PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

126940Ring Assembly

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 2810-00-474-2926 · FSC 2810 · No Item Name Available
Verified by PartsTable
NSN 2810-00-474-2926 — this item is cataloged by the U.S. Government under National Stock Number 2810-00-474-2926. Primary manufacturer part number: 126940.
Features
  • Ring Assembly — FSC 2810
  • General Characteristics Item Description: CONSISTS OF 2 HALF RINGS NUMBERED 126939; 0.187 IN. MIN AND 0.188 IN. MAX WIDE; 4.623 IN. OD; 4.318 IN. ID; 0.1875 IN. THICK; LEAD FLASH PER SPEC PWA 41; REMOVE RAISED METAL IN
  • 3 verified cross-references
  • Primary manufacturer: Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring Assembly, cataloged under National Stock Number 2810-00-474-2926, is classified within Federal Supply Class 2810 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2810-00-474-2926
Primary Part Number126940
Item NameRing Assembly
FSC / FSG2810 / 28 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusACTIVE
General Characteristics Item DescriptionCONSISTS OF 2 HALF RINGS NUMBERED 126939; 0.187 IN. MIN AND 0.188 IN. MAX WIDE; 4.623 IN. OD; 4.318 IN. ID; 0.1875 IN. THICK; LEAD FLASH PER SPEC PWA 41; REMOVE RAISED METAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4820-00-365-62563A650 INTERCHANGEABLE
Valve,check
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
5331-01-371-78161269-40 INTERCHANGEABLE
O-Ring
Goodrich Corporation
2040-01-486-7066126940 INTERCHANGEABLE
Fender Lifeline Assembly
Jered Llc
6610-01-503-5066126940 INTERCHANGEABLE
Computer,flight Director
Astronautics Corporation of America
Cross-Reference Index
Part NumberManufacturer
AS126940 Aircraft Supplies (USA)
126940 PRIMARY Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
126940 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
4820-00-365-6256INTERCHANGEABLE
VALVE,CHECK
3A650
5331-01-371-7816INTERCHANGEABLE
O-RING
1269-40
2040-01-486-7066INTERCHANGEABLE
FENDER LIFELINE ASSEMBLY
126940
6610-01-503-5066INTERCHANGEABLE
COMPUTER,FLIGHT DIRECTOR
126940

Frequently Asked Questions

What is NSN 2810-00-474-2926?

NSN 2810-00-474-2926 is a Ring Assembly, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 2810 (No Item Name Available). Status: active.

What are the part numbers for NSN 2810-00-474-2926?

NSN 2810-00-474-2926 has 3 cross-referenced part numbers: AS126940 (Aircraft Supplies), 126940 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.), 126940 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 2810-00-474-2926?

There are 4 known substitutes for 2810-00-474-2926: 4820-00-365-6256, 5331-01-371-7816, 2040-01-486-7066 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 126940?

Key specifications for 126940: End Item Identification: ACFT ENG R2800; General Characteristics Item Description: CONSISTS OF 2 HALF RINGS NUMBERED 126939; 0.187 IN. MIN AND 0.188 IN. MAX WIDE; 4.623 IN. OD; 4.318 IN. ID; 0.1875 IN. THICK; LEAD FLASH PER SPEC PWA 41; REMOVE RAISED METAL IN. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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