PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8002100Washer,lock

The Crosby Group Llc Dba the Crosby Group · NSN 5310-01-422-4476 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-422-4476 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-422-4476. Primary manufacturer part number: 8002100.
Features
  • Washer,lock — FSC 5310
  • Material: STEEL COMP 316 OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Hole Diameter: 0.502 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Outside Diameter: 0.869 INCHES NOMINAL IN
  • Departure From Cited Document: AS MODIFIED BY MATERIAL.
  • Style Designator: SPLIT HELICAL-RIGHT HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 316 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-422-4476, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 30 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-422-4476
Primary Part Number8002100
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerThe Crosby Group Llc Dba the Crosby Group
StatusACTIVE
MaterialSTEEL COMP 316 OVERALL
Surface TreatmentPASSIVATE OVERALL
Hole Diameter0.502 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Outside Diameter0.869 INCHES NOMINAL IN
Departure From Cited DocumentAS MODIFIED BY MATERIAL.
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Thickness0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-00-933-8778004-003005-024 INTERCHANGEABLE
Washer,lock
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5310-01-180-7157 INTERCHANGEABLE
Washer,lock
5305-01-260-8929 INTERCHANGEABLE
Screw,cap,hexagon Head
5310-01-555-00247662064-34 INTERCHANGEABLE
Washer,lock
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
8002100 The Crosby Group Llc Dba the Crosby Group (USA)
F54036 ITEM 16 Smith-Berger Marine, Inc (USA)
E108186 PART NO 232 Control Flow, Inc. Dba Control Flow Inc (USA)
D301079 FIND NO 64 Control Flow, Inc. Dba Control Flow Inc (USA)
F53140 PC 17 Smith-Berger Marine, Inc (USA)
6894422 ITEM NO 128 Naval Sea Systems Command (USA)
WG105383 Zf Industrieantriebe Witten Gmbh (DEU)
MS35338-143 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
E102170 PC NO 67 Control Flow, Inc. Dba Control Flow Inc (USA)
D301087 FIND NO 64 Control Flow, Inc. Dba Control Flow Inc (USA)
MS35338-143 CRE S 316 ONLY Zf Industrieantriebe Witten Gmbh (DEU)
E108609 FIND 232 Control Flow, Inc. Dba Control Flow Inc (USA)
D301080 FIND NO 55 Control Flow, Inc. Dba Control Flow Inc (USA)
E106482 PART NO 67 Control Flow, Inc. Dba Control Flow Inc (USA)
04-0060 ITEM NO 67 Ward Leonard Ct Llc (USA)
01-0296 ITEM NO 69 Ward Leonard Ct Llc (USA)
04-0060 ITEM NO 67 Ward Leonard Ct Llc (USA)
DPP51-0010 Ward Leonard Ct Llc (USA)
E104555 FIND 83 Control Flow, Inc. Dba Control Flow Inc (USA)
E103972 FIND NO 67 Control Flow, Inc. Dba Control Flow Inc (USA)
Related Parts
5310-00-933-8778INTERCHANGEABLE
WASHER,LOCK
004-003005-024
5310-01-180-7157INTERCHANGEABLE
WASHER,LOCK
5305-01-260-8929INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5310-01-555-0024INTERCHANGEABLE
WASHER,LOCK
7662064-34

Frequently Asked Questions

What is NSN 5310-01-422-4476?

NSN 5310-01-422-4476 is a Washer,lock, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-422-4476?

NSN 5310-01-422-4476 has 30 cross-referenced part numbers: 8002100 (The Crosby Group Llc Dba the Crosby Group), F54036 ITEM 16 (Smith-Berger Marine, Inc), E108186 PART NO 232 (Control Flow, Inc. Dba Control Flow Inc), D301079 FIND NO 64 (Control Flow, Inc. Dba Control Flow Inc), F53140 PC 17 (Smith-Berger Marine, Inc) and 25 more.

What NSN replaces 5310-01-422-4476?

There are 4 known substitutes for 5310-01-422-4476: 5310-00-933-8778, 5310-01-180-7157, 5305-01-260-8929 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8002100?

Key specifications for 8002100: Material: STEEL COMP 316 OVERALL; Surface Treatment: PASSIVATE OVERALL; Hole Diameter: 0.502 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE 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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