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Technical Data Sheet
PartsTable / COMPONENT / 1657-20-4
1657-20-4 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

VALVE,REGULATING,FLUID PRESSURE. Key specifications include material: PLASTIC INSULATION, overall_height: 0.500 INCHES0.500 INCHES IN, overall_diameter: 0.172 INCHES0.172 INCHES IN, basic_shape_style: NONTUBULAR ROUNDNONTUBULAR ROUND, surface_treatment: TIN CONDUCTOR ACCOMMODATION SINGLE LAYER, mounting_method_style: PRESS FITPRESS FIT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5940-00-904-9624, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1657-20-4
NSN: 5940-00-904-9624
FSC: 5940
CAGE: 21355 — LTA/D-CEMCO INC DBA D-CEMCO (USA)
SPECIFICATIONS
materialPLASTIC INSULATION
overall_height0.500 INCHES0.500 INCHES IN
overall_diameter0.172 INCHES0.172 INCHES IN
basic_shape_styleNONTUBULAR ROUNDNONTUBULAR ROUND
surface_treatmentTIN CONDUCTOR ACCOMMODATION SINGLE LAYER
mounting_method_stylePRESS FITPRESS FIT
major_bushing_diameter0.172 INCHES0.172 INCHES IN
minor_bushing_diameter0.135 INCHES0.135 INCHES IN
conductor_accommodation_typeDOUBLE TURRET ALL ENDS
electrical_insulation_featureINSULATING MOUNTING BUSHINGINSULATING MOUNTING BUSHING
NSN5940-00-904-9624
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE,REGULATING,FLUID PRESSURE TITLE COMPONENT PN 1657-20-4 MFR VALVE,REGULATING,FLUID
KEY FEATURES
•
CONDUCTOR ACCOMMODATION TYPE: DOUBLE TURRET ALL ENDS
•
MINOR BUSHING DIAMETER: 0.135 INCHES0.135 INCHES IN
•
BASIC SHAPE STYLE: NONTUBULAR ROUNDNONTUBULAR ROUND
•
MOUNTING METHOD STYLE: PRESS FITPRESS FIT
•
ELECTRICAL INSULATION FEATURE: INSULATING MOUNTING BUSHINGINSULATING MOUNTING BUSHING
•
MATERIAL: PLASTIC INSULATION
•
SURFACE TREATMENT: TIN CONDUCTOR ACCOMMODATION SINGLE LAYER
TECHNICAL CHARACTERISTICS (FLIS)
CONDUCTOR ACCOMMODATION TYPEDOUBLE TURRET ALL ENDS
MINOR BUSHING DIAMETER0.135 INCHES0.135 INCHES IN
BASIC SHAPE STYLENONTUBULAR ROUNDNONTUBULAR ROUND
OVERALL HEIGHT0.500 INCHES0.500 INCHES IN
MOUNTING METHOD STYLEPRESS FITPRESS FIT
ELECTRICAL INSULATION FEATUREINSULATING MOUNTING BUSHINGINSULATING MOUNTING BUSHING
MATERIALPLASTIC INSULATION
SURFACE TREATMENTTIN CONDUCTOR ACCOMMODATION SINGLE LAYER
OVERALL DIAMETER0.172 INCHES0.172 INCHES IN
MATERIALCOPPER ALLOY CONDUCTOR ACCOMMODATION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
22-05Interchangeable
interchangeable cross-reference
interchangeable
GNBA17-5PC32Interchangeable
interchangeable cross-reference
interchangeable
166362-17Interchangeable
interchangeable cross-reference
interchangeable
150-570PC203Interchangeable
interchangeable cross-reference
interchangeable
150-573YPC203Interchangeable
interchangeable cross-reference
interchangeable
150-573KPC203Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1657-20-4?
1657-20-4 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 1657-20-4?
There are 19 known substitutes for 1657-20-4: 22-05, GNBA17-5PC32, 166362-17 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1657-20-4?
1657-20-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5940-00-904-9624. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026