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Technical Data Sheet
PartsTable / COMPONENT / 3573AS278-1
3573AS278-1 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, hole_diameter: 1.172 INCHES MINIMUM AND 1.204 INCHES MAXIMUM IN, overall_diameter: 2.484 INCHES MINIMUM AND 2.516 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, peripheral_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-476-5104, 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
3573AS278-1
NSN: 5310-01-476-5104
FSC: 5310
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
hole_diameter1.172 INCHES MINIMUM AND 1.204 INCHES MAXIMUM IN
overall_diameter2.484 INCHES MINIMUM AND 2.516 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationFLOOD LIGHT
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM A108,1020-1035 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TYPE II,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-476-5104
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3573AS278-1 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE II,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108,1020-1035 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HOLE DIAMETER: 1.172 INCHES MINIMUM AND 1.204 INCHES MAXIMUM IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 2.484 INCHES MINIMUM AND 2.516 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
THICKNESS: 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE II,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108,1020-1035 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.172 INCHES MINIMUM AND 1.204 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER2.484 INCHES MINIMUM AND 2.516 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THICKNESS0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONFLOOD LIGHT
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
F-0-204Interchangeable
Screw-Fh Brass 2 64
interchangeable
250-204Interchangeable
Screw-Fh Brass 2 64
interchangeable
3573AS278Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3573AS278-1?
3573AS278-1 is a WASHER,FLAT.
What parts can replace 3573AS278-1?
There are 3 known substitutes for 3573AS278-1: F-0-204, 250-204, 3573AS278. Substitute compatibility should be verified for your specific system.
What is the NSN for 3573AS278-1?
3573AS278-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-476-5104. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026