7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) 7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) (pack of 1)

Accu Product Code (APC): JBO-PG-511615

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7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) 7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) (pack of 1)

Accu Product Code (APC): JBO-PG-511615

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Accu Product Code (APC): JBO-PG-511615
Thread Size: 7/16-20 UNJF
Hand: Right Hand
Gauge Type: Go/No-Go
Brand/Series: JBO Johs Boss
Provided Calibration: Uncalibrated
Material: Steel
Material Family: Steel
Suitable for UKAS Calibration: Yes - Enquire
System of Measurement: Imperial
Thread Pitch: 20 TPI
Tolerane Class: 3B
Weight per 100 Units: 5.4 kg

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7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) Description

The 7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) has the following features:

Brand/Series: JBO Johs Boss
Gauge Type: Go/No-Go
Hand: Right Hand
Steel
Steel Material Family
Provided Calibration: Uncalibrated
Suitable for UKAS Calibration: Yes - Enquire
System of Measurement: Imperial
Thread Pitch: 20 TPI
Thread Size: 7/16-20 UNJF
Tolerane Class: 3B

Discover more about the Imperial UNJF Plug Thread Gauges range.

Imperial UNJF (Unified National Fine - Controlled Root Radius) Plug Thread Gauges are precision tools designed to inspect and verify the accuracy of internal threads manufactured to UNJF standards. UNJF threads are defined by their fine pitch and controlled root radius, which increases fatigue resistance and provides a stronger thread profile. These gauges ensure that tapped holes, nuts and other internally threaded components meet strict dimensional tolerances for compatibility with UNJF threaded counterparts.

How Imperial UNJF Plug Thread Gauges Work

Imperial UNJF Plug Thread Gauges are used to test the quality of internal threads by threading the gauge into the tapped hole. The "Go" gauge ensures that the thread meets the minimum size requirement by fitting smoothly, while the "No-Go" gauge ensures the thread does not exceed the maximum tolerance by failing to fully engage. This two-step process is essential in industries such as aerospace, defence and automotive manufacturing, where thread integrity is critical. For example, these gauges are often used to verify threads in engine components and high-stress assemblies, ensuring secure and reliable connections.

What Material Imperial UNJF Plug Thread Gauges are Made From

These gauges are typically manufactured from hardened tool steel or high-grade alloy steel. Tool steel is chosen for its exceptional durability, wear resistance and ability to maintain precise dimensions over repeated use.

FAQs

Q: What is the difference between UNJF and UNF threads?

A: UNJF threads feature a controlled root radius, which increases fatigue resistance and thread strength compared to standard UNF threads.

Q: Why are Imperial UNJF Plug Thread Gauges important?

A: These gauges ensure internal threads conform to UNJF standards, guaranteeing compatibility and reliable performance in high-stress assemblies.

Q: How often should UNJF Plug Thread Gauges be calibrated?

A: Regular calibration is recommended to maintain accuracy, particularly for gauges used frequently or in critical applications.

Shipping Information

Shipping Destinations:

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Weight (100 items):

5.4kg

Component History

Product First Available:

Friday, November 15, 2024

Stock Last Updated:

11:53 PMThursday, June 4, 2026

Specification Last Updated:

Thursday, June 4, 2026

Barcodes

APC (Accu Product Code):

JBO-PG-511615

EAN13 (International Article No.):

5063648717636

ASIN (Amazon Stock Identification No.):

ASIN not defined.

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7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) 7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) (pack of 1)

7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) 7/16-20 UNJF [3B] - Go/No-Go Plug Thread Gauge (JBO Johs Boss) (pack of 1)

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