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(A0221)PRODUCT DESCRIPTION
YOU ARE PURCHASING THE EXACT GAGE ASSEMBLY COMPANY 2-1/8-12 UN-2B GO / NOT GO THREAD PLUG GAGE PICTURED IN THIS LISTING.
This is a genuine Gage Assembly Company precision GO / NOT GO working thread plug gage designed for inspection of 2-1/8-12 UN Class 2B internal threads.
This is a large-size industrial thread plug gage incorporating both the GO and NOT GO members on a common heavy-duty handle.
The actual manufacturer marking is:
2.125-12 UN-2B
The actual pitch diameters marked on the gage are:
GO P.D.: 2.0709”
NOT GO P.D.: 2.0788”
These pitch diameters correspond to the standard 2-1/8-12 UN-2B internal thread gage specification.
PRODUCT SPECIFICATIONS
Brand: Gage Assembly Company
Manufacturer Marking: G.A.CO.
Product Type: Working Thread Plug Gage
Configuration: GO + NOT GO
Nominal Thread Size: 2-1/8-12 UN
Actual Manufacturer Size Marking: 2.125-12 UN-2B
Thread Series: UN – Unified National
Thread Class: 2B
Nominal Diameter: 2-1/8”
Decimal Nominal Diameter: 2.1250”
Threads Per Inch: 12 TPI
Thread Form: Unified 60° Thread
Thread Direction: Right-Hand
GO Pitch Diameter: 2.0709”
NOT GO Pitch Diameter: 2.0788”
Inspection Application: Internal Threads
Measurement System: Inch / Imperial
Gage Type: Double-Ended GO / NOT GO Working Thread Plug Gage
Quantity: 1 Complete Thread Plug Gage
Manufacturer: Gage Assembly Company
Country of Manufacture: USA
Condition: Used
CONDITION
USED – GOOD CONDITION.
This precision thread plug gage has been previously used in industrial inspection service.
The black center handle shows substantial cosmetic wear, including scratches, paint loss, scuffs, and handling marks.
The steel GO and NOT GO gaging members show normal surface discoloration, storage marks, and signs of previous use.
The precision thread forms remain clearly visible in the photographs, and the original manufacturer markings remain identifiable.
Please carefully review all actual photographs for the exact cosmetic condition and threaded measuring surfaces.
FUNCTION
This GO / NOT GO working thread plug gage is intended for inspection of 2-1/8-12 UN Class 2B internal threads.
Class 2B identifies the internal-thread tolerance class.
The GO member, P.D. 2.0709”, is used to verify the applicable GO functional limit of the internally threaded component.
The NOT GO member, P.D. 2.0788”, checks the applicable NOT GO pitch-diameter limit.
This is a working inspection plug gage, intended for checking internally threaded components. It is not a setting plug used to calibrate adjustable thread ring gages.
IMPORTANT INFORMATION
Exact specification:
2-1/8-12 UN-2B
Actual manufacturer marking:
2.125-12 UN-2B
Actual pitch diameters:
GO P.D.: 2.0709”
NOT GO P.D.: 2.0788”
This is a Thread Plug Gage for internal threads, not a Thread Ring Gage for external threads.
Because this is a large precision industrial gage, buyers should verify the exact 2-1/8” nominal diameter, 12 TPI, UN thread series, Class 2B, GO / NOT GO pitch diameters, and intended inspection application before purchasing.
INCLUDED
1 × Gage Assembly Company 2-1/8-12 UN-2B GO / NOT GO Working Thread Plug Gage
GO P.D.: 2.0709”
NOT GO P.D.: 2.0788”
YOU WILL RECEIVE THE EXACT ITEM PICTURED IN THIS LISTING.
SHIPPING
This is a large and heavy precision inspection gage.
The gage will be carefully protected and securely packaged to prevent damage to the precision threaded measuring members during transportation.
Orders normally ship within 1–3 business days.
Estimated delivery time is approximately 7–15 days, depending on destination and carrier service.
Tracking information will be provided after shipment.
RETURN POLICY
Returns are not accepted unless the item arrives damaged during shipping or is materially different from the listing description.
Please verify the exact 2-1/8-12 UN-2B specification, GO P.D. 2.0709”, NOT GO P.D. 2.0788”, and intended internal-thread inspection application before purchasing.
SELLER: BLUERIVERXTOOLS
