PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

373-5020-000Washer,lock

Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems · NSN 5310-00-209-0788 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-209-0788 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-209-0788. Primary manufacturer part number: 373-5020-000.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 0.305 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
  • Style Designator: FLAT EXTERNAL TEETH
  • Material: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
  • Material Thickness: 0.016 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
  • Hole Diameter: 0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1050 or Steel Comp 1551 or Steel Comp 1552 or Steel Comp 1053 or Steel Comp 1055 or Steel Comp 1059 or Steel Comp 1060 or Steel Comp 1561 or Steel Comp 1064 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-209-0788, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 42 commercial cross-references from 33 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-209-0788
Primary Part Number373-5020-000
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
StatusCANCELLED
Outside Diameter0.305 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Hardness Rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
Style DesignatorFLAT EXTERNAL TEETH
MaterialSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
Material Thickness0.016 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
Hole Diameter0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-011-0600110600 INTERCHANGEABLE
Screw,machine
General Motors Llc Dba General Motors Llc
5985-00-014-2398 INTERCHANGEABLE
Antenna
5905-00-023-964210193001-009 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Us Army Aviation and Missile Command
3040-00-150-7169107116 INTERCHANGEABLE
Shaft,shouldered
Bei Sensors & Systems Company, Inc. Dba Bei Duncan
5310-00-209-0909 INTERCHANGEABLE
Washer,lock
5310-00-209-09192407 INTERCHANGEABLE
Washer,lock
Telemechanics Inc
3120-00-216-93482407 INTERCHANGEABLE
Bearing Assembly
Northrop Grumman Systems Corporation Div Marine Systems
2940-00-218-546327831 INTERCHANGEABLE
Filter Element,fluid
Arvinmeritor Inc
5360-00-291-75402407 INTERCHANGEABLE
Spring,helical,compression
Imi Cash Valve Inc
5120-00-395-8461 INTERCHANGEABLE
Pliers,retaining Ring
Cross-Reference Index
Part NumberManufacturer
373-5020-000 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
A02157-103 Rosen Raymond and Co (USA)
105086-505 Raytheon Company (USA)
2407 Zf Industrieantriebe Witten Gmbh (DEU)
1106-00-00 Itw Shakeproof Automotive Products (USA)
10116680 Nimikkeistokeskus Ncb Finland (FIN)
1820 Unison Industries Llc (USA)
946055-106 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
92X2R Pressed Metals of America Inc (USA)
138473 Rolls-Royce Solutions America Inc (USA)
43W6961-20 Naval Ordnance Standards (USA)
MS35335-16 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS35335-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
4197902-015 Raytheon Company Div Rmd Strategic (USA)
MS35335-44 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS35335-30 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
0714263 General Dynamics European, Land-Systems-Mowag Gmbh Dba Gdels (CHE)
5310PL0817623 Jednolity Indeks Materialowy - Uniform Material Index (POL)
H962520604 Kearfott Corporation Div Guidance and Navigation Division (USA)
138473 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
Related Parts
5305-00-011-0600INTERCHANGEABLE
SCREW,MACHINE
110600
5985-00-014-2398INTERCHANGEABLE
ANTENNA
5905-00-023-9642INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
10193001-009
3040-00-150-7169INTERCHANGEABLE
SHAFT,SHOULDERED
107116
5310-00-209-0909INTERCHANGEABLE
WASHER,LOCK
5310-00-209-0919INTERCHANGEABLE
WASHER,LOCK
2407
3120-00-216-9348INTERCHANGEABLE
BEARING ASSEMBLY
2407
2940-00-218-5463INTERCHANGEABLE
FILTER ELEMENT,FLUID
27831
5360-00-291-7540INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
2407
5120-00-395-8461INTERCHANGEABLE
PLIERS,RETAINING RING
5310-00-514-6738INTERCHANGEABLE
WASHER,LOCK
104-3B6A
5905-00-578-4637INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
C220623-9

Frequently Asked Questions

What is NSN 5310-00-209-0788?

NSN 5310-00-209-0788 is a Washer,lock, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-209-0788?

NSN 5310-00-209-0788 has 42 cross-referenced part numbers: 373-5020-000 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), A02157-103 (Rosen Raymond and Co), 105086-505 (Raytheon Company), 2407 (Zf Industrieantriebe Witten Gmbh), 1106-00-00 (Itw Shakeproof Automotive Products) and 37 more.

What NSN replaces 5310-00-209-0788?

There are 12 known substitutes for 5310-00-209-0788: 5305-00-011-0600, 5985-00-014-2398, 5905-00-023-9642 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 373-5020-000?

Key specifications for 373-5020-000: Outside Diameter: 0.305 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; End Item Identification: ARMORED MULTI-PURPOSE VEHICLE (AMPV); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE; HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS); Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-209-0788 still in active supply?

NSN 5310-00-209-0788 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.
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