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123549 — BRACKET,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

123549: BRACKET,MOUNTING.

The BRACKET,MOUNTING is a the manufacturer industrial component. Key specifications include material: STEEL, overall_width: 31.5 MILLIMETERS NOMINAL MM, overall_height: 31.0 MILLIMETERS NOMINAL MM, overall_length: 47.0 MILLIMETERS NOMINAL MM, mounting_hole_type: PLAIN, mounting_hole_diameter: 3.4 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-561-9575, 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
123549
NSN: 5340-01-561-9575
FSC: 5340 — Hardware, Commercial
CAGE: 2J641 — DH INSTRUMENTS INC. (USA)
SPECIFICATIONS
materialSTEEL
overall_width31.5 MILLIMETERS NOMINAL MM
overall_height31.0 MILLIMETERS NOMINAL MM
overall_length47.0 MILLIMETERS NOMINAL MM
mounting_hole_typePLAIN
mounting_hole_diameter3.4 MILLIMETERS NOMINAL MM
end_item_identificationH-53 HELICOPTER
part_name_assigned_by_controlling_agencyBRKT,MTG BAROMETER
NSN5340-01-561-9575
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 123549 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
•
MOUNTING HOLE DIAMETER: 3.4 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL
•
MOUNTING HOLE TYPE: PLAIN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT31.0 MILLIMETERS NOMINAL MM
MOUNTING HOLE DIAMETER3.4 MILLIMETERS NOMINAL MM
OVERALL LENGTH47.0 MILLIMETERS NOMINAL MM
OVERALL WIDTH31.5 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYBRKT,MTG BAROMETER
END ITEM IDENTIFICATIONH-53 HELICOPTER
MATERIALSTEEL
MOUNTING HOLE TYPEPLAIN
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
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 123549?
123549 is a BRACKET,MOUNTING.
What is the NSN for 123549?
123549 is cataloged in the U.S. Government catalog under NSN 5340-01-561-9575. 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.