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U83 ✓ 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 LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.312 INCHES NOMINAL IN, thread_provision: UNTHREADED, largest_outside_width: 0.750 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-356-1166, 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
U83
NSN: 2805-00-356-1166
FSC: 2805
CAGE: 77535 — ASSOCIATED SPRING US, LLC DIV CORRY (USA)
SPECIFICATIONS
materialSTEEL
overall_height0.312 INCHES NOMINAL IN
thread_provisionUNTHREADED
largest_outside_width0.750 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
NSN2805-00-356-1166
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOCK,VALVE SPRING RETAINER TITLE COMPONENT PN U83 MFR LOCK,VALVE SPRING RETA
KEY FEATURES
•
THREAD PROVISION: UNTHREADED
•
LARGEST OUTSIDE WIDTH: 0.750 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
THREAD PROVISIONUNTHREADED
LARGEST OUTSIDE WIDTH0.750 INCHES NOMINAL IN
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
OVERALL HEIGHT0.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
IPD2A4429Interchangeable
interchangeable cross-reference
interchangeable
17KP439Interchangeable
interchangeable cross-reference
interchangeable
R118Interchangeable
interchangeable cross-reference
interchangeable
7311954Interchangeable
interchangeable cross-reference
interchangeable
75102Interchangeable
interchangeable cross-reference
interchangeable
H1098MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is U83?
U83 is a LOCK,VALVE SPRING RETAINER.
What parts can replace U83?
There are 24 known substitutes for U83: IPD2A4429, 17KP439, R118 and 21 more. Substitute compatibility should be verified for your specific system.
Is U83 still available?
U83 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026