Machine tap HSS-E 3/4-14

Article no.: 138110 3/4-14
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  • Thread type: NPT
  • Flank angle: 60
  • Tool material: HSS E
  • Standard: DIN 374
  • Thread standard: ANSI B 1.20.1

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Product details

Technical Data

Thread size 3/4-14 NPT
Coating TiAlN
Thread type NPT
Flank angle 60 degrees
Tool material HSS E
Standard DIN 374
Thread standard ANSI B 1.20.1
Taper lead form C
Taper ratio 1:16
Shank Plain shank with h9
Through-coolant no
Application for type of drilling Blind hole; Through hole
Cutting direction right-hand
Thread pitch 1.814 mm
Threads per inch 14
Overall length L 150 mm
Shank ⌀ Ds 20 mm
Shank square □ 16 mm
Tapping hole ⌀ A 23.3 mm
Tapping hole ⌀ B 22.7 mm
Thread gauge ⌀ Dmax + 0.05 23.67 mm
Tapping hole minimum depth 23 mm
Thread ⌀ 26.568 mm
Type of threading tool Machine tap for conventional machining
Number of clamping slots 5
Colour ring blue
Number of cutting edges Z 5
Thread depth 46.4 mm
Type of product Tap

Identification numbers & Classifications

Article number 138110 3/4-14
EAN / GTIN 4045197533708
Manufacturer number 138110 3/4-14

Application Table

Alu plastics
N
13
Aluminium (short chipping)
N
18
Steel < 500 N/mm²
P
17
Steel < 750 N/mm²
P
15
Steel < 900 N/mm²
P
12
INOX < 900 N/mm²
M
5
GG(G)
K
14
CuZn
N
16
Oil
 
wet maximum
 

Description

Version:

A special TiAlN coating for long tool life. Due to interrupted guide thread: reduced tapping torque and improved distribution of lubricant. For use with emulsion (fat content minimum 8%).

Application:

Tapered pipe threads (NPT) to ANSI B1.20.1, for threads with sealants. See the table for the specified minimum size of the tapping hole.

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 (see No. 162650). The taper bore ⌀ can then be checked laterally by reference to the Dmax check dimension (see table). Variant B for drilling the tapping hole offers the best process reliability for the tapping operation.

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