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PartsTable / COMPONENT / 5503A38
5503A38 ✓ 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

The KEY,SOCKET HEAD SCREW is a the manufacturer industrial component. Key specifications include shape: ROUND, height: 0.156 INCHES NOMINAL IN, material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, nut_type: PLAIN HEXAGON, body_width: 0.782 INCHES NOMINAL IN, root_width: 0.138 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-01-645-9433, 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
5503A38
NSN: 5120-01-645-9433
FSC: 5120
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
shapeROUND
height0.156 INCHES NOMINAL IN
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
nut_typePLAIN HEXAGON
body_width0.782 INCHES NOMINAL IN
root_width0.138 INCHES NOMINAL IN
body_height0.782 INCHES NOMINAL IN
body_length0.985 INCHES NOMINAL IN
design_typeSOLID
latch_styleSINGLE
end_diameter0.8120 INCHES NOMINAL IN
groove_width0.356 INCHES NOMINAL IN
NSN5120-01-645-9433
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available KEY,SOCKET HEAD SCREW TITLE COMPONENT PN 5503A38 MFR KEY,SOCKET HEAD SCREW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
18605Interchangeable
interchangeable cross-reference
interchangeable
AG34BInterchangeable
interchangeable cross-reference
interchangeable
MAG34BInterchangeable
interchangeable cross-reference
interchangeable
JHP33-82-1Interchangeable
interchangeable cross-reference
interchangeable
AA-1974Interchangeable
interchangeable cross-reference
interchangeable
DD-4905 REF NO 11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5503A38?
5503A38 is a KEY,SOCKET HEAD SCREW.
What parts can replace 5503A38?
There are 7 known substitutes for 5503A38: 18605, AG34B, MAG34B and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5503A38?
5503A38 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-01-645-9433. 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