PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21251-1Converter,liquid Oxygen

Mission Systems Orchard Park Inc · NSN 1660-00-912-3275 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-912-3275 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-912-3275. Primary manufacturer part number: 21251-1.
Features
  • Converter,liquid Oxygen — FSC 1660
  • Reference Data and Literature: T.O. 15X2-6-3-53
  • FSC Application Data: BREATHING OXYGEN SYSTEM
  • 6 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 Converter,liquid Oxygen, cataloged under National Stock Number 1660-00-912-3275, 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. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1660-00-912-3275
Primary Part Number21251-1
Item NameConverter,liquid Oxygen
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerMission Systems Orchard Park Inc
StatusACTIVE
Reference Data and LiteratureT.O. 15X2-6-3-53
FSC Application DataBREATHING OXYGEN SYSTEM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1660-00-079-435910C-0012-75 INTERCHANGEABLE
Converter,liquid Oxygen
Essex Industries, Inc. Dba Essex Industries
1660-00-899-8380 INTERCHANGEABLE
Converter,liquid Oxygen
5305-01-158-676521251 INTERCHANGEABLE
Setscrew
Erie Strayer Co
Cross-Reference Index
Part NumberManufacturer
8148650 Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
MIL-DTL-25666/6 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-27652 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
GCU20/A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
21251-1 PRIMARY Mission Systems Orchard Park Inc (USA)
21251-1 Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
Related Parts
1660-00-079-4359INTERCHANGEABLE
CONVERTER,LIQUID OXYGEN
10C-0012-75
1660-00-899-8380INTERCHANGEABLE
CONVERTER,LIQUID OXYGEN
5305-01-158-6765INTERCHANGEABLE
SETSCREW
21251

Frequently Asked Questions

What is NSN 1660-00-912-3275?

NSN 1660-00-912-3275 is a Converter,liquid Oxygen, manufactured by Mission Systems Orchard Park Inc, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-912-3275?

NSN 1660-00-912-3275 has 6 cross-referenced part numbers: 8148650 (Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force), MIL-DTL-25666/6 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-27652 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), GCU20/A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 21251-1 (Mission Systems Orchard Park Inc) and 1 more.

What NSN replaces 1660-00-912-3275?

There are 3 known substitutes for 1660-00-912-3275: 1660-00-079-4359, 1660-00-899-8380, 5305-01-158-6765. Verify interchangeability with system specifications before substitution.

What are the specifications of 21251-1?

Key specifications for 21251-1: Reference Data and Literature: T.O. 15X2-6-3-53; FSC Application Data: BREATHING OXYGEN SYSTEM; End Item Identification: C-141A AIRCRAFT A. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com