PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5604-18Washer,shouldered

Seastrom Manufacturing Co Inc · NSN 5310-00-566-0875 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-566-0875 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-566-0875. Primary manufacturer part number: 5604-18.
Features
  • Washer,shouldered — FSC 5310
  • Material Document and Classification: MIL-F-1148,GR CH MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Shoulder Diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
  • Material: FIBER OVERALL
  • Material Thickness: 0.011 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN
  • Hole Diameter: 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
  • Outside Diameter: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
  • Shoulder Height: 0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Fiber Overall construction
General Description

The Washer,shouldered, cataloged under National Stock Number 5310-00-566-0875, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5310-00-566-0875
Primary Part Number5604-18
Item NameWasher,shouldered
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSeastrom Manufacturing Co Inc
StatusACTIVE
Material Document and ClassificationMIL-F-1148,GR CH MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Shoulder Diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
MaterialFIBER OVERALL
Material Thickness0.011 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN
Hole Diameter0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
Outside Diameter0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Shoulder Height0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Hardness Rating50.0 ROCKWELL R MINIMUM
Style DesignatorSHOULDERED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5950-00-645-071116556 INTERCHANGEABLE
Transformer,audio Frequency
Essex Brownell Inc. Div Essex Group Inc
Cross-Reference Index
Part NumberManufacturer
860197-103 Litton Systems Inc. Div Navigation Systems Division (USA)
860197-103 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
5604-18 PRIMARY Seastrom Manufacturing Co Inc (USA)
Related Parts
5950-00-645-0711INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
16556

Frequently Asked Questions

What is NSN 5310-00-566-0875?

NSN 5310-00-566-0875 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 5310-00-566-0875?

NSN 5310-00-566-0875 has 3 cross-referenced part numbers: 860197-103 (Litton Systems Inc. Div Navigation Systems Division), 860197-103 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 5604-18 (Seastrom Manufacturing Co Inc).

What NSN replaces 5310-00-566-0875?

There is 1 known substitute for 5310-00-566-0875: 5950-00-645-0711. Verify interchangeability with system specifications before substitution.

What are the specifications of 5604-18?

Key specifications for 5604-18: Material Document and Classification: MIL-F-1148,GR CH MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Shoulder Diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Material: FIBER OVERALL; Material Thickness: 0.011 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN. 9 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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