THREAD GAUGES

Thread and thread gauge technology is a minefield to the uninitiated! Wessex Metrology is an acknowledged leader in the supply of screw thread gauges. We deliver a comprehensive range of standard sizes from stock, including metric M2 to M100, Tr, UNC, UNF, G, BSW, NPT, R-series and of course can advise on non-standard classes of fit, special thread forms and special designs on short lead times.

We represent Europe’s largest manufacturer of precision gauges; substantial investment in plant, equipment and measuring technology over a period of many years enables them to deliver gauges of the highest quality at very competitive prices.

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THREAD AND PLAIN GAUGE TERMINOLOGY

Metric ISO-thread ISO 965

Gauge dimensions ISO1502


Thread-gauges
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BSW and BSF threads BS 84

Gauge dimensions BS919


Cylindrical pipe threads DIN ISO228 Part1

Gauge dimensions DIN ISO 228 Part 2


ISO metric trapezoidal threads DIN 103
Tolerance zones group N (normal)

Gauge dimensions DIN 103 Part 9


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Round thread DIN 405-1, 405-2
Tolerance zones group N (normal)

Gauge dimensions DIN 405-3


Unified inch screw threads BS1580
Tolerance zones group N (normal)

Gauge dimensions BS 919

THREADED COMPONENTS

ISO, UN Threads – BS3643, BS1580


Withworth Threads and G- Series BS84, BS2779


Trapezoidal – BS5436

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Round Thread – DIN405

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Metric Butress

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Butress – BS165X

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MJ and UNJ Threads BS6293, BS4084

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PLAIN PLUGS AND RINGS

The ubiqutous Go/NoGo gauging system is the simplest and often most effective way of checking hole and shaft sizes. Available as:

  • Plain cylindrical plug and ring gauges: 0.2mm to 250mm
  • Setting rings: 1.5mm to 200mm, Class XX and Class X

We offer two levels of service : Standard Delivery within 3-4 weeks and FastTrak for urgent jobs.

UKAS Certificates are available with all these gauges.

All gauges are supplied in through-hardened toolsteel and some products are available in ceramic or tungsten carbide.

PLAIN DIAMETERS

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Gauge Tolerance disposition – Plug Gauges

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Gauge Tolerance disposition – Ring Gauges


This diagram shows the relationship between product tolerancing and gauge tolerancing. The practice in the UK is to apply tolerances in accordance with BS969:1982 but we can of course supply to other national and international standards.

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TAPER GAUGES

Manufactured to national and ISO standards these are supplied in Toolsteel or Hardchrome.

  • Taper plug and ring gauges
  • Machine taper, morse taper
  • Luer taper

We offer two levels of service : Standard Delivery within 3-4 weeks and FastTrak for urgent jobs.

UKAS Certificates are available with all these gauges.

SQUARE, HEXAGONAL AND SPHERICAL GAUGES

These gauges are custom built. Send us your design documentation or specifications and we can assess the optimum gauges for your application.

  • Taper plug and ring gauges
  • Square, hexagonal and spherical gauges
  • Thread depth gauges
  • Bevelled straight edges and squares
  • Sine bars, X-Y tables
  • UKAS Certificates are available with all these products
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PRECISION PIN SETS

Pin sets are available in a variety of standard configurations and increments, usually supplied in special boxes to protect your investment. Special sets can be made up to your requirements.

Boxed sets of pins 0.1mm to 20mm diameter, tolerances from 0.5 micron.

All pins are through hardened toolsteel, precision lapped to either unilateral or bilateral tolerances. Pins can also be supplied in ceramic or tungsten carbide.

UKAS Certificates are available with all these gauges.


 

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德标量规包括如下标准

  • GO Plain ring gauges acc. to DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M, NF E 02-202
  • NO GO ring gauges acc. to DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M, NF E 02-202
  • Master rings acc. to DIN 2250-1, BS 4064, BS 4065, ANSI/ASME B89.1.6M, NF E 11-011
  • GO plain plug gauges acc. to DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M, NF E 02-202
  • NO GO plain plugs acc. to DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M, NF E 02-202
  • GO/NO GO plain plug gauges acc. to DIN 7150-2:2007, BS 269:1982, ANSI/ASME B89.1.6M
  • GO plain snap gauges acc. to DIN 7150-2:2007
  • NO GO plain snap gauges acc. to DIN 7150-2:2007
  • GO/NO GO (double sided) plain snap gauges acc. to DIN 7150-2:2007
  • Master setting disks (Style 1, 2 and 3) acc. to ANSI/ASME B89.1.6M
  • Rod gauges with spherical ends acc. to DIN 7150-2:2007
  • Check plugs for snap gauges acc. to DIN 7150-2:2007
  • Setting standards for micrometers acc. factory standards
  • ISO metric screw threads according to ISO 1502:1996 (DIN ISO 965:1998)
  • Unified threads and thread gauges according to ANSI/ASME B1.1-1982/ B1.2-1983
  • Gauges for unified threads (ANSI/ASME B1.1-1982) according to BS 919-1:2007
  • Gauges for Metric M Screw Threads according to ANSI/ASME B1.16M-1984
  • NPSM pipe threads according to ANSI/ASME B1.20.1-1983
  • Screw taps according to DIN 802:1982
  • Pipe threads and gauges according to ISO 228:2000 (also the older DIN 259:1979)
  • Steel conduit threads according to DIN 40431:1972
  • ISO metric trapezoidal screw threads according to DIN 103:1997
  • Parallel screw threads of Whitworth form according to BS 84:2007 / BS 919-2:2007
  • Metrical thread inserts according to DIN 8140:1999 (EG threads)
  • HELICOIL threads according to Boellhoff factory standard
  • Knuckle threads according to DIN 405:1997
  • Buttress threads according to DIN 513:1985 (factory standard for gauge values)
  • Threads for valves according to DIN 7756:1979 and ETRTO V.7
  • ACME Threads according to ASME / ANSI B 1.5 – 1988
  • Stub ACME Threads according to ASME / ANSI B 1.8 – 1988
  • Hot-dip galvanised threads according to DIN 965:1999
  • Pipe Threads, General purpose (NPT..) according to ANSI/ASME B1.20.1 - 1983
  • Pipe Threads where pressure-tight joints are made on the threads acc. to ISO 7-2:2000
  • Pipe threads for tubes and fittings according to BS21:1985
  • Metric External Taper Screw Threads according to DIN 158
  • Gages for Dryseal Pipe Threads (e.g. NPTF..) according to ASME B1.20.5-1991
  • Whitworth Pipe threads for threaded pipes and fittings acc. to DIN 2999 – July 1983