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204066 — BRACKET,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

204066: BRACKET,MOUNTING.

The BRACKET,MOUNTING is a the manufacturer industrial component. Key specifications include material: ALUMINUM, hole_diameter: 0.187 INCHES NOMINAL IN, body_thickness: 0.066 INCHES NOMINAL IN, flange_thickness: 0.066 INCHES NOMINAL IN, outside_diameter: 3.500 INCHES NOMINAL IN, surface_treatment: PAINT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-513-8259, 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
204066
NSN: 5340-00-513-8259
NIINs: 005138259, 015967231
FSC: 5340 — Hardware, Commercial
CAGE: 92878 — HDT EXPEDITIONARY SYSTEMS INC (USA)
SPECIFICATIONS
materialALUMINUM
hole_diameter0.187 INCHES NOMINAL IN
body_thickness0.066 INCHES NOMINAL IN
flange_thickness0.066 INCHES NOMINAL IN
outside_diameter3.500 INCHES NOMINAL IN
surface_treatmentPAINT
securing_device_typeTHREADED FASTENER
peripheral_shape_styleROUND, ONE HOLE
first_recess_inside_height0.125 INCHES NOMINAL IN
cross-sectional_shape_styleRECESS, SAME SHAPE AS THE PERIPHERY
mounting_opening_shape_styleUNTHREADED HOLE
bolt_hole_centerline_to_nearest_edge_distance1.750 INCHES NOMINAL IN
NSN5340-00-513-8259
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 204066 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
•
FLANGE THICKNESS: 0.066 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.125 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
CROSS-SECTIONAL SHAPE STYLE: RECESS, SAME SHAPE AS THE PERIPHERY
•
OUTSIDE DIAMETER: 3.500 INCHES NOMINAL IN
•
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE: 1.750 INCHES NOMINAL IN
•
SECURING DEVICE TYPE: THREADED FASTENER
•
SURFACE TREATMENT: PAINT
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS0.066 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.125 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLERECESS, SAME SHAPE AS THE PERIPHERY
OUTSIDE DIAMETER3.500 INCHES NOMINAL IN
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE1.750 INCHES NOMINAL IN
SECURING DEVICE TYPETHREADED FASTENER
SURFACE TREATMENTPAINT
PERIPHERAL SHAPE STYLEROUND, ONE HOLE
MATERIALALUMINUM
SUBSTITUTES & CROSS-REFERENCES 2
890132LIST517ITEM3Reference document
Same NSN cross-reference
Reference document — Secondary reference
890132RGPC204066Reference 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 204066?
204066 is a BRACKET,MOUNTING.
What parts can replace 204066?
There are 2 known substitutes for 204066: 890132LIST517ITEM3, 890132RGPC204066. Substitute compatibility should be verified for your specific system.
What is the NSN for 204066?
204066 is cataloged in the U.S. Government catalog under NSN 5340-00-513-8259. 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.