PartsTable TECHNICAL DATA SHEET
OCTOBER 2026Technical Data Sheet

BACS18AR1Spacer,special Shaped

The Boeing Company Div Defense · NSN 5365-01-342-3871 · FSC 5365 · Bushings, Rings, Shims, and Spacers
Government record, cited
NSN 5365-01-342-3871 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-342-3871. Primary manufacturer part number: BACS18AR1.
Features
  • Spacer,special Shaped — FSC 5365
  • Outside Diameter: 0.870 INCHES NOMINAL IN
  • Overall Thickness: 0.295 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
  • Material: PLASTIC
  • 2 commercial cross-references
  • Primary manufacturer: The Boeing Company Div Defense
Identification
  • NSN: 5365-01-342-3871
  • NIIN: 013423871
  • FSC: 5365 — Bushings, Rings, Shims, and Spacers
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: BACS18AR1
  • Manufacturer: The Boeing Company Div Defense
General Description

The Spacer,special Shaped, cataloged under National Stock Number 5365-01-342-3871, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 3 specifications, cited from the U.S. Government catalog. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-01-342-3871
Primary Part NumberBACS18AR1
Item NameSpacer,special Shaped
FSC / FSG5365 / 53 — Bushings, Rings, Shims, and Spacers
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Outside Diameter0.870 INCHES NOMINAL IN
Overall Thickness0.295 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
MaterialPLASTIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HazardNot stated in government record
Cross-Reference Index
Part NumberManufacturer
YHLZ1C-2 Souriau Usa, Inc. Dba Souriau Usa Inc (USA)
BACS18AR1 PRIMARY The Boeing Company Div Defense (USA)
Other items in FSC 5365 — Bushings, Rings, Shims, and Spacers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5365-00-001-1292
PLUG,MACHINE THREAD
5365-00-001-1841
RING,TORQUE,TUBE,INBOARD,RUDDER

Frequently Asked Questions

What is NSN 5365-01-342-3871?

NSN 5365-01-342-3871 is a Spacer,special Shaped, manufactured by The Boeing Company Div Defense, classified under FSC 5365 (Bushings, Rings, Shims, and Spacers). Status: active.

What are the part numbers for NSN 5365-01-342-3871?

NSN 5365-01-342-3871 has 2 cross-referenced part numbers: YHLZ1C-2 (Souriau Usa, Inc. Dba Souriau Usa Inc), BACS18AR1 (The Boeing Company Div Defense).

What are the specifications of BACS18AR1?

Key specifications for BACS18AR1: Outside Diameter: 0.870 INCHES NOMINAL IN; Overall Thickness: 0.295 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN; Overall Length: 0.820 INCHES NOMINAL IN; Overall Width: 0.690 INCHES NOMINAL IN. 3 specifications are documented in the U.S. Government catalog.

Is NSN 5365-01-342-3871 hazardous material?

Hazard status is not stated in the government record for NSN 5365-01-342-3871 — no DOT hazard class, UN number, or hazard classification field is present in the cited data. This page does not assert an item is or is not hazardous.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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