How to order special taps

We have a huge assortment of standard and special sizes including inch, metric and british sizes.

Did you know you can order special size taps manufactured in 24 hours?

 

Questions to ask

1 .Size ( outside diameter ) and pitch,
             Thread Form ( Inch, Metric, British, Pipe, Acme, Trapezoidal, etc)
2. Style ( taper, plug, bottoming, spiral pointed, spiral fluted)
             if unknown we quote the plug style

more info for specials

3. Right Hand ( standard ) or Left Hand
4. Single lead ( standard) or double, triple, or quad lead
5. Thru or blind hole
6  Depth of thread.
7. Material being tapped


Questions for Inch or American size taps

1.Size ( outside diameter ) and pitch,

UN, unified

  • UNC or NC is national coarse,
  • UNF or NF is national fine,
  • UNEF or NEF is national extra fine,
  • all others are UNS or NS national specials

2. Style ( taper, plug, bottoming, spiral pointed, spiral fluted)
           


3. Right Hand (this is standard) or Left Hand


 

Questions for ordering Acme taps

1. Diameter and Pitch ( thread per inch)

2. Through or blind hole

3. Length of Thread

4. Material being threaded

additional information

5. Right Hand ( this is standard) or Left hand

6. Single lead ( standard ) , double lead, triple lead, quad lead

7. Special class of fit


 

Questions for Trapezoidal tap ( metric acme taps)

1. Diameter and Pitch

2. Through or blind hole

3. Length of Thread

4. Material being threaded

additional information

5. Right Hand ( this is standard) or Left hand

6. Single lead ( standard ) , double lead, triple lead, quad lead

7. special class of fit


Questions for British taps

1.size ( outside diameter ) and pitch,

  • BSW ( British standard whitworth coarse thread)

  • BSF ( British standard whitworth fine thread)

  • pipe


2 style ( taper, plug, bottoming, spiral pointed, spiral fluted)
3. Right Hand (standard) or Left Hand


 

Questions for Pipe taps

1.size and pitch, ( the size of pipe taps is not the outside diameter, pipe sizes are named for the inside diameter of pipe )

2. Thread Form: Inch, ( American, 60 degree )
  • NPT, national pipe tapered thread
  • NPS, national pipe straight thread, ( parallel thread)

or British ( whitworth form, 55 degree)
  • BSP (BSP, BSPP, BSSPI, BSPF, BSPG, PS, R, G.), British standard pipe parallel thread (straight thread)
    BSPT ( BSPT, BSPTr, PT, KR, Rc ) British standard pipe tapered thread

3 Style. The standard style is bottoming ( taper, plug, bottoming, spiral pointed, spiral fluted)

4. Right Hand ( standard is RH ) or Left Hand

 

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