YAMAWA-ZELX Series | JSR GROUP

 

 

YAMAWA High Performance Taps for Aerospace Industry

The demands for tapping into heat resistant alloys and stainless steels are increasing rapidly in the Aerospace Industry.

The most common heat resistant alloys are Nickel base alloys, such as A286, Inconel, Hastelloy, Waspalloy, and Titanium alloys.

There are considerable difficulties in tapping these materials due to their material features which can easily cause severe damage to taps.

YAMAWA has the best line of taps for such severe tapping conditions.

Aerospace Taps Series

YAMAWA has assorted “ZELX series” taps for threading stainless steel, titanium alloys and nickel-based alloys that are used in many aircraft parts.

For through hole

 

ZELX SS

Spiral Pointed Taps for Stainless Steels

Suitable work materials
303 STAINLESS STEEL
304 STAINLESS STEEL
410 STAINLESS STEEL
8740 (SNCM240)
Size Ranges  
  • UNJC・・・No.4～1"
  • UNJF・・・No.4～1"
  

 

ZELX NI

Spiral Pointed Taps for Nickel Base Alloys

Suitable work materials

INCONEL 718, 750
Waspaloy
Hastelloy
A286
Size Ranges 15-5PH
  • UNJC・・・No.4～3/4"
  • UNJF・・・No.6～3/4"

 17-4PH (SUS630)
 

 

ZELX TI

Left Hand Spiral Fluted Taps for Titanium Alloys

Suitable work materials
Titanium alloys (Ti-6Al-4V)
 
 
 
Size Ranges  
  • UNJC・・・No.4～1/2"
  • UNJF・・・No.10～1/2"
  

 

For blind hole

 

ZELX SS

Spiral Pointed Taps for Stainless Steels

Suitable work materials
303 STAINLESS STEEL
304 STAINLESS STEEL
410 STAINLESS STEEL
8740 (SNCM240)
Size Ranges  
  • UNJC・・・No.4～1"
  • UNJF・・・No.4～1"
  

 

ZELX NI

Spiral Pointed Taps for Nickel Base Alloys

Suitable work materials

INCONEL 718, 750
Waspaloy
Hastelloy
A286
Size Ranges 15-5PH
  • UNJC・・・No.4～3/4"
  • UNJF・・・No.6～3/4"

 17-4PH (SUS630)

316 STAINLESS STEEL

 

ZELX TI

Left Hand Spiral Fluted Taps for Titanium Alloys

Suitable work materials
Titanium alloys (Ti-6Al-4V)
 
 
 
Size Ranges  
  • UNJC・・・No.4～1/2"
  • UNJF・・・No.10～1/2"
  

 

Ground Thread Tap Limits

In addition to the nominal size and pitch of a tap, there is another important dimensional factor to be considered in selecting a ground thread tap for a given job. This factor is the “H” and “L” pitch diameter tap limits. “H” represents (high) above basic pitch diameter; “L” (low) is below basic pitch diameter. Tap limits have been established to provide a choice in the selection of the tap size best suited to produce the class of thread desired. Figure 1 illustrates the numbering system and the .0005” diameter increment separation between successive limits. Since the starting point is basic pitch diameter, dividing the limit number by two establishes in thousandths of an inch, the amount the maximum tap pitch diameter is above basic in the “H” series and the amount the minimum tap pitch diameter is under basic in the “L” series.
Figure 2 illustrates the positioning of the tap limits in relation to the various classes of threads for a 1/4-20 size.

 

 

 

 
 
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