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PartsTable / COMPONENT / FRS639843
FRS639843 ✓ 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

INSTALLATION TOOL,RETAINING RING. Key specifications include cushion: NOT INCLUDED, material: STEEL OVERALL, body_width: 0.900 INCHES MAXIMUM IN, head_style: THUMB NO. 4, body_height: 0.600 INCHES MAXIMUM IN, body_length: 1.000 INCHES MAXIMUM 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 5120-00-490-5581, 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
FRS639843
NSN: 5120-00-490-5581
FSC: 5120
CAGE: U1918 — MISSION SYSTEMS WIMBORNE LIMITED DIV COBHAM MISSION SYSTEMS WIMBORNE LTD (GBR)
SPECIFICATIONS
cushionNOT INCLUDED
materialSTEEL OVERALL
body_width0.900 INCHES MAXIMUM IN
head_styleTHUMB NO. 4
body_height0.600 INCHES MAXIMUM IN
body_length1.000 INCHES MAXIMUM IN
head_height0.812 INCHES NOMINAL IN
mounting_padNOT INCLUDED
shaft_length2.000 INCHES NOMINAL IN
thread_class2A A
bore_diameter3.5000 INCHES NOMINAL IN
largest_width0.281 INCHES SINGLE END IN
NSN5120-00-490-5581
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available INSTALLATION TOOL,RETAINING RING TITLE COMPONENT PN FRS639843 MFR INSTALLATION TOOL,RETA
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
E45Interchangeable
interchangeable cross-reference
interchangeable
T26Interchangeable
interchangeable cross-reference
interchangeable
LR45Interchangeable
interchangeable cross-reference
interchangeable
SCD1967Interchangeable
interchangeable cross-reference
interchangeable
MS21314-13Interchangeable
interchangeable cross-reference
interchangeable
PTT26Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FRS639843?
FRS639843 is a INSTALLATION TOOL,RETAINING RING.
What parts can replace FRS639843?
There are 16 known substitutes for FRS639843: E45, T26, LR45 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FRS639843?
FRS639843 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-00-490-5581. 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