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801277-3 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

801277-3: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: SQUARE, width: 1.635 INCHES MINIMUM AND 1.675 INCHES MAXIMUM IN, length: 1.635 INCHES MINIMUM AND 1.675 INCHES MAXIMUM IN, material: ALUMINUM ALLOY 6061, thickness: 0.125 INCHES NOMINAL IN, thread_size: .112IN-40 IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-389-7550, 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
801277-3
NSN: 5340-01-389-7550
FSC: 5340 — Hardware, Commercial
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
shapeSQUARE
width1.635 INCHES MINIMUM AND 1.675 INCHES MAXIMUM IN
length1.635 INCHES MINIMUM AND 1.675 INCHES MAXIMUM IN
materialALUMINUM ALLOY 6061
thickness0.125 INCHES NOMINAL IN
thread_size.112IN-40 IN
aperture_shapeROUND
aperture_diameter1.492 INCHES MINIMUM AND 1.508 INCHES MAXIMUM IN
features_providedAPERTURE
surface_treatmentCHROMATE
mounting_hole_typeTHREADED
mounting_hole_quantity4
NSN5340-01-389-7550
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 801277-3 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 QUANTITY: 4
•
LENGTH: 1.635 INCHES MINIMUM AND 1.675 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541, CL 1A MIL SPEC SINGLE TREATMENT RESPONSE A
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
•
SHAPE: SQUARE
•
APERTURE DIAMETER: 1.492 INCHES MINIMUM AND 1.508 INCHES MAXIMUM IN
•
FEATURES PROVIDED: APERTURE
•
THREAD SIZE: .112IN-40 IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY4
LENGTH1.635 INCHES MINIMUM AND 1.675 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541, CL 1A MIL SPEC SINGLE TREATMENT RESPONSE A
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE
SHAPESQUARE
APERTURE DIAMETER1.492 INCHES MINIMUM AND 1.508 INCHES MAXIMUM IN
FEATURES PROVIDEDAPERTURE
THREAD SIZE.112IN-40 IN
SCREW THREAD SERIES DESIGNATORNC
SURFACE TREATMENTCHROMATE
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 801277-3?
801277-3 is a PLATE,MOUNTING.
What is the NSN for 801277-3?
801277-3 is cataloged in the U.S. Government catalog under NSN 5340-01-389-7550. 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.