1 1/4" Thread Go/No-Go Ring Gauge UNF 12 TPI Right-Hand ANSI B1.1/B1.2, Hardened Gauge Steel - Metav IndustryLine

Take advantage of the combination of precise thread verification, hardened gauge steel construction and ANSI/ASME conformity to keep production quality consistent and reduce rework; order the gauge directly via Metav Werkzeuge or consult the technical team for application advice.

Thread Ring Gauge No-Go — 1 1/4" x 12 UNF, ANSI/ASME B1.1, 2A (right-hand)

The Thread Ring Gauge No-Go (M315.992.F) provides a fast, repeatable check for oversized external UNF threads in production and quality-control environments.

• No-Go control for oversize external threads
• Conforms to ANSI/ASME B1.1/B1.2 standards
• Hardened gauge steel for long service life
• Tolerance class 2A for fine thread acceptance

Assured rejection of non-conforming threads for efficient QC

The No-Go ring is designed to identify external threads that exceed allowed limits so that only parts within specification proceed to assembly. Built to the ANSI/ASME B1.1 standard and specified as 2A tolerance, the gauge provides an objective, pass/fail decision that simplifies inspection routines. Using a dedicated rejection gauge reduces cycle time at the control station and lowers the rate of downstream rework by eliminating borderline parts before they enter assembly.

Robust construction that keeps inspection stable over time

Manufactured from hardened gauge steel, the ring resists wear and maintains its verification geometry under repeated use. The compact ring shape is optimised for workshop handling and ensures stable seating on the workpiece during checks. The instrument’s right-hand thread geometry and nominal size 1 1/4" x 12 UNF match common UNF external threads, enabling consistent comparison to the drawing specification and predictable lifetime performance in industrial environments.

Integration with production workflows and traceability

The ring gauge serves as a clear, binary control in go/no-go inspection plans and is suitable for integration into routine sampling schemes. Using a standardised ring gauge for no-go verification helps document conformity across production batches and supports quality records required by customers or internal audits. The simple functionality requires minimal training, while the adherence to established standards aids communication with suppliers and inspectors.

For guaranteed compliance with ANSI thread requirements and tailored delivery options contact Metav Werkzeuge in Emmerich to secure the M315.992.F No-Go ring gauge and specialist application guidance.

Technical data

• Article number: M315.992.F
• GTIN: 4054469181134
• Tariff number: 90173000

Facts

• Size: 1 1/4" x 12 UNF
• Pitch: 12
• Weight: 0.6 kg

Special features

• Material: hardened gauge steel
• Standard: ANSI/ASME B1.1/B1.2
• Tolerance class: 2A
• Thread direction: right-hand
• Type: No-Go ring gauge

FAQ

What is this gauge used for?
The No-Go ring gauge M315.992.F is used to check whether external UNF 1 1/4" x 12 threads exceed the maximum material condition and therefore must be rejected.

Which standard does the gauge follow?
This ring gauge conforms to ANSI/ASME B1.1/B1.2, so inspection results align with common UNF thread specifications.

What material is the gauge made from and why does that matter?
The gauge is manufactured from hardened gauge steel, which gives the M315.992.F durable wear resistance and consistent geometric stability during repeated inspections.

What does the 2A tolerance class indicate?
Tolerance class 2A specifies the acceptable fit and clearance for external threads; the No-Go ring verifies the thread does not exceed the allowances set by that class.

Can this gauge be used on left-hand threads?
No; the M315.992.F is produced for right-hand UNF threads and should only be used with matching thread direction.

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