PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66541Spacer,ring

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 5365-00-110-2457 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-110-2457 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-110-2457. Primary manufacturer part number: 66541.
Features
  • Spacer,ring — FSC 5365
  • Outside Diameter: 0.818 INCHES MINIMUM AND 0.819 INCHES MAXIMUM IN
  • Surface Finish: 32.0 MICROINCHES LEFT SIDE
  • Material: COPPER ALLOY
  • Surface Finish: 32.0 MICROINCHES RIGHT SIDE
  • Surface Finish: 32.0 MICROINCHES BORE
  • Surface Finish: 32.0 MICROINCHES LARGEST OUTSIDE DIAMETER
  • Material Document and Classification: ALLOY 605,MUELLER BRASS CO. MFR REF SINGLE MATERIAL RESPONSE
Applications
  • Applications requiring Copper Alloy construction
General Description

The Spacer,ring, cataloged under National Stock Number 5365-00-110-2457, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-00-110-2457
Primary Part Number66541
Item NameSpacer,ring
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Outside Diameter0.818 INCHES MINIMUM AND 0.819 INCHES MAXIMUM IN
Surface Finish32.0 MICROINCHES LEFT SIDE
MaterialCOPPER ALLOY
Surface Finish32.0 MICROINCHES RIGHT SIDE
Surface Finish32.0 MICROINCHES BORE
Surface Finish32.0 MICROINCHES LARGEST OUTSIDE DIAMETER
Material Document and ClassificationALLOY 605,MUELLER BRASS CO. MFR REF SINGLE MATERIAL RESPONSE
Inside Diameter0.698 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5360-00-182-5493 INTERCHANGEABLE
Spring,helical,compression
3455-01-025-983410061 INTERCHANGEABLE
Blade,band Saw,metal Cutting
L.s. Starrett Company (the) Div Tool Division
9330-01-297-38911551AS555-1 INTERCHANGEABLE
Window,observation
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
2530-01-414-126866541 INTERCHANGEABLE
Hub,wheel,vehicular
Tld Ace Corp Div Tld Ace
4730-01-424-088466541 INTERCHANGEABLE
Strainer Element,sediment
Spirax Sarco Inc Dba Spirax Sarco
Cross-Reference Index
Part NumberManufacturer
66541 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
66541 Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations (USA)
Related Parts
5360-00-182-5493INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
3455-01-025-9834INTERCHANGEABLE
BLADE,BAND SAW,METAL CUTTING
10061
9330-01-297-3891INTERCHANGEABLE
WINDOW,OBSERVATION
1551AS555-1
2530-01-414-1268INTERCHANGEABLE
HUB,WHEEL,VEHICULAR
66541
4730-01-424-0884INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
66541

Frequently Asked Questions

What is NSN 5365-00-110-2457?

NSN 5365-00-110-2457 is a Spacer,ring, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-00-110-2457?

NSN 5365-00-110-2457 has 2 cross-referenced part numbers: 66541 (Parker Hannifin Corporation Div Hydraulic Systems Division), 66541 (Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations).

What NSN replaces 5365-00-110-2457?

There are 5 known substitutes for 5365-00-110-2457: 5360-00-182-5493, 3455-01-025-9834, 9330-01-297-3891 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66541?

Key specifications for 66541: Outside Diameter: 0.818 INCHES MINIMUM AND 0.819 INCHES MAXIMUM IN; Surface Finish: 32.0 MICROINCHES LEFT SIDE; Material: COPPER ALLOY; Surface Finish: 32.0 MICROINCHES RIGHT SIDE. 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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