PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55791Spacer,ring

Hydro-Aire Aerospace Corp · NSN 5365-00-963-5796 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-963-5796 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-963-5796. Primary manufacturer part number: 55791.
Features
  • Spacer,ring — FSC 5365
  • Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
  • Outside Diameter: 0.385 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
  • Overall Thickness: 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-S-764,COND T FED SPEC SINGLE MATERIAL RESPONSE
  • Inside Diameter: 0.301 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN
  • Material: STEEL COMP 416
  • 1 verified cross-reference
Applications
  • Applications requiring Steel Comp 416 construction
General Description

The Spacer,ring, cataloged under National Stock Number 5365-00-963-5796, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 6 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-00-963-5796
Primary Part Number55791
Item NameSpacer,ring
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp
StatusACTIVE
Hardness Rating25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Outside Diameter0.385 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
Overall Thickness0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
Material Document and ClassificationQQ-S-764,COND T FED SPEC SINGLE MATERIAL RESPONSE
Inside Diameter0.301 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN
MaterialSTEEL COMP 416
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3040-00-322-5603SM-B-187178 INTERCHANGEABLE
Bracket,eye,nonrotating Shaft
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
55791 PRIMARY Hydro-Aire Aerospace Corp (USA)
Related Parts
3040-00-322-5603INTERCHANGEABLE
BRACKET,EYE,NONROTATING SHAFT
SM-B-187178

Frequently Asked Questions

What is NSN 5365-00-963-5796?

NSN 5365-00-963-5796 is a Spacer,ring, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-00-963-5796?

NSN 5365-00-963-5796 has 1 cross-referenced part number: 55791 (Hydro-Aire Aerospace Corp).

What NSN replaces 5365-00-963-5796?

There is 1 known substitute for 5365-00-963-5796: 3040-00-322-5603. Verify interchangeability with system specifications before substitution.

What are the specifications of 55791?

Key specifications for 55791: Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Outside Diameter: 0.385 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN; Overall Thickness: 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-764,COND T FED SPEC SINGLE MATERIAL RESPONSE. 6 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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