VÖLKEL no-go thread ring gauge with knurled edge and red marking dot for inspection.

Völkel precision thread ring gauge held by hand, designed for accurate internal thread inspection according to standards

UNF (Unified fine)

Precision NOGO Thread Ring Gauge (Tol. 2A) - UNF 1/2 x 20

Item no. 16458

€60.90

in stock - more than 10 pieces available

VÖLKEL delivers exclusively to specialized dealers. Online you can buy VÖLKEL products here.

The prices are in Euro plus VAT and shipping, insurance and packaging costs.

Application

The thread NO-GO ring gauge must not screw into the part by hand more than two threads (without using excessive force). If the ring gauge can be screwed into the thread by more than two threads, the thread does not meet the desired requirements (=scrap). The no-go thread gauges are marked in red.

The reference temperature for parts and gauges is 20° Celsius.

As a manufacturer, VÖLKEL will issue a factory calibration certificate upon request (price on request). Calibrated at a measurement laboratory separate from VÖLKEL to specifications and standards (DIN, ISO, ANSI) specified for the respective specimen. Calibrated using IAC thread scanners.

Additional information

Type of thread	Unified Fine Thread
Standard	ANSI B 1.1
Tolerance	2A
Size	UNF 1/2 x 20
Item number	16458
Gauge dimension	ANSI B 1.2
Thread standard	ANSI B 1.1

The thread NO-GO ring gauge must not screw into the part by hand more than two threads (without using excessive force). If the ring gauge can be screwed into the thread by more than two threads, the thread does not meet the desired requirements (=scrap). The no-go thread gauges are marked in red.

The reference temperature for parts and gauges is 20° Celsius.

As a manufacturer, VÖLKEL will issue a factory calibration certificate upon request (price on request). Calibrated at a measurement laboratory separate from VÖLKEL to specifications and standards (DIN, ISO, ANSI) specified for the respective specimen. Calibrated using IAC thread scanners.

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