PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21237Valve,converter

Mission Systems Orchard Park Inc · NSN 1660-00-991-8039 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-991-8039 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-991-8039. Primary manufacturer part number: 21237.
Features
  • Valve,converter — FSC 1660
  • General Characteristics Item Description: THREE 1/8 IN. ANPT EXTERNAL CONNECTIONS;TWO 0.191 IN. DIA MTG HOLES;3.125 IN. LG EXCLUDING SETSCREW;2.250 IN. W;1.750 IN. DEEP O/A;SLOT DRIVE ADJUSTMENT SCREW IN
  • 4 verified cross-references
  • Primary manufacturer: Mission Systems Orchard Park Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,converter, cataloged under National Stock Number 1660-00-991-8039, 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 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1660-00-991-8039
Primary Part Number21237
Item NameValve,converter
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerMission Systems Orchard Park Inc
StatusACTIVE
General Characteristics Item DescriptionTHREE 1/8 IN. ANPT EXTERNAL CONNECTIONS;TWO 0.191 IN. DIA MTG HOLES;3.125 IN. LG EXCLUDING SETSCREW;2.250 IN. W;1.750 IN. DEEP O/A;SLOT DRIVE ADJUSTMENT SCREW IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4920-00-238-82472-1237 INTERCHANGEABLE
Wiring Harness Assembly
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
5110-00-255-6600 INTERCHANGEABLE
Reamer,hand
7350-01-038-40338050 INTERCHANGEABLE
Flask,pocket
Franmara, Inc
5905-01-244-8714514000-2 INTERCHANGEABLE
Resistor,fixed,film
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6240-01-281-874621237 INTERCHANGEABLE
Lamp,incandescent
Kerr Corporation
6550-01-363-7693R21237 INTERCHANGEABLE
Mineral Oil
Remel Inc.
5310-01-526-924521237 INTERCHANGEABLE
Nut,self-Locking,cap
Industrial Technologies and Services Llc
5930-01-679-649421237 INTERCHANGEABLE
Switch,pressure
World Magnetics Company Llc
Cross-Reference Index
Part NumberManufacturer
514000-2 Essex Industries Inc Div Manufacturing Division (USA)
8148650 Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
21237 Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
21237 PRIMARY Mission Systems Orchard Park Inc (USA)
Related Parts
4920-00-238-8247INTERCHANGEABLE
WIRING HARNESS ASSEMBLY
2-1237
5110-00-255-6600INTERCHANGEABLE
REAMER,HAND
7350-01-038-4033INTERCHANGEABLE
FLASK,POCKET
8050
5905-01-244-8714INTERCHANGEABLE
RESISTOR,FIXED,FILM
514000-2
6240-01-281-8746INTERCHANGEABLE
LAMP,INCANDESCENT
21237
6550-01-363-7693INTERCHANGEABLE
MINERAL OIL
R21237
5310-01-526-9245INTERCHANGEABLE
NUT,SELF-LOCKING,CAP
21237
5930-01-679-6494INTERCHANGEABLE
SWITCH,PRESSURE
21237

Frequently Asked Questions

What is NSN 1660-00-991-8039?

NSN 1660-00-991-8039 is a Valve,converter, manufactured by Mission Systems Orchard Park Inc, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-991-8039?

NSN 1660-00-991-8039 has 4 cross-referenced part numbers: 514000-2 (Essex Industries Inc Div Manufacturing Division), 8148650 (Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force), 21237 (Ingersoll-Rand Company Dba Ingersoll-Rand), 21237 (Mission Systems Orchard Park Inc).

What NSN replaces 1660-00-991-8039?

There are 8 known substitutes for 1660-00-991-8039: 4920-00-238-8247, 5110-00-255-6600, 7350-01-038-4033 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21237?

Key specifications for 21237: General Characteristics Item Description: THREE 1/8 IN. ANPT EXTERNAL CONNECTIONS;TWO 0.191 IN. DIA MTG HOLES;3.125 IN. LG EXCLUDING SETSCREW;2.250 IN. W;1.750 IN. DEEP O/A;SLOT DRIVE ADJUSTMENT SCREW IN. 1 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