Holex NPT HSS-E Uncoated Machine Tap

This Holex Through and Blind Hole German Machine Tap is an uncoated, sturdy through and blind hole machine tap with straight flutes.

Applications:
Tapered pipe threads (NPT) to ANSI B1.20.1, for threads with sealants. 

Recommendation:

Tapping hole diameter A:
Pre-drill a plain hole without using a reamer.
Tapping hole diameter B:
Pre-drill a plain hole and then ream it using a 1:16 taper reamer. The taper bore diameter can then be checked laterally by reference to the D_maxcheck dimension. Variant B for drilling the tapping hole offers the best process reliability for the tapping operation.

Technical Data:

Coating: Uncoated Thread type: NPT Flank angle: 60 degrees Tool material: HSS E Thread standard: ANSI B 1.20.1 Taper lead form: C Taper ratio: 1:16 Helix angle: 15 degrees Shaft: Plain shank with h9 Through-coolant: No Application for type of drilling: For blind holes and through holes Cutting direction: Right-hand Type of threading tool: Machine tap for conventional machining Color ring: None