Thread Plug Gauges Calibration

Screw plug gauges are precision tools used to check the pitch diameter, major diameter, and minor diameter of threaded holes. Calibration ensures these gauges provide accurate measurements, which is critical for ensuring that threaded components fit correctly. Regular calibration ensures that the measurements taken by the screw plug gauges remain consistent over time, which is crucial for maintaining product quality and ensuring that components are interchangeable.

Rhopoint Metrology offers ISO 17025 UKAS certified calibration for screw plug gauges.ย With years of experience in the field and our specialized knowledge ensures a thorough and precise calibration process.

Our services are available onsite and at our laboratories in Birmingham and Bristol. Enquire now for pricing.

Thread Plug Gauges Calibration Services

Thread Plug Gauges

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UKAS Calibration for Screw Plug – Parallel – Single Ended – up to 100 mm (up to 4″)UKAS
UKAS Calibration for Screw Plug – Parallel – Single Ended – 100 – 150 mm (4 – 6″)UKAS
UKAS Calibration for Screw Plug – Parallel – Single Ended – 150 – 250 mm (6 – 10″)UKAS
UKAS Calibration for Screw Plug – Parallel – Single Ended – above 250 mm (above 10″)UKAS
UKAS Calibration for Screw Plug – Parallel – Double Ended – up to 100 mm (up to 4″)UKAS
UKAS Calibration for Screw Plug – Parallel – Double Ended – 100 – 150 mm (4 – 6″)UKAS
UKAS Calibration for Screw Plug – Parallel – Double Ended – 150 – 250 mm (6 – 10″)UKAS
UKAS Calibration for Screw Plug – Parallel – Double Ended – above 250 mm (above 10″)UKAS
UKAS Calibration for Plug Gauges – Threaded (Screw Plugs) – Taper – up to 50 mm (up to 2″)UKAS
UKAS Calibration for Plug Gauges – Threaded (Screw Plugs) – Taper – above 50 mm (Above 2″)UKAS
UKAS Calibration for Plug Gauges – Threaded (Screw Plugs) – Trapezoidal / Acme – up to 50 mm (up to 2″)UKAS
UKAS Calibration for Plug Gauges – Threaded (Screw Plugs) – Trapezoidal / Acme – 50 up to 150mm (above 2″ – 6″)UKAS
UKAS Calibration for Plug Gauges – Threaded (Screw Plugs) – Trapezoidal / Acme – 150 up to 250mm (over 6 up to 10″)UKAS
Traceable Calibration for Screw Plug Gauge – Line Pipe – up to 25mm (Up to 1″)Traceable
Traceable Calibration for Screw Plug Gauge – Line Pipe – 25mm – 50mm (From 1 – 2″)Traceable
Traceable Calibration for Screw Plug Gauge – Line Pipe – 50mm – 100mm (From 2 – 4″)Traceable
UKAS Calibration for Plug Gauges – Threaded (Screw Plugs) – Buttress – up to 50 mm (up to 2″)UKAS
UKAS Calibration for Plug Gauges – Threaded (Screw Plugs) – Buttress – above 50 mm (above 2″)UKAS

Need assistance with your calibration?

If you haven’t found the calibration you require or need some further assistance with your requirement, contact us using this form and we can find the solution you are looking for.ย 

To ensure we can promptly address your calibration enquiry, please complete the form with all the necessary details. This will help us to provide you with accurate and timely assistance.

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Thread Gauges

BS 84: 2007, BS 1580: 2007, BS 3643: 2007, BS 93: 2008, BS 4377: 1991, BSA: 346: 2000, BSA 358-1: 2000, ASME B1.5: 1997, ANSI B1.8: 1977, BS EN ISO 228-1: 2003, BS EN 10226-3: 2005, ISO 7-2: 2000, BS 1104: 1957, BS 6293-2: 1994, ISO 5855-2: 1988, BS 5346: 1976, BS 4568-1: 1970, BS 4084: 1978, ISO 3161: 1977, BS 3409-1: 1961, BS 2779: 1986, BS 4568: 1970, BS 1657: 1950, BS 341-1: 1991, BS 21: 1985

Theses standards specify the tolerances and limits for simple forms of thread gauges, such as:

Parallel thread plug gauges

Parallel thread ring gauges

Care and use

  1. Always select the thread gauge that best fits the application
  2. Care should be taken while using thread gauges.ย  Should you drop a thread gauge, it should be re-calibrated/repaired before reusing it
  3. Gauges should be protected from damage when not in use. Rhopoint recommend applying a specialist coating to the thread gauge when not in use, (full details on this process is available directly from Rhopoint, contact us for further information)
  4. Do not use excessive force when applying the gauge to the component as this may result in either damage to the component or gauge
  5. Never use a thread gauge that has not been calibrated, if in doubt consult an appropriate authority.

It is highly recommended that an appropriate authority such as a UKAS approved laboratory carries out a full calibration on thread gauges at least once a year. In between UKAS calibrations at a frequency based on usage, thread gauges should be calibrated in-house. A typical in-house calibration would include a written procedure and an associated calibration record sheet, which would contain as a minimum, the following listed information:

Thread gauges

(a) Serial number

(b) Location

(c) Procedure number

(d) Rate and compression correction

(e) Gauge tolerance

(f) Results

(g) Measurement uncertainty

(h) Sentence if appropriate

(i) Date and calibrators signature

(j) Traceability to National Standards

It is necessary that any person carrying out such calibration work should have received appropriate training and have shown the ability to be confident via a suitable training authority. Training records should be held and maintained.

Following are layouts for typical in-house calibrations for thread gauges:

Calibration to be carried out in accordance with in-house procedure number …………………..

Serial Number: Make:

Calibration Date: Sizes:

FEATURE EXAMINEDย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย  SPEC.ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย  MEASURED RESULTS

GO:

Major diameter

Pitch diameter

Minor diameter

NOT GO:

Major diameter

Pitch diameter

Minor diameter

(Go and NOT go are measured at the front, middle and back of the thread)

The thread gauges were visually inspected for damage and the following faults were noted:

MEASUREMENT UNCERTAINTY +/- 0.003mm (1-100mm range)

Source: UKAS schedule of accreditation, Calibration and measurement capability (CMC)

Calibrators Signature: ………………………………….

A traceability statement in this section would be required for all items and their relevant certification utilised for the calibration of thread gauges.

Example Certificate

Below is a layout for a typical in-house calibration for a screw plug gauge.

Rhopoint Metrology sample calibration certificate for screw plug gauge page 1 of 2
Rhopoint Metrology sample calibration certificate for screw plug gauge page 2 of 2

UKAS Calibration

All of our Laboratories are accredited to provide UKAS & Traceable calibrations to all the relevant standards giving you peace of mind.

Benefits of Calibration

Accurate & Reliable

Make consistent, accurate and reliable measurements

Increase Product Life

Ensure longevity of the measuring instruments

Safety and Reliability

Ensure safety in critical applications such as medical and aerospace