PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N404P9C6Washer,lock

Lockheed Martin Corporation Div Rms · NSN 5310-00-676-8573 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-676-8573 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-676-8573. Primary manufacturer part number: N404P9C6.
Features
  • Washer,lock — FSC 5310
  • Material: STEEL OVERALL
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Outside Diameter: 0.215 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
  • Material Thickness: 0.016 INCHES NOMINAL IN
  • Hole Diameter: 0.102 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
  • Style Designator: FLAT INTERNAL TEETH
  • 4 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-676-8573, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-676-8573
Primary Part NumberN404P9C6
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms
StatusCANCELLED
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Outside Diameter0.215 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
Material Thickness0.016 INCHES NOMINAL IN
Hole Diameter0.102 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
Style DesignatorFLAT INTERNAL TEETH
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5310-00-058-3730824637-2 INTERCHANGEABLE
Washer,lock
Lockheed Martin Corporation Div Rms - Mitchel Field
5330-00-111-30661-20300 INTERCHANGEABLE
Gasket
Mission Systems Davenport Inc.
5310-00-930-8787 INTERCHANGEABLE
Washer,lock
1560-00-943-500265206-01009-105 INTERCHANGEABLE
Windshield Panel,aircraft
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
5120-01-210-5212 INTERCHANGEABLE
Pliers,retaining Ring
5315-01-222-7078 INTERCHANGEABLE
Screen
5985-01-544-1919120300 INTERCHANGEABLE
Antenna Assembly
Cpi Satcom & Antenna Technologies Inc
6515-01-599-3224120300 INTERCHANGEABLE
Nail,bone
Sign Fracture Care International Dba Sign
Cross-Reference Index
Part NumberManufacturer
00-000-90-201 Northrop Grumman Systems Corporation (USA)
N404P9C6 General Electric Company (USA)
1203-00 Itw Shakeproof Automotive Products (USA)
N404P9C6 PRIMARY Lockheed Martin Corporation Div Rms (USA)
Related Parts
5310-00-058-3730INTERCHANGEABLE
WASHER,LOCK
824637-2
5330-00-111-3066INTERCHANGEABLE
GASKET
1-20300
5310-00-930-8787INTERCHANGEABLE
WASHER,LOCK
1560-00-943-5002INTERCHANGEABLE
WINDSHIELD PANEL,AIRCRAFT
65206-01009-105
5120-01-210-5212INTERCHANGEABLE
PLIERS,RETAINING RING
5315-01-222-7078INTERCHANGEABLE
SCREEN
5985-01-544-1919INTERCHANGEABLE
ANTENNA ASSEMBLY
120300
6515-01-599-3224INTERCHANGEABLE
NAIL,BONE
120300

Frequently Asked Questions

What is NSN 5310-00-676-8573?

NSN 5310-00-676-8573 is a Washer,lock, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-676-8573?

NSN 5310-00-676-8573 has 4 cross-referenced part numbers: 00-000-90-201 (Northrop Grumman Systems Corporation), N404P9C6 (General Electric Company), 1203-00 (Itw Shakeproof Automotive Products), N404P9C6 (Lockheed Martin Corporation Div Rms).

What NSN replaces 5310-00-676-8573?

There are 8 known substitutes for 5310-00-676-8573: 5310-00-058-3730, 5330-00-111-3066, 5310-00-930-8787 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N404P9C6?

Key specifications for N404P9C6: Material: STEEL OVERALL; Surface Treatment: CADMIUM AND CHROMATE OVERALL; Outside Diameter: 0.215 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN; Material Thickness: 0.016 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-676-8573 still in active supply?

NSN 5310-00-676-8573 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com