PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21251Converter,liquid Oxygen

Ingersoll-Rand Company Dba Ingersoll-Rand · NSN 1660-00-881-0306 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-881-0306 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-881-0306. Primary manufacturer part number: 21251.
Features
  • Converter,liquid Oxygen — FSC 1660
  • General Characteristics Item Description: 300 PSI,OPERATING PRESSURE; WARMING COIL METHOD OF OXYGEN WARMING; 75 L PER MIN,OUTPUT CAPACITY; W/PRESSURE OPENING-PRESSURE CLOSING VALVE; 1 RELIEF VALVE; W/CHECK VALVE; W/PRESSURE GAGE,W/CAPACITANCE GAGING ELEMENT; BRACKET MTG; OVER-ALL DIMENSIONS,25 IN. DIA,27 IN. DEEP; W/O SPARE PARTS IN
  • Reference Data and Literature: T.O. 15X2-6-3-53
  • 2 verified cross-references
  • Primary manufacturer: Ingersoll-Rand Company Dba Ingersoll-Rand
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Converter,liquid Oxygen, cataloged under National Stock Number 1660-00-881-0306, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Ingersoll-Rand Company Dba Ingersoll-Rand. Government technical data includes 2 verified specifications, 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1660-00-881-0306
Primary Part Number21251
Item NameConverter,liquid Oxygen
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerIngersoll-Rand Company Dba Ingersoll-Rand
StatusACTIVE
General Characteristics Item Description300 PSI,OPERATING PRESSURE; WARMING COIL METHOD OF OXYGEN WARMING; 75 L PER MIN,OUTPUT CAPACITY; W/PRESSURE OPENING-PRESSURE CLOSING VALVE; 1 RELIEF VALVE; W/CHECK VALVE; W/PRESSURE GAGE,W/CAPACITANCE GAGING ELEMENT; BRACKET MTG; OVER-ALL DIMENSIONS,25 IN. DIA,27 IN. DEEP; W/O SPARE PARTS IN
Reference Data and LiteratureT.O. 15X2-6-3-53
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5110-00-255-6557 INTERCHANGEABLE
Reamer,hand
5985-00-399-7135ESD3362-4 INTERCHANGEABLE
Mast Section
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5310-00-685-161821251 INTERCHANGEABLE
Washer,finishing
Mason Electric Co. Dba Mason Controls
4520-01-020-3263 INTERCHANGEABLE
Heating Element,electrical,nonim
5305-01-158-676521251 INTERCHANGEABLE
Setscrew
Erie Strayer Co
2910-01-168-8088J8123050 INTERCHANGEABLE
Float,carburetor
Chrysler Corp Engine and Components Sales Diversified Products Div
4730-01-231-862121251 INTERCHANGEABLE
Adapter,straight,tube to Boss
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5305-01-298-062921251 INTERCHANGEABLE
Screw,cap,hexagon Head
Industrial Technologies and Services Llc
6105-01-300-647221251-2 INTERCHANGEABLE
Motor,alternating Current
Silver King Refrigeration Inc.
Cross-Reference Index
Part NumberManufacturer
21251 PRIMARY Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
8148650 Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
Related Parts
5110-00-255-6557INTERCHANGEABLE
REAMER,HAND
5985-00-399-7135INTERCHANGEABLE
MAST SECTION
ESD3362-4
5310-00-685-1618INTERCHANGEABLE
WASHER,FINISHING
21251
4520-01-020-3263INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
5305-01-158-6765INTERCHANGEABLE
SETSCREW
21251
2910-01-168-8088INTERCHANGEABLE
FLOAT,CARBURETOR
J8123050
4730-01-231-8621INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
21251
5305-01-298-0629INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
21251
6105-01-300-6472INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
21251-2

Frequently Asked Questions

What is NSN 1660-00-881-0306?

NSN 1660-00-881-0306 is a Converter,liquid Oxygen, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-881-0306?

NSN 1660-00-881-0306 has 2 cross-referenced part numbers: 21251 (Ingersoll-Rand Company Dba Ingersoll-Rand), 8148650 (Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force).

What NSN replaces 1660-00-881-0306?

There are 9 known substitutes for 1660-00-881-0306: 5110-00-255-6557, 5985-00-399-7135, 5310-00-685-1618 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21251?

Key specifications for 21251: General Characteristics Item Description: 300 PSI,OPERATING PRESSURE; WARMING COIL METHOD OF OXYGEN WARMING; 75 L PER MIN,OUTPUT CAPACITY; W/PRESSURE OPENING-PRESSURE CLOSING VALVE; 1 RELIEF VALVE; W/CHECK VALVE; W/PRESSURE GAGE,W/CAPACITANCE GAGING ELEMENT; BRACKET MTG; OVER-ALL DIMENSIONS,25 IN. DIA,27 IN. DEEP; W/O SPARE PARTS IN; Reference Data and Literature: T.O. 15X2-6-3-53. 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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