PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15726Diaphragm,upper O,y

Mission Systems Orchard Park Inc · NSN 1660-00-566-9666 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-566-9666 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-566-9666. Primary manufacturer part number: 15726.
Features
  • Diaphragm,upper O,y — FSC 1660
  • 2 verified cross-references
  • Primary manufacturer: Mission Systems Orchard Park Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Diaphragm,upper O,y, cataloged under National Stock Number 1660-00-566-9666, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Mission Systems Orchard Park Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameDiaphragm,upper O,y
FSC / FSG1660 — No Item Name Available (FSG 16)
ManufacturersMission Systems Orchard Park Inc (CAGE 04577); Ingersoll-Rand Company Dba Ingersoll-Rand (CAGE 03990)
Technical Specifications
ParameterValue
NSN1660-00-566-9666
Primary Part Number15726
Item NameDiaphragm,upper O,y
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerMission Systems Orchard Park Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-256-145615726 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5365-00-881-004415726 INTERCHANGEABLE
Shim
Collins Engine Nozzles, Inc
5331-00-984-37502-016 N674-7 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
3455-01-050-9863157-26 INTERCHANGEABLE
Blade,circular Saw,metal Cutting
Kett Tool Company (inc)
5340-01-323-144815726 INTERCHANGEABLE
Standoff,threaded,spacing
Aerosonic Llc
6520-01-335-938415726 INTERCHANGEABLE
Spreader,endodontic,finger
Kerr Corporation
8340-01-667-532615726 INTERCHANGEABLE
Bag,tent Frame Parts
Hdt Expeditionary Systems Inc
Cross-Reference Index
Part NumberManufacturer
15726 PRIMARY Mission Systems Orchard Park Inc (USA)
15726 Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
Related Parts
5330-00-256-1456INTERCHANGEABLE
SEAL,PLAIN ENCASED
15726
5365-00-881-0044INTERCHANGEABLE
SHIM
15726
5331-00-984-3750INTERCHANGEABLE
O-RING
2-016 N674-7
3455-01-050-9863INTERCHANGEABLE
BLADE,CIRCULAR SAW,METAL CUTTING
157-26
5340-01-323-1448INTERCHANGEABLE
STANDOFF,THREADED,SPACING
15726
6520-01-335-9384INTERCHANGEABLE
SPREADER,ENDODONTIC,FINGER
15726
8340-01-667-5326INTERCHANGEABLE
BAG,TENT FRAME PARTS
15726

Frequently Asked Questions

What is NSN 1660-00-566-9666?

NSN 1660-00-566-9666 is a Diaphragm,upper O,y, manufactured by Mission Systems Orchard Park Inc, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-566-9666?

NSN 1660-00-566-9666 has 2 cross-referenced part numbers: 15726 (Mission Systems Orchard Park Inc), 15726 (Ingersoll-Rand Company Dba Ingersoll-Rand).

What NSN replaces 1660-00-566-9666?

There are 7 known substitutes for 1660-00-566-9666: 5330-00-256-1456, 5365-00-881-0044, 5331-00-984-3750 and 4 more. Verify interchangeability with system specifications before substitution.

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