PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40820Spacer,ring

Napco International Llc Dba Napco International Inc · NSN 5365-00-641-1644 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-641-1644 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-641-1644. Primary manufacturer part number: 40820.
Features
  • Spacer,ring — FSC 5365
  • Material: COPPER
  • Overall Thickness: 0.062 INCHES NOMINAL IN
  • Inside Diameter: 0.880 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
  • Outside Diameter: 1.046 INCHES NOMINAL IN
  • 5 verified cross-references
  • Primary manufacturer: Napco International Llc Dba Napco International Inc
Applications
  • Applications requiring Copper construction
General Description

The Spacer,ring, cataloged under National Stock Number 5365-00-641-1644, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Napco International Llc Dba Napco International Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 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
NSN5365-00-641-1644
Primary Part Number40820
Item NameSpacer,ring
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusCANCELLED
MaterialCOPPER
Overall Thickness0.062 INCHES NOMINAL IN
Inside Diameter0.880 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
Outside Diameter1.046 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5325-00-079-72370400-0009 INTERCHANGEABLE
Grommet,nonmetallic
Keysight Technologies Inc
4820-00-087-8451 INTERCHANGEABLE
Valve,check
3110-00-100-0743 INTERCHANGEABLE
Cone and Rollers,tapered Roller
5950-00-126-473994231-1 INTERCHANGEABLE
Transformer,audio Frequency
L3 Technologies, Inc. Div L3harris Edo Western Corporation
9540-00-148-4299 INTERCHANGEABLE
Angle,structural
5120-00-235-5898 INTERCHANGEABLE
Socket,socket Wrench
5330-00-245-550365183 INTERCHANGEABLE
Gasket
Hdt Expeditionary Systems Inc
2920-00-361-82852-145 INTERCHANGEABLE
Spring
Precision Aerospace Corporation Dba Precision Engine Control
4810-00-541-6052214-5 INTERCHANGEABLE
Valve,gate
Flowserve Corporation Div Flowserve Us Inc
3120-00-627-955240820 INTERCHANGEABLE
Bushing,sleeve
Rps-Fl, Inc. Dba Rps Inc
Cross-Reference Index
Part NumberManufacturer
40820 PRIMARY Napco International Llc Dba Napco International Inc (USA)
2145 Detroit Suspender and Belt Co (USA)
40820 PRIMARY Morris Material Handling, Inc. (USA)
65183 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
157D1-0884 Kurz & Root Generator Company, Llc (USA)
Related Parts
5325-00-079-7237INTERCHANGEABLE
GROMMET,NONMETALLIC
0400-0009
4820-00-087-8451INTERCHANGEABLE
VALVE,CHECK
3110-00-100-0743INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
5950-00-126-4739INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
94231-1
9540-00-148-4299INTERCHANGEABLE
ANGLE,STRUCTURAL
5120-00-235-5898INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5330-00-245-5503INTERCHANGEABLE
GASKET
65183
2920-00-361-8285INTERCHANGEABLE
SPRING
2-145
4810-00-541-6052INTERCHANGEABLE
VALVE,GATE
214-5
3120-00-627-9552INTERCHANGEABLE
BUSHING,SLEEVE
40820
5950-00-782-8195INTERCHANGEABLE
TRANSFORMER,POWER
SMC587840
1660-00-784-5840INTERCHANGEABLE
VALVE
2145

Frequently Asked Questions

What is NSN 5365-00-641-1644?

NSN 5365-00-641-1644 is a Spacer,ring, manufactured by Napco International Llc Dba Napco International Inc, classified under FSC 5365 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5365-00-641-1644?

NSN 5365-00-641-1644 has 5 cross-referenced part numbers: 40820 (Napco International Llc Dba Napco International Inc), 2145 (Detroit Suspender and Belt Co), 40820 (Morris Material Handling, Inc.), 65183 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 157D1-0884 (Kurz & Root Generator Company, Llc).

What NSN replaces 5365-00-641-1644?

There are 12 known substitutes for 5365-00-641-1644: 5325-00-079-7237, 4820-00-087-8451, 3110-00-100-0743 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40820?

Key specifications for 40820: Material: COPPER; Overall Thickness: 0.062 INCHES NOMINAL IN; Inside Diameter: 0.880 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN; Outside Diameter: 1.046 INCHES NOMINAL IN. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5365-00-641-1644 still in active supply?

NSN 5365-00-641-1644 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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