PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3260Washer,seal

Heyco Inc Dba Heyco Products · NSN 5310-01-523-8968 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-523-8968 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-523-8968. Primary manufacturer part number: 3260.
Features
  • Washer,seal — FSC 5310
  • Hole Diameter: 0.820 INCHES NOMINAL0.820 INCHES NOMINAL IN
  • Outside Diameter: 1.240 INCHES NOMINAL1.240 INCHES NOMINAL IN
  • Material: RUBBER OVERALL
  • Style Designator: CONCAVE
  • 1 verified cross-reference
  • Primary manufacturer: Heyco Inc Dba Heyco Products
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
General Description

The Washer,seal, cataloged under National Stock Number 5310-01-523-8968, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Heyco Inc Dba Heyco Products. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-523-8968
Primary Part Number3260
Item NameWasher,seal
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHeyco Inc Dba Heyco Products
StatusACTIVE
Hole Diameter0.820 INCHES NOMINAL0.820 INCHES NOMINAL IN
Outside Diameter1.240 INCHES NOMINAL1.240 INCHES NOMINAL IN
MaterialRUBBER OVERALL
Style DesignatorCONCAVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5930-00-075-990310105385-2 INTERCHANGEABLE
Switch,toggle
Us Army Aviation and Missile Command
4720-00-181-34694142295 INTERCHANGEABLE
Hose Assembly,metallic
The Boeing Company
5120-00-243-73375120-00-243-7337 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
General Services Administration Federal Supply Service
4920-00-469-84913260 INTERCHANGEABLE
Shaft Assembly,fan
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
3030-00-528-4532 INTERCHANGEABLE
Belt,v
3120-00-808-5627 INTERCHANGEABLE
Bearing,sleeve
5935-01-014-8502 INTERCHANGEABLE
Plug,tip
5120-01-020-2888 INTERCHANGEABLE
Bit,screwdriver
4920-01-102-52303260 INTERCHANGEABLE
Ring,anchor
Marvel Manufacturing Co Div the Marvel Manufacturing Company
5355-01-316-8311 INTERCHANGEABLE
Knob
Cross-Reference Index
Part NumberManufacturer
3260 PRIMARY Heyco Inc Dba Heyco Products (USA)
Related Parts
5930-00-075-9903INTERCHANGEABLE
SWITCH,TOGGLE
10105385-2
4720-00-181-3469INTERCHANGEABLE
HOSE ASSEMBLY,METALLIC
4142295
5120-00-243-7337INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
5120-00-243-7337
4920-00-469-8491INTERCHANGEABLE
SHAFT ASSEMBLY,FAN
3260
3030-00-528-4532INTERCHANGEABLE
BELT,V
3120-00-808-5627INTERCHANGEABLE
BEARING,SLEEVE
5935-01-014-8502INTERCHANGEABLE
PLUG,TIP
5120-01-020-2888INTERCHANGEABLE
BIT,SCREWDRIVER
4920-01-102-5230INTERCHANGEABLE
RING,ANCHOR
3260
5355-01-316-8311INTERCHANGEABLE
KNOB
6515-01-463-6436INTERCHANGEABLE
DILATOR,ESOPHAGEAL
3260
5315-01-476-0369INTERCHANGEABLE
PIN,SPRING
3260

Frequently Asked Questions

What is NSN 5310-01-523-8968?

NSN 5310-01-523-8968 is a Washer,seal, manufactured by Heyco Inc Dba Heyco Products, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-523-8968?

NSN 5310-01-523-8968 has 1 cross-referenced part number: 3260 (Heyco Inc Dba Heyco Products).

What NSN replaces 5310-01-523-8968?

There are 12 known substitutes for 5310-01-523-8968: 5930-00-075-9903, 4720-00-181-3469, 5120-00-243-7337 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3260?

Key specifications for 3260: Hole Diameter: 0.820 INCHES NOMINAL0.820 INCHES NOMINAL IN; Overall Height: 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN; Special Features: RUBBER IS THERMOPLASTICRUBBER IS THERMOPLASTIC; Outside Diameter: 1.240 INCHES NOMINAL1.240 INCHES NOMINAL IN. 6 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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