PartsTable TECHNICAL DATA SHEET
OCTOBER 2026Technical Data Sheet

B300-249-45/109Spacer,plate

Environmental Tectonics Corp · NSN 5365-01-354-6977 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-354-6977 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-354-6977. Primary manufacturer part number: B300-249-45/109.
Features
  • Spacer,plate — FSC 5365
  • Smallest Bolt Hole Quantity: 8
  • Material: ALUMINUM ALLOY 6061
  • Smallest Bolt Hole Diameter: 0.438 INCHES NOMINAL IN
  • Purchase Description Identification: 33714-B300-249-45/109
  • Largest Bolt Hole Diameter: 0.578 INCHES NOMINAL IN
  • Largest Bolt Hole Quantity: 6
  • 1 verified cross-reference
Applications
  • Applications requiring Aluminum Alloy 6061 construction
General Description

The Spacer,plate, cataloged under National Stock Number 5365-01-354-6977, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Environmental Tectonics Corp. Government technical data includes 6 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
NSN5365-01-354-6977
Primary Part NumberB300-249-45/109
Item NameSpacer,plate
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerEnvironmental Tectonics Corp
StatusACTIVE
Smallest Bolt Hole Quantity8
MaterialALUMINUM ALLOY 6061
Smallest Bolt Hole Diameter0.438 INCHES NOMINAL IN
Purchase Description Identification33714-B300-249-45/109
Largest Bolt Hole Diameter0.578 INCHES NOMINAL IN
Largest Bolt Hole Quantity6
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
B300-249-45/109 PRIMARY Environmental Tectonics Corp (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 5365-01-354-6977?

NSN 5365-01-354-6977 is a Spacer,plate, manufactured by Environmental Tectonics Corp, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-354-6977?

NSN 5365-01-354-6977 has 1 cross-referenced part number: B300-249-45/109 (Environmental Tectonics Corp).

What NSN replaces 5365-01-354-6977?

There are 8 known substitutes for 5365-01-354-6977: 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 B300-249-45/109?

Key specifications for B300-249-45/109: Smallest Bolt Hole Quantity: 8; Material: ALUMINUM ALLOY 6061; Smallest Bolt Hole Diameter: 0.438 INCHES NOMINAL IN; Purchase Description Identification: 33714-B300-249-45/109. 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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