3/8" 24 TPI Thread Go/No-Go Ring Gauge UNF Right-Hand Hardened Gauge Steel ANSI/ASME B1.1 2A - Metav IndustryLine

Take advantage of standards‑compliant thread verification, durable hardened gauge steel and a precise 2A tolerance to prevent assembly failures and reduce rework. Order the thread ring gauge directly via Metav Werkzeuge or ask our consultants if additional guidance is required.

Thread ring gauge UNF NOGO, 3/8 x 24 ANSI B1.1 / 2A — Metav IndustryLine NOGO ring with hardened gauge steel

Thread ring gauge UNF NOGO, 3/8 x 24 ANSI B1.1 / 2A is a NOGO ring gauge for checking UNF external threads in line with ANSI/ASME B1.1, intended for workshop and production inspection of assemblies and fastener quality

• NOGO gauge for UNF 3/8‑24
• Tolerance class 2A, ANSI/ASME compliant
• Hardened gauge steel for durability
• Right‑hand thread verification

Reduce rejects with unequivocal go/no‑go control

A dedicated NOGO ring such as this removes ambiguity from routine thread inspection: it is intended to detect oversized or incorrectly formed external threads on parts specified as UNF 3/8‑24. Conformity to ANSI/ASME B1.1 ensures that the thread form and pitch are evaluated against a recognised industrial reference, while the 2A tolerance class defines the maximum material condition for the external thread. Using a NOGO ring in-process provides an immediate, binary result — fit or no fit — which accelerates decision‑making on the shop floor and reduces downstream rework and assembly delays.

Built for repeatability and frequent use

Constructed from hardened gauge steel, the ring offers robust wear resistance across production batches and routine inspection cycles. The compact, balanced design keeps handling straightforward and minimises the risk of accidental cross‑threading during checks. Small mass and firm geometry contribute to repeatable readings and low operator strain, so inspectors can maintain throughput without compromising on accuracy. Regular bench checks and adherence to a basic maintenance routine keep the tool serviceable for extended periods.

Practical inspection workflow for production quality assurance

In typical use the NOGO ring is offered to the external thread; failure is indicated if the ring enters fully — a clear reject condition. This simple procedure integrates seamlessly into incoming inspection, final control or first‑off checks, and supports statistical process control by providing fast, repeatable verification. The ring’s right‑hand thread geometry matches standard fasteners and is suitable for serial inspection of turned or rolled external threads, helping to ensure component interchangeability and assembly reliability.

Standards and traceability that support regulated manufacturing

Compliance with ANSI/ASME B1.1/B1.2 and the defined 2A tolerance class provide documented assurance for contractors and quality departments that thread limits are controlled to industry expectations. The specified pitch of 24 threads per inch (tpi) and the nominal size of 3/8 in make the gauge directly applicable to common UNF fasteners used across automotive, hydraulic and precision assemblies. Clear identification through the product SKU and GTIN supports traceability in audit trails and inventory systems, helping to sustain supplier confidence and acceptance of measured parts

Specify Metav IndustryLine when enquiring — contact Metav Werkzeuge in Emmerich for application advice and reliable supply

Technical Data

• Article number: M315.982.F
• SKU: M315.982.F
• GTIN: 4054469180854
• Material: hardened gauge steel
• Net weight: 0.2 kg

Core data

• Thread size: 3/8 in
• Pitch: 24 tpi
• Thread form: UNF (Unified National Fine)
• Tolerance class: 2A
• Standard: ANSI/ASME B1.1/B1.2
• Type: NOGO thread ring gauge
• Thread direction: right‑hand

Special features

• NOGO check only (acceptance via non‑entry)
• Hardened for wear resistance
• Designed for production and workshop inspection
• Eclass: 21170214

FAQ

What does NOGO mean and how is it used in inspection?
A NOGO ring is a go/no‑go control that must not enter fully on a correctly dimensioned external thread; the NOGO ring here checks whether a UNF 3/8‑24 thread exceeds the upper limits specified by the standard

Which standards and tolerance class apply to this gauge?
This NOGO ring complies with ANSI/ASME B1.1/B1.2 and is manufactured to the 2A tolerance class for external threads

Is this gauge suitable for serial production checks?
Yes, the hardened construction and clear binary result make the NOGO ring appropriate for serial inspection, first‑off testing and final control in production environments

Can this ring gauge be used on left‑hand threads?
No, this unit is configured for right‑hand thread verification only; left‑hand checks require the corresponding left‑hand gauge

How is traceability handled for this product?
The gauge is identifiable by SKU M315.982.F and GTIN 4054469180854 for inventory and audit purposes

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