PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

22-37Gage,pressure,dial Indicating

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 6685-00-301-9970 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-301-9970 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-301-9970. Primary manufacturer part number: 22-37.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Adjustability: NONADJUSTABLE
  • Bolt Circle Diameter: 3.182 INCHES NOMINAL IN
  • Mounting Hole Quantity: 4
  • Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CASE
  • Material: STEEL ACTUATING ELEMENT
  • Surface Treatment: ANODIZE CASE
  • Connection Quantity: 1
Applications
  • Applications requiring Steel Actuating Element construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-301-9970, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-301-9970
Primary Part Number22-37
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusACTIVE
AdjustabilityNONADJUSTABLE
Bolt Circle Diameter3.182 INCHES NOMINAL IN
Mounting Hole Quantity4
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CASE
MaterialSTEEL ACTUATING ELEMENT
Surface TreatmentANODIZE CASE
Connection Quantity1
Mounting MethodFLUSH PANEL
Actuation TypeBOURDON TUBE
Illuminative MethodANY ACCEPTABLE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
MaterialGLASS SHEET PROTECTIVE CRYSTAL
Scale Smallest Increment100.000 POUNDS PER SQUARE INCH (PSI) LBS
Scale Range+0.000 TO 5000.000 POUNDS PRESSURE PER SQUARE INCH LBS
Connection Size0.357 IN. DIA,0.400 IN.DEEP IN
Material Document and ClassificationDD-G-451C,TYPE II,CLASS 1,QUALITY AA FED SPEC SINGLE MATERIAL RESPONSE PROTECTIVE CRYSTAL
Connection TypeEXTERNAL
Scale NamePRESSURE
Graduation Unit1000.000 POUNDS PER SQUARE INCH LBS
Pointer TypeINDICATING
Scale TypeSINGLE
Connection LocationBACK, CENTER
Dial Size2-1/4 IN. DIA IN
Pointer ColorBLACK
MaterialALUMINUM ALLOY 6061 CASE
Material Document and ClassificationAMS-QQ-A-200/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE CASE
Mounting Hole Diameter0.169 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6660-00-075-6666 INTERCHANGEABLE
Barometer,aneroid
4520-00-143-92152237 INTERCHANGEABLE
Heating Element,electrical,nonim
Duke Mfg Co
5310-00-208-8892 INTERCHANGEABLE
Nut,plain,round
5330-00-252-66392237 INTERCHANGEABLE
Gasket
Bae Systems Land & Armaments L.p.
5365-00-350-54425824FX INTERCHANGEABLE
Plug,machine Thread
Oshkosh Defense Llc
6640-00-404-50001220-4L INTERCHANGEABLE
Bottle,aspirator
Corning Incorporated Div Life Sci, Opt Fiber, Environ, Specialty Mtl, R&d, Mte
5905-00-442-1935 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
5950-00-646-2278 INTERCHANGEABLE
Transformer,power
2940-00-857-1982101237 INTERCHANGEABLE
Filter Element,intake Air Cleane
Cummins Filtration Inc.
6150-01-066-82542237 INTERCHANGEABLE
Cable Assembly,power,electrical
Mission Systems Davenport Inc.
Cross-Reference Index
Part NumberManufacturer
22-37 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
22-31 Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
2250-017-00 Qed Inc Dba Qed Inc (USA)
68J698014-103 The Boeing Company Div Defense (USA)
Related Parts
6660-00-075-6666INTERCHANGEABLE
BAROMETER,ANEROID
4520-00-143-9215INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
2237
5310-00-208-8892INTERCHANGEABLE
NUT,PLAIN,ROUND
5330-00-252-6639INTERCHANGEABLE
GASKET
2237
5365-00-350-5442INTERCHANGEABLE
PLUG,MACHINE THREAD
5824FX
6640-00-404-5000INTERCHANGEABLE
BOTTLE,ASPIRATOR
1220-4L
5905-00-442-1935INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5950-00-646-2278INTERCHANGEABLE
TRANSFORMER,POWER
2940-00-857-1982INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
101237
6150-01-066-8254INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
2237
5945-01-185-5264INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
3040-01-239-9187INTERCHANGEABLE
PAWL
2237

Frequently Asked Questions

What is NSN 6685-00-301-9970?

NSN 6685-00-301-9970 is a Gage,pressure,dial Indicating, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-301-9970?

NSN 6685-00-301-9970 has 4 cross-referenced part numbers: 22-37 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 22-31 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 2250-017-00 (Qed Inc Dba Qed Inc), 68J698014-103 (The Boeing Company Div Defense).

What NSN replaces 6685-00-301-9970?

There are 12 known substitutes for 6685-00-301-9970: 6660-00-075-6666, 4520-00-143-9215, 5310-00-208-8892 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 22-37?

Key specifications for 22-37: Adjustability: NONADJUSTABLE; Bolt Circle Diameter: 3.182 INCHES NOMINAL IN; Mounting Hole Quantity: 4; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE CASE. 30 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