PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21677Spacer,sleeve

Industrial Technologies and Services Llc · NSN 5365-00-981-5818 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-981-5818 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-981-5818. Primary manufacturer part number: 21677.
Features
  • Spacer,sleeve — FSC 5365
  • Body Inside Diameter: 0.4580 INCHES NOMINAL IN
  • Corner Shape: SQUARE ALL CORNERS
  • Material: STEEL OVERALL
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Body Outside Diameter: 0.8740 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Industrial Technologies and Services Llc
Applications
  • Applications requiring Steel Overall construction
General Description

The Spacer,sleeve, cataloged under National Stock Number 5365-00-981-5818, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Industrial Technologies and Services Llc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-00-981-5818
Primary Part Number21677
Item NameSpacer,sleeve
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerIndustrial Technologies and Services Llc
StatusACTIVE
Body Inside Diameter0.4580 INCHES NOMINAL IN
Corner ShapeSQUARE ALL CORNERS
MaterialSTEEL OVERALL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Body Outside Diameter0.8740 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5935-00-259-9850238-5003-1 INTERCHANGEABLE
Strap Nut,plug-in Electronic Com
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
1095-01-195-356521677 INTERCHANGEABLE
Frame and Arm Assembly
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5360-01-334-397521677 INTERCHANGEABLE
Spring,helical,compression
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
21677 PRIMARY Industrial Technologies and Services Llc (USA)
Related Parts
5935-00-259-9850INTERCHANGEABLE
STRAP NUT,PLUG-IN ELECTRONIC COM
238-5003-1
1095-01-195-3565INTERCHANGEABLE
FRAME AND ARM ASSEMBLY
21677
5360-01-334-3975INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21677

Frequently Asked Questions

What is NSN 5365-00-981-5818?

NSN 5365-00-981-5818 is a Spacer,sleeve, manufactured by Industrial Technologies and Services Llc, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-00-981-5818?

NSN 5365-00-981-5818 has 1 cross-referenced part number: 21677 (Industrial Technologies and Services Llc).

What NSN replaces 5365-00-981-5818?

There are 3 known substitutes for 5365-00-981-5818: 5935-00-259-9850, 1095-01-195-3565, 5360-01-334-3975. Verify interchangeability with system specifications before substitution.

What are the specifications of 21677?

Key specifications for 21677: Body Inside Diameter: 0.4580 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS; Material: STEEL OVERALL; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 6 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