5/16" x 24 UNF Thread Go Ring, Right-Hand, Hardened Gauge Steel, ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of a compact inspection solution that combines repeatable accuracy, hardened gauge steel construction and full conformity to ANSI/ASME B1.1, ensuring reliable thread verification in production and quality control. Order the gauge directly via Metav Werkzeuge or contact our consultants for application advice.

UNF thread ring gauge GO, 5/16 x 24, ANSI/ASME B1.1, 2A — Metav IndustryLine

The UNF thread ring gauge GO, 5/16 x 24 is a hardened gauge for fast verification of external UNF threads to ANSI/ASME B1.1 tolerance class 2A, suitable for workshop and inspection use.

• UNF 5/16 x 24, tolerance class 2A
• Hardened gauge steel construction
• Compliant with ANSI/ASME B1.1/B1.2
• Right-hand thread form

Precise verification that protects production flow

A GO ring gauge provides a clear, binary check: the measured external thread either passes the gauge or requires attention. Built from hardened gauge steel, this ring offers consistent dimensional stability across repeated use, reducing rework and line stoppages. With a 24 tpi pitch and tolerance class 2A, the gauge matches the common UNF 5/16 specification used across assembly and fastening applications, enabling quick in-process checks that keep throughput steady and inspection time minimal.

Robust construction for repetitive inspection tasks

The ring is manufactured from hardened gauge steel, which ensures resistance to wear and maintains the gauge form for prolonged periods under workshop conditions. The compact form factor and precise flank geometry mean the gauge withstands frequent handling and provides reproducible results. Durability translates directly into lower lifetime cost and fewer tool changes, supporting a lean quality routine without sacrificing measurement confidence.

Conformity with international standards for audit readiness

Compliance with ANSI/ASME B1.1/B1.2 offers traceable, industry-recognised acceptance criteria for UNF threads. Using a standardised GO gauge simplifies documentation during audits and supplier inspections and forms a clear acceptance protocol on the shop floor. The tolerance class 2A designation indicates the gauge is matched to common external thread classes, aligning inspection practice with engineering drawings and procurement requirements.

Practical handling and workshop integration

The gauge’s nominal size of 5/16 in and 24 tpi make it straightforward to incorporate into daily control routines or station-based inspections. Lightweight yet rigid, the component is easy to store and handle; its right-hand thread orientation corresponds with the standard fastening direction, removing potential confusion during checks. For production environments that require fast decisions, the GO ring provides immediate, unambiguous feedback to operators and inspectors.

Contact Metav Werkzeuge today for tailored advice on integrating this UNF GO thread ring gauge (M315.951.F) into inspection routines and to benefit from our European stock and calibration options

Technical data

• Article number: M315.951.F
• Label: Gewinde-Lehrring UNF GO, 5/16 x 24 ANSI B1.1 / 2A
• GTIN: 4054469180199
• Material: Gauge steel, hardened
• Standard: ANSI/ASME B1.1/B1.2
• Nominal size: 5/16 in

Facts

• Threads per inch: 24 tpi
• Tolerance class: 2A
• Weight: 0.1 kg

Special features

• Right-hand thread
• Category: Gauges / Lehren
• Condition: Good

FAQ

What does a GO ring gauge verify?
A GO ring gauge checks that an external UNF thread is within the maximum material limit and can be assembled; the UNF GO ring gauge (M315.951.F) confirms acceptable thread geometry for 5/16 x 24 UNF, class 2A.

Is the gauge suitable for production use or only for sampling?
The hardened construction and conformity to ANSI/ASME standards make this gauge suitable for regular production checks and routine sampling in workshop inspection stations.

Which standard does the gauge reference for acceptance criteria?
Acceptance is based on ANSI/ASME B1.1/B1.2; the ring gauge is manufactured to match the external thread form and tolerance class specified by that standard.

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