PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3573AS278-1Washer,flat

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 5310-01-476-5104 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-476-5104 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-476-5104. Primary manufacturer part number: 3573AS278-1.
Features
  • Washer,flat — FSC 5310
  • 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
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-476-5104, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-476-5104
Primary Part Number3573AS278-1
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
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
Peripheral Shape StyleROUND
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-487-6255250-204 INTERCHANGEABLE
Screw-Fh Brass 2 64
Emcore Space & Navigation Corporation Div Space & Navigation
Cross-Reference Index
Part NumberManufacturer
3573AS278 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
3573AS278-1 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
25-0204 Trailer Component Manufacturing Inc. (USA)
3573AS278-1 Trailer Component Manufacturing Inc. (USA)
Related Parts
5305-00-487-6255INTERCHANGEABLE
SCREW-FH BRASS 2 64
250-204

Frequently Asked Questions

What is NSN 5310-01-476-5104?

NSN 5310-01-476-5104 is a Washer,flat, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-476-5104?

NSN 5310-01-476-5104 has 4 cross-referenced part numbers: 3573AS278 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 3573AS278-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 25-0204 (Trailer Component Manufacturing Inc.), 3573AS278-1 (Trailer Component Manufacturing Inc.).

What NSN replaces 5310-01-476-5104?

There is 1 known substitute for 5310-01-476-5104: 5305-00-487-6255. Verify interchangeability with system specifications before substitution.

What are the specifications of 3573AS278-1?

Key specifications for 3573AS278-1: 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. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com