Description | HSS spiral flute machine taps unified coarse threads, for a wide range of materials. | Country of Origin | Korea |
Shipping Info
Package Weight
0.134
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