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Our Product Groups

Screw Ring Gauges

Screw Ring Gauges

Screw Ring Gauges are manufactured as Go or No Go Gauges.

Range Dia: 1 – 250mm
Pitch: 0.25 – 7.0mm
TPI: 100 - 4

ISO Metric Theads Technical Specifications
Unified Theads Technical Specifications
BSW and BSF Thread Gauges Technical Specifications
BA and G Series Thread Gauges Technical Specifications
Other Thread Forms and Specifications

Most Common Thread Forms:

  • UN & ISO 60°
  • WHIT 55°
  • ACME 29°
  • TRAP. 30°
  • BA 47.5°
  • BUTTRESS 7°/45° & 3°/30°
  • CONDUIT 80°INCL. DIN 40431
  • KNUCKLE ROUND FORM DIN405

Standards Go & No Go sizes as per the specification external thread product tables
Special Go & No Go sizes for Pre-Plate or Pre-Heat (sizes must be advised)

Can be supplied as:

  • Standard or non-standard blank lengths
  • Single start/lead or multi starts/leads

Specification:

Blank design is to BS1044:2008

Diameters:

  • 1 – 15mm / 0.040 – 0.60” are made from Caseharden steel
  • 15.5- 250mm / 0.610 – 10.00” Are made from B01 tool Steel

Contact our sales office or submit drawings for special thread forms or blank design

Call to Order  01425 624 500
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