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4660639 — BRACKET,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4660639: BRACKET,MOUNTING.

The BRACKET,MOUNTING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_height: 4.200 INCHES NOMINAL IN, surface_treatment: ZINC, end_item_identification: 2320-01-518-7330, surface_treatment_document_and_classification: ASTM B833 FE/ZN 8 TYPE II ASSN STD ALL TREATMENT RESPONSES. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-536-0557, 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
4660639
NSN: 5340-01-536-0557
FSC: 5340 — Hardware, Commercial
CAGE: 6W728 — BAE SYSTEMS SURVIVABILITY SYSTEMS LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_height4.200 INCHES NOMINAL IN
surface_treatmentZINC
end_item_identification2320-01-518-7330
surface_treatment_document_and_classificationASTM B833 FE/ZN 8 TYPE II ASSN STD ALL TREATMENT RESPONSES
NSN5340-01-536-0557
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4660639 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B833 FE/ZN 8 TYPE II ASSN STD ALL TREATMENT RESPONSES
•
SURFACE TREATMENT: ZINC
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT4.200 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B833 FE/ZN 8 TYPE II ASSN STD ALL TREATMENT RESPONSES
SURFACE TREATMENTZINC
END ITEM IDENTIFICATION2320-01-518-7330
MATERIALSTEEL CORROSION RESISTING
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
4660639-000Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4660639?
4660639 is a BRACKET,MOUNTING.
What parts can replace 4660639?
There is 1 known substitute for 4660639: 4660639-000. Substitute compatibility should be verified for your specific system.
What is the NSN for 4660639?
4660639 is cataloged in the U.S. Government catalog under NSN 5340-01-536-0557. 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.