Description
HOLEX Clever Tap machine tap for tapered NPT pipe threads.
Sturdy tap for conventional standard applications.
High-quality HSS-E tool material and geometry for steels.
Bronze-coloured tempered thread profile.

Product Data
Product type: Machine tap for tapered pipe threads
Series: Clever Tap
Thread type: NPT tapered pipe thread
Standard: ANSI B1.20.1
Taper: 1:16
Tool material: HSS-E
Thread size: 1/4-18
Threads per inch: 18
L: 100 mm
Dia. Ds: 11 mm
Square size: 9 mm
Tapping hole Dia. A: 11.1 mm
Tapping hole Dia. B: 10.75 mm
Thread gauge Dia. Dmax +0.05: 11.36 mm
Tapping hole minimum depth: 17.5 mm

Cutting Data
Alu: 13
Alu cast >10% Si: 13
Steel <500 N: 12
Steel <750 N: 12
Steel <900 N: 6

Application
Tapered pipe threads NPT to ANSI B1.20.1 for threads with sealants.

Recommendation
Variant A: pre-drill a plain hole without using a reamer.
Variant B: pre-drill a plain hole and ream using a 1:16 taper reamer No. 162650.