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PartsTable / COMPONENT / 388-021
388-021 ✓ Verified by PartsTable
EMSA · COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The POST CONNECTOR,AIRC is a EMSA industrial component. Key specifications include material: COPPER ALLOY CONTACT, pin_length: 0.250 INCHES NOMINAL IN, pin_diameter: 0.050 INCHES NOMINAL IN, butt_diameter: 6.250 INCHES NOMINAL IN, overall_length: 0.360 INCHES NOMINAL IN, mounting_method: FORCE 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 4920-01-571-8266, 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
388-021
NSN: 4920-01-571-8266
FSC: 4920
CAGE: 74QK6 — AJAX TOCCO MAGNETHERMIC CORPORATION DBA PINES ENGINEERING DIV PINES ENGINEERING (USA)
SPECIFICATIONS
materialCOPPER ALLOY CONTACT
pin_length0.250 INCHES NOMINAL IN
pin_diameter0.050 INCHES NOMINAL IN
butt_diameter6.250 INCHES NOMINAL IN
overall_length0.360 INCHES NOMINAL IN
mounting_methodFORCE FIT
overall_diameter0.093 INCHES NOMINAL IN
special_features2 GM SDRAM, 8 GB FLASH, MEMORY CARD, USB, ETHERNET GB
style_designatorPIN CONTACT
cylinder_diameter2.250 INCHES NOMINAL IN
precious_materialGOLD AND SILVER
surface_treatmentGOLD AND SILVER BODY
NSN4920-01-571-8266
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: EMSA POST CONNECTOR,AIRC TITLE COMPONENT PN 388-021 MFR EMSA POST CONNECTOR,AIRC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
CP4Interchangeable
interchangeable cross-reference
interchangeable
73-805370-1Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-780Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 388-021?
388-021 is a POST CONNECTOR,AIRC manufactured by EMSA.
What parts can replace 388-021?
There are 3 known substitutes for 388-021: CP4, 73-805370-1, MIL-T-780. Substitute compatibility should be verified for your specific system.
What is the NSN for 388-021?
388-021 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4920-01-571-8266. 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