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M18 x 0.5mm [6g] Metric Fine Pitch - Go Ring Thread Gauge (JBO Johs Boss)
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M18 x 0.5mm [6g] Metric Fine Pitch - Go Ring Thread Gauge (JBO Johs Boss)

JBO-RG-501667

Key Features

  • Thread Type: Metric Fine
  • Thread Size: M18
  • Pitch: 0.5mm
  • Tolerance: 6g
  • Gauge Type: Go
View Full Technical Specification.

Available In Other Materials & Finishes


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Official Johs Boss Thread Gauges Product.
$169.72 / each.
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M18 x 0.5mm [6g] Metric Fine Pitch - Go Ring Thread Gauge (JBO Johs Boss) Technical Specification

Brand/SeriesJBO Johs Boss
Certification ProvidedCertificate of Conformity
Gauge TypeGo
Manufacturing StandardISO 1502
MaterialHeat-Treated Steel
Pitch0.5mm
Suitable for UKAS CalibrationYes - Sold Separately
Supplied as PairNo
Thread SizeM18
Thread TypeMetric Fine
Tolerance6g

Product Certifications

Certificate of Conformity Included
Certificate of Conformity Included
RoHS Certified
RoHS Certified
REACH Certified
REACH Certified
ISO9001
ISO9001
Quality Approved

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M18 x 0.5mm [6g] Metric Fine Pitch - Go Ring Thread Gauge (JBO Johs Boss) Description

The M18 x 0.5mm [6g] Metric Fine Pitch - Go Ring Thread Gauge (JBO Johs Boss) has the following features:

  • ISO 1502 Manufacturing Standard
  • Heat-Treated Steel Material
  • 0.5mm Pitch
  • M18 Thread Size
  • 6g Tolerance
  • Metric Fine Thread Type
  • Go Gauge Type
  • JBO Johs Boss Brand/Series
  • No Supplied as Pair
  • Yes - Sold Separately Suitable for UKAS Calibration
  • Certificate of Conformity Certification Provided

Discover more about the Ring Thread Gauges range

Ring Thread Gauges are designed for the external measurement of male threads, such as those found on screws. Thread Gauges within this range are available in both Go and No-Go varieties.

Metric Thread Gauges

Metric Ring Thread Gauges are manufactured in coarse pitch and fine pitch varieties, and are available for use with threads from M1 to M150. Right-hand and left-hand threads are available. For more details on ISO screw threads, please see our information on ISO Metric Machine Screw Thread Dimensions.

Imperial Thread Gauges

Imperial Ring Thread Gauges are available to suit thread sizes from No.0 up to 2 1/2 inches.

Bespoke Ring Thread Gauges

Ring Thread Gauges can also be manufactured for use with less common thread types such as NPT and NPTF pipe threads, British BSW and BSF threads, and German PG threads. Thread Gauges are even available for use in the measurement of Trapezoidal Lead Screw threads.

What Are These Metrology Tools Used For?

These devices are used for measuring, checking and verifying threads. They are the best tool for measuring male threads as mentioned in our 'What Is Metrology?' article. For female threads such as those found on hex nuts, a Plug Gauge is required. 


Shipping Information

Shipping Destinations:Worldwide.
View delivery information.
Weight: Not defined.

Component History

Product First Available:Friday, March 31, 2017
Stock Last Updated:01:47 am
Sunday, October 17, 2021
Specification Last Updated:Thursday, September 16, 2021

APC / Barcodes

APC (Accu Product Code):JBO-RG-501667
EAN13 (International Article No.):5057196779192
ASIN (Amazon Stock Identification No.):ASIN not defined.