PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W3Washer,flat

Elbitamerica, Inc. · NSN 5310-00-531-1565 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-531-1565 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-531-1565. Primary manufacturer part number: W3.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: ASTM B124 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: COPPER ALLOY OVERALL
  • Thickness: 0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-531-1565, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Elbitamerica, Inc.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-531-1565
Primary Part NumberW3
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerElbitamerica, Inc.
StatusACTIVE
Material Document and ClassificationASTM B124 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialCOPPER ALLOY OVERALL
Thickness0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Hole Diameter0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Overall Diameter0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-156-18324F9364 INTERCHANGEABLE
Bearing,ball,thrust
Caterpillar Inc Div Caterpillar Defense
3895-00-247-7586 INTERCHANGEABLE
Roller,towed,sheepsfoot
6520-00-515-6050500-57522 INTERCHANGEABLE
Clamp,rubber Dam,dental
Heraeus Kulzer Llc
5920-00-866-2477W3 INTERCHANGEABLE
Fuse,plug
Cooper Bussmann, Llc Dba Cooper Industries
5995-01-014-0631B650-W57 INTERCHANGEABLE
Cable Assembly,special Purpose,e
National Weather Service Dba National Weather Service Ohd1 Div Office of Operational Systems
5310-01-149-9645W3 INTERCHANGEABLE
Washer,flat
Sony Electronics Inc
3020-01-191-4396W3 INTERCHANGEABLE
Gear,helical
Nugier Press Company,inc.
5340-01-259-3953 INTERCHANGEABLE
Cap-Plug,protective,dust and Moi
5811-01-266-9806W3 INTERCHANGEABLE
Cable Assy
Advance Computer Communications Dba Acc
5330-01-308-5880W3 INTERCHANGEABLE
Gasket
Emglo Products Corp
Cross-Reference Index
Part NumberManufacturer
500733-2 Smiths Detection Inc. Dba Smiths Detection Inc Casc (USA)
W3 PRIMARY Elbitamerica, Inc. (USA)
Related Parts
3110-00-156-1832INTERCHANGEABLE
BEARING,BALL,THRUST
4F9364
3895-00-247-7586INTERCHANGEABLE
ROLLER,TOWED,SHEEPSFOOT
6520-00-515-6050INTERCHANGEABLE
CLAMP,RUBBER DAM,DENTAL
500-57522
5920-00-866-2477INTERCHANGEABLE
FUSE,PLUG
W3
5995-01-014-0631INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
B650-W57
5310-01-149-9645INTERCHANGEABLE
WASHER,FLAT
W3
3020-01-191-4396INTERCHANGEABLE
GEAR,HELICAL
W3
5340-01-259-3953INTERCHANGEABLE
CAP-PLUG,PROTECTIVE,DUST AND MOI
5811-01-266-9806INTERCHANGEABLE
CABLE ASSY
W3
5330-01-308-5880INTERCHANGEABLE
GASKET
W3

Frequently Asked Questions

What is NSN 5310-00-531-1565?

NSN 5310-00-531-1565 is a Washer,flat, manufactured by Elbitamerica, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-531-1565?

NSN 5310-00-531-1565 has 2 cross-referenced part numbers: 500733-2 (Smiths Detection Inc. Dba Smiths Detection Inc Casc), W3 (Elbitamerica, Inc.).

What NSN replaces 5310-00-531-1565?

There are 10 known substitutes for 5310-00-531-1565: 3110-00-156-1832, 3895-00-247-7586, 6520-00-515-6050 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W3?

Key specifications for W3: Material Document and Classification: ASTM B124 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: COPPER ALLOY OVERALL; Thickness: 0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN; Peripheral Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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