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12-189663-1 — BRACKET,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12-189663-1: BRACKET,MOUNTING.

The BRACKET,MOUNTING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_width: 2.250 INCHES NOMINAL IN, overall_length: 5.000 INCHES NOMINAL IN, surface_treatment: PASSIVATE, end_item_identification: DIRECTION FINDER AN/MRD 505. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-407-1950, 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
12-189663-1
NSN: 5340-01-407-1950
FSC: 5340 — Hardware, Commercial
CAGE: 28815 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_width2.250 INCHES NOMINAL IN
overall_length5.000 INCHES NOMINAL IN
surface_treatmentPASSIVATE
end_item_identificationDIRECTION FINDER AN/MRD 505
NSN5340-01-407-1950
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12-189663-1 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
•
SURFACE TREATMENT: PASSIVATE
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
OVERALL LENGTH5.000 INCHES NOMINAL IN
OVERALL WIDTH2.250 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE
END ITEM IDENTIFICATIONDIRECTION FINDER AN/MRD 505
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12-189663-1?
12-189663-1 is a BRACKET,MOUNTING.
What is the NSN for 12-189663-1?
12-189663-1 is cataloged in the U.S. Government catalog under NSN 5340-01-407-1950. 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.