PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10233ITEM20Washer,flat

Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok · NSN 5310-01-682-1978 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-682-1978 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-682-1978. Primary manufacturer part number: 10233ITEM20.
Features
  • Washer,flat — FSC 5310
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
  • 3 verified cross-references
  • Primary manufacturer: Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-682-1978, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN5310-01-682-1978
Primary Part Number10233ITEM20
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCircor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5945-00-052-6590965214-1 INTERCHANGEABLE
Solenoid,electrical
Parker Hannifin Corporation Div Hydraulic Systems Division
5310-00-167-07008176675 INTERCHANGEABLE
Washer,flat
Us Army Aviation and Missile Command
5120-00-293-0014 INTERCHANGEABLE
Wrench Set,crowfoot,ratcheting
5310-00-365-21025291 INTERCHANGEABLE
Washer,flat
Prestolite Electric Inc
2815-00-393-5460 INTERCHANGEABLE
Guide,valve Stem
6250-00-488-5399856 INTERCHANGEABLE
Lampholder
Bryant Electric
9320-00-555-9727 INTERCHANGEABLE
Rubber Strip
2990-00-810-44131873 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
5915-01-067-9468 INTERCHANGEABLE
Filter,band Pass
5340-01-504-69358035442 INTERCHANGEABLE
Door Restraint Strap
Jlg Industries, Inc.
Cross-Reference Index
Part NumberManufacturer
10233ITEM20 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
5291 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
2621-906-13ITEM82 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
5945-00-052-6590INTERCHANGEABLE
SOLENOID,ELECTRICAL
965214-1
5310-00-167-0700INTERCHANGEABLE
WASHER,FLAT
8176675
5120-00-293-0014INTERCHANGEABLE
WRENCH SET,CROWFOOT,RATCHETING
5310-00-365-2102INTERCHANGEABLE
WASHER,FLAT
5291
2815-00-393-5460INTERCHANGEABLE
GUIDE,VALVE STEM
6250-00-488-5399INTERCHANGEABLE
LAMPHOLDER
856
9320-00-555-9727INTERCHANGEABLE
RUBBER STRIP
2990-00-810-4413INTERCHANGEABLE
MUFFLER,EXHAUST
1873
5915-01-067-9468INTERCHANGEABLE
FILTER,BAND PASS
5340-01-504-6935INTERCHANGEABLE
DOOR RESTRAINT STRAP
8035442

Frequently Asked Questions

What is NSN 5310-01-682-1978?

NSN 5310-01-682-1978 is a Washer,flat, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-682-1978?

NSN 5310-01-682-1978 has 3 cross-referenced part numbers: 10233ITEM20 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), 5291 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), 2621-906-13ITEM82 (Electric Boat Corporation Div General Dynamics Electric Boat).

What NSN replaces 5310-01-682-1978?

There are 10 known substitutes for 5310-01-682-1978: 5945-00-052-6590, 5310-00-167-0700, 5120-00-293-0014 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 10233ITEM20?

Key specifications for 10233ITEM20: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 2 total characteristics are documented in the Federal Logistics Information System.

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