PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21330Washer,flat

Charles Reed Knight Jr Dba Knight's Armament Company · NSN 5310-01-533-9414 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-533-9414 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-533-9414. Primary manufacturer part number: 21330.
Features
  • Washer,flat — FSC 5310
  • 1 verified cross-reference
  • Primary manufacturer: Charles Reed Knight Jr Dba Knight's Armament Company
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-533-9414, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Charles Reed Knight Jr Dba Knight's Armament Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-533-9414
Primary Part Number21330
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCharles Reed Knight Jr Dba Knight's Armament Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5360-00-134-865921330 INTERCHANGEABLE
Spring,helical,compression
Barksdale, Inc
6850-00-163-579221330 INTERCHANGEABLE
Sealer,chemical
Nd Industries Inc Div Nd Industries, Inc. - Michigan Division
3120-00-496-659611-28 INTERCHANGEABLE
Bearing,sleeve
Dresser Industries Inc Leroi Div
2910-00-570-96517041861 INTERCHANGEABLE
Carburetor,float
General Motors Llc Dba General Motors Llc
1680-00-700-8373PM21330-4 INTERCHANGEABLE
Grip Assembly,controller,aircraf
Unison Industries Llc
3040-00-937-4034 INTERCHANGEABLE
Extension Shaft
5935-01-075-38905181-2241-00 INTERCHANGEABLE
Adapter,connector
Tyco Electronics Corp
5330-01-277-231721330 INTERCHANGEABLE
Gasket and Seal Set
Landoll Company, Llc
4820-01-419-255521330-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
1660-01-706-23372133-0 INTERCHANGEABLE
Diffuser,air,aircraft Heating an
Aerospace Lighting Corporation
Cross-Reference Index
Part NumberManufacturer
21330 PRIMARY Charles Reed Knight Jr Dba Knight's Armament Company (USA)
Related Parts
5360-00-134-8659INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21330
6850-00-163-5792INTERCHANGEABLE
SEALER,CHEMICAL
21330
3120-00-496-6596INTERCHANGEABLE
BEARING,SLEEVE
11-28
2910-00-570-9651INTERCHANGEABLE
CARBURETOR,FLOAT
7041861
1680-00-700-8373INTERCHANGEABLE
GRIP ASSEMBLY,CONTROLLER,AIRCRAF
PM21330-4
3040-00-937-4034INTERCHANGEABLE
EXTENSION SHAFT
5935-01-075-3890INTERCHANGEABLE
ADAPTER,CONNECTOR
5181-2241-00
5330-01-277-2317INTERCHANGEABLE
GASKET AND SEAL SET
21330
4820-01-419-2555INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21330-001
1660-01-706-2337INTERCHANGEABLE
DIFFUSER,AIR,AIRCRAFT HEATING AN
2133-0

Frequently Asked Questions

What is NSN 5310-01-533-9414?

NSN 5310-01-533-9414 is a Washer,flat, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-533-9414?

NSN 5310-01-533-9414 has 1 cross-referenced part number: 21330 (Charles Reed Knight Jr Dba Knight's Armament Company).

What NSN replaces 5310-01-533-9414?

There are 10 known substitutes for 5310-01-533-9414: 5360-00-134-8659, 6850-00-163-5792, 3120-00-496-6596 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21330?

Key specifications for 21330: End Item Identification: M203 40MM MM. 1 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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