Thread Gauges & Calibration
Go/no-go thread plugs and rings, calibrated and supplied with the certificate.
Thread gauges for checking the thread actually made, calibrated with the certificate so the shop floor check stands up in an audit. Worn gauges are the quiet cause of bad threads.
How we make it: Custom CNC parts service →
3–5 weeks
1 piece
ISO 9001:2015
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Standards | ISO · ASME · DIN · BSP | - |
| Thread range | M2–M48 (and imperial) | - |
| Gauge tolerance | Per the standard | - |
| Calibration | Certificate supplied | - |
| Types | Plug · ring · set plug | - |
| Recertification | Annual, on request | - |
Available Materials
- Tool steel (hardened)
- Steel 52100 (wear faces)
- Aluminium handles
Typical Applications
- Production thread checking
- Incoming inspection
- Audit preparation
- Repair verification
- Supplier qualification
Surface Finishes
- Hardened + ground
- Laser marked size
- Rust preventive
- Handles fitted
Industries Served
- Aerospace
- Automotive & EV
- Industrial Equipment
- Medical
- Energy & Oil & Gas
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Part size
- Thread range at M2–M48 (and imperial) decides which machine the part lands on and how many setups it needs. Size is the driver buyers most often leave out of a first enquiry, and it is the one that changes the quote fastest.
- Material
- The first material listed, Bearing Steel 52100 (100Cr6), rates 4/10 on our machinability scale at 60–66 HRC hardened · 183–217 HB annealed. On this shop's scale a harder alloy means slower passes and more tool changes, and that is cycle time the quote has to carry.
- Order size
- Minimum order is 1 piece, so on a first order setup and programming are spread over very few parts and they are most of the price. Repeat orders at the same quantity are cheaper without anything on the drawing changing.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- Thread gauges over the full thread range on the drawing
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- How often should thread gauges be recalibrated?
- Annually at minimum, and sooner if they are in constant use. A worn go gauge passes threads that are already oversize, and nothing in the paperwork will show it.
Related part families
Go / No-Go Gauges
Plug, ring and snap gauges built to your limits, hardened and certified with the report.
Checking Gauges
Attribute gauges for shop-floor checking, built to 10% of the part tolerance and certified.
Custom Bolts & Screws
M3–M48 bolts and screws to ASTM, ISO and DIN, thread rolled after heat treat so grain flows with the thread.