The Spacer,ring, cataloged under National Stock Number 5365-00-424-9640, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Hartzell Propeller Llc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-00-424-9640 |
| Primary Part Number | A1855 |
| Item Name | Spacer,ring |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Hartzell Propeller Llc |
| Status | ACTIVE |
| Outside Diameter | 3.500 INCHES NOMINAL IN |
| Overall Thickness | 0.050 INCHES NOMINAL IN |
| Inside Diameter | 2.750 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A1855 PRIMARY | Hartzell Propeller Llc (USA) |
NSN 5365-00-424-9640 is a Spacer,ring, manufactured by Hartzell Propeller Llc, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-424-9640 has 1 manufacturer part number on file: A1855 (Hartzell Propeller Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4920-01-287-6103, 8455-01-673-9008. Verify interchangeability with system specifications before substitution.
Key specifications for A1855: Outside Diameter: 3.500 INCHES NOMINAL IN; Overall Thickness: 0.050 INCHES NOMINAL IN; Inside Diameter: 2.750 INCHES NOMINAL IN; Material: ALUMINUM ALLOY. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.