PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

416618-7Washer,lock

Raytheon Company Dba Raytheon · NSN 5310-01-550-6497 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-550-6497 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-550-6497. Primary manufacturer part number: 416618-7.
Features
  • Washer,lock — FSC 5310
  • Material Thickness: 0.047 INCHES MINIMUM IN
  • Outside Diameter: 0.489 INCHES MAXIMUM IN
  • Hole Diameter: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
  • Surface Treatment: PASSIVATE OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material: STEEL COMP 302 OR STEEL COMP 304 OVERALL
  • Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 304 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-550-6497, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 8 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-550-6497
Primary Part Number416618-7
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Material Thickness0.047 INCHES MINIMUM IN
Outside Diameter0.489 INCHES MAXIMUM IN
Hole Diameter0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
MaterialSTEEL COMP 302 OR STEEL COMP 304 OVERALL
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Hardness Rating35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-262-3576 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
416618-7 PRIMARY Raytheon Company Dba Raytheon (USA)
Related Parts
5310-00-262-3576INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-01-550-6497?

NSN 5310-01-550-6497 is a Washer,lock, manufactured by Raytheon Company Dba Raytheon, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-550-6497?

NSN 5310-01-550-6497 has 1 cross-referenced part number: 416618-7 (Raytheon Company Dba Raytheon).

What NSN replaces 5310-01-550-6497?

There is 1 known substitute for 5310-01-550-6497: 5310-00-262-3576. Verify interchangeability with system specifications before substitution.

What are the specifications of 416618-7?

Key specifications for 416618-7: Material Thickness: 0.047 INCHES MINIMUM IN; Outside Diameter: 0.489 INCHES MAXIMUM IN; Hole Diameter: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN; Surface Treatment: PASSIVATE OVERALL. 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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