PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5609-21Washer,shouldered

Seastrom Manufacturing Co Inc · NSN 5310-00-103-3032 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-103-3032 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-103-3032. Primary manufacturer part number: 5609-21.
Features
  • Washer,shouldered — FSC 5310
  • Material Thickness: 0.035 INCHES NOMINAL IN
  • Style Designator: SHOULDERED
  • Hole Diameter: 0.194 INCHES NOMINAL IN
  • Shoulder Height: 0.032 INCHES NOMINAL IN
  • Outside Diameter: 0.379 INCHES NOMINAL IN
  • Shoulder Diameter: 0.251 INCHES NOMINAL IN
  • Material Document and Classification: AMS 3650 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,shouldered, cataloged under National Stock Number 5310-00-103-3032, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Seastrom Manufacturing Co Inc. Government technical data includes 7 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-103-3032
Primary Part Number5609-21
Item NameWasher,shouldered
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSeastrom Manufacturing Co Inc
StatusACTIVE
Material Thickness0.035 INCHES NOMINAL IN
Style DesignatorSHOULDERED
Hole Diameter0.194 INCHES NOMINAL IN
Shoulder Height0.032 INCHES NOMINAL IN
Outside Diameter0.379 INCHES NOMINAL IN
Shoulder Diameter0.251 INCHES NOMINAL IN
Material Document and ClassificationAMS 3650 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-00-194-3737 INTERCHANGEABLE
Packing,preformed
2915-00-716-2609560921 INTERCHANGEABLE
Screw,adjusting
Hamilton Sundstrand Corporation Dba Collins Aerospace
Cross-Reference Index
Part NumberManufacturer
5609-21 PRIMARY Seastrom Manufacturing Co Inc (USA)
SMB502967 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
Related Parts
5330-00-194-3737INTERCHANGEABLE
PACKING,PREFORMED
2915-00-716-2609INTERCHANGEABLE
SCREW,ADJUSTING
560921

Frequently Asked Questions

What is NSN 5310-00-103-3032?

NSN 5310-00-103-3032 is a Washer,shouldered, manufactured by Seastrom Manufacturing Co Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-103-3032?

NSN 5310-00-103-3032 has 2 cross-referenced part numbers: 5609-21 (Seastrom Manufacturing Co Inc), SMB502967 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir).

What NSN replaces 5310-00-103-3032?

There are 2 known substitutes for 5310-00-103-3032: 5330-00-194-3737, 2915-00-716-2609. Verify interchangeability with system specifications before substitution.

What are the specifications of 5609-21?

Key specifications for 5609-21: Material Thickness: 0.035 INCHES NOMINAL IN; Style Designator: SHOULDERED; Hole Diameter: 0.194 INCHES NOMINAL IN; Shoulder Height: 0.032 INCHES NOMINAL IN. 7 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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