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Vermont Gage 371101050 #0-80 UNF 2A Go And No-Go Set Plug Gage Assembly

2.6 out of 5 stars 2 customer reviews

Price: $165.00 & FREE Shipping—or get FREE Two-Day Shipping with Amazon Prime
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  • Inch go and no-go plug gage set for inspecting pitch diameter and functional threads of internally threaded parts
  • Made from Rockwell c scale (Rc) cold stabilized tool steel 60/62 for durability
  • Supplied with a certificate of accuracy traceable to National Institute of Standards and Technology (NIST)
  • Class X tolerance per ANSI B1.2 for unified inch screw threads
  • Available in a range of sizes and thread fits for different applications

Product Specifications
UPC 662631500252
EAN 0662631500252
Number of Items 1
Size #0-80 UNF
Specific Uses For Product Go and No-Go
Thread Style 2A
Specification for this product family
Part Number 371101050-parent
Measurement System Inch
Brand Name Vermont Gage
Material Tool Steel
Style Class X
Thread Type UN

1 used from $132.00
$165.00 & FREE Shipping—or get FREE Two-Day Shipping with Amazon Prime Only 2 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Product description

Size:#0-80 UNF

The Vermont Gage steel go and no-go gage set is a class X inch plug gage set for inspecting pitch diameter and functional threads of internally threaded parts. This tool is made from Rockwell c scale (Rc) cold stabilized steel for durability. It has a 2” handle with a threaded go plug on one end and a threaded no go plug on the other. A certificate of accuracy traceable to National Institute of Standards and Technology (NIST) is available for each gage, and each handle is marked with nominal size, threads per inch, class of fit, and pitch diameter. This gage set meets American National Standards Institute (ANSI) B1.2 standard for unified screw threads and is available in a range of sizes and thread fits for different applications.

Vermont inch gages have light blue handles to help avoid confusion with metric gages (that have yellow handles) during inspection. This inch gage set is available in a range of sizes followed by an abbreviation that indicates the type of thread to be inspected, including NPSM (National Pipe Straight Mechanical), UN (Unified), UNC (Unified Coarse), UNF (Unified Fine), or UNEF (Unified Extra Fine). This go and no go gage set can be ordered with a class fit of 2A (looser tolerance) or 3A (for a tighter tolerance).

Go and no-go plug gages are used to inspect the pitch diameter and functional thread for internally threaded parts to determine if they pass or fail tolerances (allowed deviation from the stated size). Go gages inspect form, lead, and pitch to ensure that the part being inspected is smaller than the maximum permitted pitch diameter and functional size, if the gage screws into the go plug gage it “passes”. No-go gages inspect pitch diameter and determine if a part is larger than the minimum size requirement by its inability or “failure” to screw into the threaded part (the part’s thread is too small). Go and no-go plug gages are used in conjunction to inspect the size and tolerance of threaded parts. They are available in different classes, based on acceptable tolerance (allowed deviation from the stated size as defined by ANSI B1.2 for unified inch screw threads). Standard tolerances and classes for gages up to .825” (20.96 mm) are as follows: Class XX (.00002" or .0005 mm), Class X (.00004" or .0010 mm), Class Y (.00007" or .0018 mm), Class Z (.0001" or .0025mm), and Class ZZ (.0002" or .0050 mm). For gages with a wider diameter, tolerance gradually increases for each class.

Vermont Precision Tools manufactures precision round and ground pins, perforators, and special punches. The company, founded in 1968 and headquartered in Swanton, VT, formed Vermont Gage division in 1980 to manufacture fixed limit gages. It meets ISO 9001:2000 standards.


Product details

Size: #0-80 UNF
  • Shipping Weight: 0.2 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B0039MI760
  • Average Customer Review: 2.6 out of 5 stars 2 customer reviews
  • Amazon Best Sellers Rank: #635,713 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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on May 19, 2017
Size: 1"-12 UNF|Verified Purchase
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on September 4, 2017
Size: #3-48 UNC|Verified Purchase
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