No. 8 36 TPI Thread Go Gauge UNF Right-Hand, Hardened Gauge Steel ANSI/ASME B1.1/B1.2 - Metav IndustryLine

Take advantage of ANSI/ASME conformity, hardened gauge steel and the precise 2A tolerance to streamline thread acceptance and reduce rework. Order the gauge directly via Metav Werkzeuge or consult our specialists for batch supply and integration into production checks.

Go thread ring gauge UNF No. 8-36, ANSI/ASME B1.1 (2A)

The Go thread ring gauge UNF No. 8-36 is a GO-type master gauge for rapid inspection of external UNF threads in production and quality control.

• UNF No. 8-36 GO gauge for quick inspection
• Hardened gauge steel for long service life
• Conforms to ANSI/ASME B1.1/B1.2 standards
• Tolerance class 2A for standard acceptance

Reliable pass/fail control to keep production moving

A GO ring gauge serves as an immediate pass/fail control for external threads and this gauge is designed for that purpose. The UNF No. 8-36 configuration verifies the functional minimum material condition of a screw thread so that parts that pass the gauge can proceed directly to assembly. Using a certified ring of hardened gauge steel minimises wear-related measurement drift and reduces the frequency of requalification, which in turn lowers downtime and the rate of non‑conforming parts entering the process.

Built to recognised standards for predictable interchangeability

Conformity to ANSI/ASME B1.1 ensures the thread form and pitch used for this product match widely accepted engineering practice for UNF threads. The 2A tolerance class specifies the acceptance envelope for external threads and aligns with common fastener specifications, delivering predictability in fit and interchangeability. For procurement and inspection teams this means reliable reproducibility between suppliers and consistent mating behaviour with standard internal threads.

Practical handling and inspection benefits

The compact ring design and clear designation (UNF No. 8-36 GO) support fast, repeatable checks at the workbench or inspection station. The hardened gauge steel construction provides resistance to abrasion and maintains the reference form during routine use; this lowers total cost of ownership by extending service intervals. By integrating a GO ring into an in‑process check, the inspection step becomes a rapid verification rather than a time‑consuming measurement, improving throughput without compromising quality.

Application focus and what it replaces

This GO ring gauge is intended for acceptance testing of external threaded parts, replacing time‑intensive dimensional measurement when a functional check suffices. It is suitable for production control in metalworking environments where UNF threads are specified. Using a dedicated GO master for acceptance checks reduces subjective assessment and ensures that only parts meeting the 2A acceptance criteria move forward, which helps minimise assembly issues and warranty costs.

Request a supply or technical quote from Metav Werkzeuge for the Go ring gauge UNF No. 8-36 (SKU M315.947.F); Metav Werkzeuge in Emmerich can advise on quantities, batch traceability and integration into inspection routines

Technical data

• Article number: M315.947.F
• GTIN: 4054469180090
• Weight: 0.1 kg

Facts

• Thread: UNF No. 8-36
• Tolerance class: 2A
• Standard: ANSI/ASME B1.1/B1.2

Special features

• Material: hardened gauge steel
• Type: GO ring gauge for external threads
• Thread direction: right-hand thread
• Application: acceptance testing and thread verification

FAQ

What is the primary use of this gauge?
The Go thread ring gauge UNF No. 8-36 is used for pass/fail acceptance testing of external UNF threads to ensure parts meet the functional minimum material condition.

Which standard does the gauge comply with?
This gauge conforms to the ANSI/ASME B1.1/B1.2 standard and is manufactured to the dimensional requirements associated with UNF threads and 2A tolerance.

What material is the ring made from and why does it matter?
The ring is produced from hardened gauge steel, which provides durability and wear resistance so the reference form remains stable over repeated inspections.

How does the tolerance class 2A affect acceptance?
Tolerance class 2A defines the acceptance envelope for external threads; the Go ring verifies that a part meets that envelope and will mate correctly with corresponding internal threads.

Is the gauge suitable for production-line checks?
Yes. The compact GO ring design allows rapid, repeatable checks at production workstations and inspection benches, improving throughput while ensuring quality.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com