Spiral Point Tap Thread Size 1/4 In.-20 UNC Overall Length 3 1/8 in High Speed Steel THL Right Hand Thread Length 9/16 in 75 Percent Thread Drill Size #7 Thread Limit H4 H5 Class of Fit H3 Number of Flutes 3MRO428H18
| # | Attribute | Value |
|---|---|---|
| 1. | brand | WALTER PROTOTYP |

