1-800-232-4243 (GAGE)
Thread Gage Manufacturing Capabilities2019-04-18T16:16:03-05:00

Precision Thread Gages

Gage Assembly offers high quality, specialty gages and threads that are manufactured with precision and accuracy.

For over 65 years, we’ve been a trusted gage manufacturer because of our professionalism and integrity. We provide customers with quality manufacturing services that meet their needs, often with short lead times.

Our engineered plant, gage lab and technical expertise enable us to consistently manufacture highly accurate gages. Our state of the art manufacturing equipment includes the latest CNC and conventional Internal and External High Precision thread grinding machines. This allows for skilled fabrication during the manufacturing process. Fine tool steels and advanced calibrated inspection equipment combine to provide our customers with reliable, superior wear gages. Along with extended performance, Gage Assembly manufactures competitively priced special thread gages for our customers.

Gage Assembly’s reputation as one of the industry’s highest caliber gage manufacturers is well-earned. As a member of the National Association of Manufacturers, we’ve provided threaded components for some of the world’s most demanding industries. Our specialty thread gages and ring gages have been used to check parts used in space exploration and satellite technology. We also provide quality assurance for a wide range of manufacturing processes worldwide.

Gage Assembly’s highly-skilled professionals, combined with our state of the art technology, allow us to manufacture custom thread gages based on the needs of each customer. Our successful experience over the last six decades is why our customers trust us. Our quality thread plugs and rings are manufactured with accuracy and precision.

Contact Us today and we’ll be happy to discuss a gage manufacturing solution that will meet your requirements.

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ANSI thread series designation

DesignationsThread SeriesReference
UN, UNC, UNF UNEF, UNSUnified Inch Screw Threads (UN and UNR Form)B1.1
Gages & Gaging for United Inch Screw ThreadsB1.2
UNJ, UNJC, UNJF, UNJEF, UNJSUnified Inch Screw Threads (UNJ Thread Form)B1.15
Screw Threads Gaging Systems for Dimensional Acceptability-inch and Metric Screw Threads (UN, UNR, UNJ, M and MJ)B1.3
NC-5 HF, NC-5CSF, ETC.Class 5 Interference-Fit ThreadB1.12
MMetric Screw Threads-M profileB1.13M
Gages and Gaging for Metric M Screw ThreadsB1.16M
MJMetric Screw Threads-MJ ProfileB1.21M
Gages and Gaging for MJ Series Metric Screw ThreadsB1.22M
UNMUnified Minature Screw ThreadsB1.10M
NPTPipe Threads, General PurposeB1.20.1
NPTF, PTF-SAE Short, Etc.Dryseal Pipe ThreadsB1.20.3
Gaging for Dryseal pipe ThreadsB1.20.5
ANPTPipe Threads, Taper Aeronautical National Form
Symbol ANPT Design and Inspection Standard
SAE AS71051
NPSMAmerican Standard Straight Pipe Threads for free-Fitting
Mechanical Joints for Fixtures
NPSLAmerican Standard Straight Pipe Threads for Loose-Fitting
Mechanical Joints with Locknut
NPSCAmerican Standard Straight Pipe Threads in pipe CouplingsB1.20.1
NPSFDryseal American Fuel Internal Straight Pipe ThreadsB1.20.3
NPSIDryseal American Intermediate Internal Straight Pipe ThreadsB1.20.3
NH, NPSH, NHRHose Coupling Screw ThreadsB1.20.7
NHFire Horse ConnectionsNFPA 1963
NGT, SGTNational Gas Taper ThreadsH28/9A
NGONational Gas Outlet ThreadsH28/9A
NGSNational Gas Straight ThreadsH28/9A
R, Rc, Rp (BSPT)British Taper Pipe Threads & Gages (BS-21 obsolete)ISO 7/2
G (BSPP)British Straight Pipe Threads & Gages (BS2779 obsolete)ISO 228-2
BSW, BSFBritish Parallel Screw Threads of Whitworth FormBS84
BABritish Screw ThreadsBS 57
ACMEAcme Screw Threads, General PurposeB1.5
ACME-CAcme Screw Threads, CentralizingB1.5
STUB ACMEStub Acme Screw ThreadsB1.8
BUTTButtress inch Screw threads 7°/45°B1.9
ANSI/AMOMicroscope Objective ThreadsB1.12
AWWAUnderground Service line Valves and FittingsC800-84
DINGerman Specifications 
JISJapanese Industrial Standard 
ISOInternational Standard Organization 
Notes: (1) All Threads, Except NGO, are Right Hand Unless Otherwise Designated. For NGO Threads, Designations RH or LH are required.
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