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5209551 — RETAINER,PISTON

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

5209551: RETAINER,PISTON.

The RETAINER,PISTON is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: BRONZE BAR,QQ-B-728,CL B,HARD,2.062 IN. LG,1.250 IN.

INSIDE DIA,2.000 IN. OUTSIDE DIA IN. This part is cataloged in the U.S.

Government catalog under NSN 1440-01-183-1571, 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
5209551
NSN: 1440-01-183-1571
FSC: 1440 — Launchers, Guided Missile
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
general_characteristics_item_descriptionBRONZE BAR,QQ-B-728,CL B,HARD,2.062 IN. LG,1.250 IN. INSIDE DIA,2.000 IN. OUTSIDE DIA IN
NSN1440-01-183-1571
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RETAINER,PISTON TITLE COMPONENT PN 5209551 MFR RETAINER,PISTON
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: BRONZE BAR,QQ-B-728,CL B,HARD,2.062 IN. LG,1.250 IN. INSIDE DIA,2.000 IN. OUTSIDE DIA IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONBRONZE BAR,QQ-B-728,CL B,HARD,2.062 IN. LG,1.250 IN. INSIDE DIA,2.000 IN. OUTSIDE DIA IN
OTHER ITEMS IN FSC 1440 — Launchers, Guided Missile
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1440-00-006-6410 1440-00-034-4210 1440-00-055-6740 1440-00-072-5945 1440-00-075-7878 1440-00-344-1590 1440-00-349-2368 1440-00-349-9202
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 5209551?
5209551 is a RETAINER,PISTON.
What is the NSN for 5209551?
5209551 is cataloged in the U.S. Government catalog under NSN 1440-01-183-1571. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.