PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A6637End Fitting,flexible Casing

Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division · NSN 3040-00-708-2466 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-708-2466 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-708-2466. Primary manufacturer part number: A6637.
Features
  • End Fitting,flexible Casing — FSC 3040
  • General Characteristics Item Description: ALUMINUM ALLOY; ANODIZED FINISH; U/W 13/32 IN. OD FLEXIBLE CASING; MTG FLANGE TYPE; DIM. DATA,21/32 IN. LG O/A,63/63 IN.,5/8 IN. OD SHANK; END DATA,0.437 IN. ID,0.625 IN. LG BORE,W/FLANGE,3/32 IN. THK,W/MTG HOLES,4,0.120 IN. DIA,SPACED 3/4 IN. C TO C,THD DATA,MALE THD,5/8 IN.-27 THD,NS,RH,CLASS 2 FIT,0.406 IN. LG; NO SPECIAL FEATURES IN
  • 2 verified cross-references
  • Primary manufacturer: Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The End Fitting,flexible Casing, cataloged under National Stock Number 3040-00-708-2466, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-708-2466
Primary Part NumberA6637
Item NameEnd Fitting,flexible Casing
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division
StatusACTIVE
General Characteristics Item DescriptionALUMINUM ALLOY; ANODIZED FINISH; U/W 13/32 IN. OD FLEXIBLE CASING; MTG FLANGE TYPE; DIM. DATA,21/32 IN. LG O/A,63/63 IN.,5/8 IN. OD SHANK; END DATA,0.437 IN. ID,0.625 IN. LG BORE,W/FLANGE,3/32 IN. THK,W/MTG HOLES,4,0.120 IN. DIA,SPACED 3/4 IN. C TO C,THD DATA,MALE THD,5/8 IN.-27 THD,NS,RH,CLASS 2 FIT,0.406 IN. LG; NO SPECIAL FEATURES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5950-00-503-8659SMC752578 INTERCHANGEABLE
Reactor
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
A6637 Eaton Motor Site (USA)
A6637 PRIMARY Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division (USA)
Related Parts
5950-00-503-8659INTERCHANGEABLE
REACTOR
SMC752578

Frequently Asked Questions

What is NSN 3040-00-708-2466?

NSN 3040-00-708-2466 is a End Fitting,flexible Casing, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-708-2466?

NSN 3040-00-708-2466 has 2 cross-referenced part numbers: A6637 (Eaton Motor Site), A6637 (Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division).

What NSN replaces 3040-00-708-2466?

There is 1 known substitute for 3040-00-708-2466: 5950-00-503-8659. Verify interchangeability with system specifications before substitution.

What are the specifications of A6637?

Key specifications for A6637: General Characteristics Item Description: ALUMINUM ALLOY; ANODIZED FINISH; U/W 13/32 IN. OD FLEXIBLE CASING; MTG FLANGE TYPE; DIM. DATA,21/32 IN. LG O/A,63/63 IN.,5/8 IN. OD SHANK; END DATA,0.437 IN. ID,0.625 IN. LG BORE,W/FLANGE,3/32 IN. THK,W/MTG HOLES,4,0.120 IN. DIA,SPACED 3/4 IN. C TO C,THD DATA,MALE THD,5/8 IN.-27 THD,NS,RH,CLASS 2 FIT,0.406 IN. LG; NO SPECIAL FEATURES IN. 1 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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