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 Hand4. 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
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)
- 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