- 美国GSG美标管螺纹量规
- 美国GSG石油螺纹规│GSG牙形板
- 美国GSG美标ASME螺纹规
- 美国GSG精密量规│进口量仪
- 美国GSG螺纹指示规│螺纹量仪
- 美国GSG倒角量规│锪孔量规
- 瑞士Trimos测高仪│Trimos测长机
- Hexagon影像仪│海克斯康三坐标
- 苏州Mitutoyo日本三丰量具
- Fischer菲希尔涂层测厚仪
- Elcometer易高涂层测厚仪
- GE超声波探伤仪
- 奥林巴斯超声波探伤仪
- GBIS超声波探头
- Bruker布鲁克光谱仪
- 赛普斯SCIAPS光谱仪
- Western Instrument仪器
- G.A.L. Gage焊接量规
- Clark硬度计│Sun-Tec
- 日本future-tech硬度计
- King便携式布氏硬度计
- Rex Gauge邵氏硬度计
- Ames便携式洛氏硬度计
- Hemco Gage螺纹规
- PMC Lone Star石油量规
- Vermont螺纹规│VTG螺纹规
- GageAssembly螺纹规
- Threadmaster进口螺纹规
- WESTport Corporation
- Threadcheck螺纹规│三线规
- Mueller Gage沟槽量仪
- Kroeplin精密卡规
- 美国环球Universal Punch
- 德国Schwenk进口内径量仪
- Allen Gauge and Tool
- Fowler High Precision
- Swiss Precision Instruments
- Flexbar Machine Corporation
- Acem螺纹规│Stub Acme螺纹规
- 苏州工量具│测量仪器
- Wrentham Tool Group
- Meyer Gage针规、梅尔量规
- ASKER橡胶硬度计
- NAKANISHI高速主轴
- OJIYAS螺纹规│OJIYAS气动量仪
- Microset 复制胶
- DeFelsko涂层测厚仪
- OSG丝锥│OSG螺纹规
- Western Gage 气动量仪检具
- Michigan Spline Gage Co
- Southwest Calibration Service
- McCord and Company
- Pennoyer-Dodge Company
- Pi Tape Texas, LLC
- BARCOR INC.
- Advanced Systems and Designs
- Calmetrics Inc
BSW and BSF Thread Gauges
Gauges for testing parallel threads having a full form Whitworth profile are manufactured to BS 84: 2007 and BS 919: Part 2: 2007.
BS 84 specifies basic information for the Whitworth form, and tabulates diameters for threads designated BSW and BSF.
BSW is a coarse thread series from 1/8" to 6" diameter.
BSF is a fine thread series from 3/16" to 3" diameter.
- Basic Form Whitworth Thread
- H = 0.960491p
- h=2/3H= 0.640327p
- H/6 = 0.160082p
- r = 0.137329p
Provision is made for three classes of fit for external threads. Close, Medium and Free and two classes for internal threads; Medium and Normal.
Close class applies to threads requiring a snug fit and is only used where there is a controlled accuracy of form and pitch. Medium class applies to better class interchangeable threads. Free and Normal classes apply to the majority of commercial quality threads.
Unless otherwise specified by the customer, gauges for all internal and external product threads are made to the basic sizes as specified in BS 84, with the exception of Medium and Free fit bolts up to and including 3/4” diameter. These have a plating allowance, the magnitude of which is dependant on diameter and pitch.
BS919: Pt 2: 2007 specifies the limits for gauges with threads having a full form profile.
The gauge limits are dependant upon the diameter/pitch. Generally, the larger the diameter, the larger the limit within defined bands.
The types of gauge which are recommended to be used are similar to those used for ISO and Unified threads, with the exception that the Go plugs and Go rings test the major, effective and minor diameters of the product threads (Maximum material limit). The No Go gauges test the effective diameter only.