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12489406 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12489406: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER AND STEEL, shank_length: 1.750 INCHES NOMINAL IN, overall_height: 4.410 INCHES NOMINAL IN, style_designator: TIPPED THREADED STUD, end_item_identification: 2330011173280, SEMITRAILER, LOW BED, outside/top_flange_diameter: 3.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-516-6975, 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
12489406
NSN: 5340-01-516-6975
FSC: 5340 — Hardware, Commercial
CAGE: 01685 — AEROFAB COMPANY, INC. (USA)
SPECIFICATIONS
materialRUBBER AND STEEL
shank_length1.750 INCHES NOMINAL IN
overall_height4.410 INCHES NOMINAL IN
style_designatorTIPPED THREADED STUD
end_item_identification2330011173280, SEMITRAILER, LOW BED
outside/top_flange_diameter3.000 INCHES NOMINAL IN
NSN5340-01-516-6975
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12489406 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
•
OUTSIDE/TOP FLANGE DIAMETER: 3.000 INCHES NOMINAL IN
•
SHANK LENGTH: 1.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: TIPPED THREADED STUD
•
MATERIAL: RUBBER AND STEEL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT4.410 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER3.000 INCHES NOMINAL IN
SHANK LENGTH1.750 INCHES NOMINAL IN
STYLE DESIGNATORTIPPED THREADED STUD
END ITEM IDENTIFICATION2330011173280, SEMITRAILER, LOW BED
MATERIALRUBBER AND STEEL
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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12489406?
12489406 is a BUMPER.
What is the NSN for 12489406?
12489406 is cataloged in the U.S. Government catalog under NSN 5340-01-516-6975. 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.