Product Description
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 ⌀ A:
Pre-drill a plain hole without using a reamer.
Tapping hole ⌀ B:
Pre-drill a plain hole and then ream it using a 1:16 taper reamer. The taper bore ⌀ can then be checked laterally by reference to the Dmax check 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
