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21569-1005-1 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

21569-1005-1: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: ALUMINUM ALLOY 6061, overall_height: 0.450 INCHES NOMINAL IN, special_features: MATERIAL HARDNESS RATING IS BRINELL 95, style_designator: IRREGULAR, body_inside_diameter: 0.254 INCHES NOMINAL IN, body_outside_diameter: 0.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-475-1347, 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
21569-1005-1
NSN: 5340-01-475-1347
FSC: 5340 — Hardware, Commercial
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
overall_height0.450 INCHES NOMINAL IN
special_featuresMATERIAL HARDNESS RATING IS BRINELL 95
style_designatorIRREGULAR
body_inside_diameter0.254 INCHES NOMINAL IN
body_outside_diameter0.875 INCHES NOMINAL IN
material_document_and_classificationQQ-A-200/8, 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-475-1347
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21569-1005-1 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BODY OUTSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: IRREGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-200/8, 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE
•
BODY INSIDE DIAMETER: 0.254 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 6061
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.450 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
STYLE DESIGNATORIRREGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/8, 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE
BODY INSIDE DIAMETER0.254 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL HARDNESS RATING IS BRINELL 95
MATERIALALUMINUM ALLOY 6061
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
21569-401 FIND 5Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21569-1005-1?
21569-1005-1 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 21569-1005-1?
There is 1 known substitute for 21569-1005-1: 21569-401 FIND 5. Substitute compatibility should be verified for your specific system.
What is the NSN for 21569-1005-1?
21569-1005-1 is cataloged in the U.S. Government catalog under NSN 5340-01-475-1347. 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.