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Square & Robertson Handheld Inspection Gages

Precision Inspection for Square Recess Fastener Systems

Universal Fastener Gages manufactures handheld inspection tools for Square Type III and Robertson square drive systems. These gages are designed to verify recess depth, dimensional compliance, and driver engagement across production and quality assurance environments. Our handheld systems provide fast, repeatable inspection without the need for bench-mounted equipment.

Square Type III Gages

#9016 Square Type III Penetration Gages — Used to verify proper recess depth and driver entry.

#9017 Square Type III Master Plug Gages — Reference standards for dimensional comparison and inspection setup.

#9018 Square Type III GO NO-GO Ring Gages — Provides objective pass / fail dimensional inspection.

#9019 Square Type III Test Block Gages — Used to validate inspection consistency and process control.

#9020 Square Type III Screwdriver Depth Gages — Verifies proper driver engagement depth and tool compatibility.

Robertson Square Gages

#9089 Robertson’s Square Penetration Gages — Confirms recess depth meets specification.

#9090 Robertson’s Square Master Plug Gages — Reference standards for dimensional validation.

#9091 Robertson’s Square GO NO-GO Ring Gages — Pass / fail dimensional inspection tools.

#9092 Robertson’s Square Test Block Gages — Supports inspection setup and repeatability.

#9093 Robertson’s Square Driver Bit Depth Gages — Ensures proper driver penetration and engagement.

Inspection Applications

Square and Robertson handheld gages are commonly used for:

  • In-process inspection
  • Receiving inspection
  • Final quality validation
  • Driver bit wear verification
  • High-volume production environments

These systems are widely used in automotive, construction fasteners, industrial equipment, and general manufacturing applications.

Need Help Selecting the Correct Square or Robertson Gage?

  • If you need to verify recess depth, choose a Penetration Gage.
  • If you need a reference standard, choose a Master Plug Gage.
  • If you need pass / fail inspection, choose a GO NO-GO Ring Gage.
  • If you need to validate inspection setup, choose a Test Block.
  • If you need to verify driver engagement, choose a Driver Bit Depth Gage.

Send us your print or fastener sample and our engineering team will recommend the correct handheld inspection solution.

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