PartsTable TECHNICAL DATA SHEET
OCTOBER 2026Technical Data Sheet

NAS43DD8-256Spacer,sleeve

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5365-01-390-6441 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-390-6441 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-390-6441. Primary manufacturer part number: NAS43DD8-256.
Features
  • Spacer,sleeve — FSC 5365
  • Body Inside Diameter: 0.5170 INCHES MINIMUM AND 0.5670 INCHES MAXIMUM IN
  • Material Document and Classification: WW-T-700/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6, T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: ANODIZE OR CHROMATE OVERALL
  • Material: ALUMINUM ALLOY 2024 OVERALL
  • Surface Treatment Document and Classification: MIL-A-8625, TY 1 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541, CL 1A MIL SPEC 2ND TREATMENT RESPONSE OVERALL A
  • Corner Shape: SQUARE ALL CORNERS
  • Body Outside Diameter: 0.6100 INCHES MINIMUM AND 0.6400 INCHES MAXIMUM IN
Applications
  • Applications requiring Aluminum Alloy 2024 Overall construction
General Description

The Spacer,sleeve, cataloged under National Stock Number 5365-01-390-6441, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the government interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-01-390-6441
Primary Part NumberNAS43DD8-256
Item NameSpacer,sleeve
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
Body Inside Diameter0.5170 INCHES MINIMUM AND 0.5670 INCHES MAXIMUM IN
Material Document and ClassificationWW-T-700/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6, T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentANODIZE OR CHROMATE OVERALL
MaterialALUMINUM ALLOY 2024 OVERALL
Surface Treatment Document and ClassificationMIL-A-8625, TY 1 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541, CL 1A MIL SPEC 2ND TREATMENT RESPONSE OVERALL A
Corner ShapeSQUARE ALL CORNERS
Body Outside Diameter0.6100 INCHES MINIMUM AND 0.6400 INCHES MAXIMUM IN
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
⇄ Verified Substitutes 8
No Item Name Available
No Item Name Available
5365-00-001-12928200931 SAME_FSC
Plug,machine Thread
No Item Name Available
5365-00-001-1841123CSM51841-11 SAME_FSC
Ring,torque,tube,inboard,rudder
No Item Name Available
No Item Name Available
No Item Name Available
Cross-Reference Index
Part NumberManufacturer
NAS43DD8-256 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5365-00-000-6078INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-000-7436INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-001-1292INTERCHANGEABLE
PLUG,MACHINE THREAD
8200931
5365-00-001-1365INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-001-1841INTERCHANGEABLE
RING,TORQUE,TUBE,INBOARD,RUDDER
123CSM51841-11
5365-00-001-1915INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-001-1916INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-001-1940INTERCHANGEABLE
NO ITEM NAME AVAILABLE

Frequently Asked Questions

What is NSN 5365-01-390-6441?

NSN 5365-01-390-6441 is a Spacer,sleeve, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-390-6441?

NSN 5365-01-390-6441 has 1 cross-referenced part number: NAS43DD8-256 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).

What NSN replaces 5365-01-390-6441?

There are 8 known substitutes for 5365-01-390-6441: 5365-00-000-6078, 5365-00-000-7436, 5365-00-001-1292 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS43DD8-256?

Key specifications for NAS43DD8-256: Body Inside Diameter: 0.5170 INCHES MINIMUM AND 0.5670 INCHES MAXIMUM IN; Material Document and Classification: WW-T-700/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6, T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Surface Treatment: ANODIZE OR CHROMATE OVERALL; Material: ALUMINUM ALLOY 2024 OVERALL. 9 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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