1/2″x12 BSW thread ring gauge med GO&NOGO
1/2″ x 12 BSW thread plug gauge med GO&NOGO
- Fraction: 1/2“
- Decimal:0.5
- TPI:12
- Thread Form: BSW
Ring gauges class of fit: Close, Medium and free
Plug gauges class of fit: Medium and Normal
In stock, can be sent out the next day.(we just have med class in stock)
Each 1/2″ BSW gauge100% calibrated with quality assurance.
RH=right hand LH=left hand both available
- 1/2″ x 12 BSW screw plug gauge :taperlock double end with handle
- 1/2″ x 12 BSW screw ring gauge : solid
1/2″ BSW thread gauge calibration certificate
If needed, one long form calibration certificate from professional third party testing lab accredited to ISO/IEC 17025 can be supplied. gaugesools also can provide UKAS certifications if needed.These calibration certificates need extra cost, if clients need them,please tell in advance.
Custom production
If clients need some special 1/2″ x 12 BSW thread gauges, then our custom production service can
be provided.Usually plug gauges need ten days to finish, ring gages need two weeks to finish.
About us
gaugestools is a professional manufacturer and supplier of thread ring gages and thread plug gauges,including GO/NOGO, RH/LH(right hand and left hand).We have rich ranges of thread gauges, including UN, Metric, ACME, stub-ACME,BSPP, BSPT, NPT, NPTF, Trapezoidal, and Whitworth etc.
How to use 1/2″ BSW ring plug gauge
- GO of thread plug gage : it controls workpiece’s internal thread’s pitch diameter and major diameter’s maximum physical size. plug gage’s GO end should be screwed into the entire length of internal thread of workpiece, otherwise, the workpiece’s internal thread is unqualified.
- NOGO of thread plug gage: it controls workpiece’s internal thread’s single pitch diameter’s minimum physical size. plug gage’s NOGO can be screwed in, but it can’t be screwed in more than two turns. Otherwise, the interial thread is unqualified.
- GO of thread ring gage: it controls workpiece’s external thread’s pitch diameter and minor diameter’s maximum physical size. ring gage’s GO end should be screwed into the entire length of external thread of workpiece, otherwise, the workpiece’s external thread is unqualified.
- NOGO of thread ring gage: it controls workpiece’s external thread’s single pitch diameter’s minimum physical size.ring gage’s NOGO can be screwed in, but it can’t be screwed in more than two turns. Otherwise, the external thread is unqualified.
Worldwide shipment , usually taking 3-4 days clients can receive goods.
The pictures are just for reference. As too many items in stock, we haven’t taken pictures one by one,
If clients need actual goods’s pictures, we are happy to take.
Check the full range of Whitworth thread gauges in stock
Standard
Whitworth thread’s British standard: BS 84:2007
Whitworth thread’s thread gauges standard: BS 912-2:2007
| Diameter | TPI | Pitch | Height | Major Dia. | Pitch Dia. | Minor Dia. |
| 1/2 | 12 | 0.08333 | 0.0534 | 0.5000 | 0.4466 | 0.3932 |
1/2″ BSW’s basic size
