Spacer, Ring5365-00-477-8991

NSN 5365-00-477-8991 · NIIN 004778991

FSC 5365 — Bushings, Rings, Shims, and Spacers · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5365-00-477-8991 · 5365004778991 · NIIN 004778991 · 00-477-8991 · FSC 5365 Bushings, Rings, Shims, and Spacers

Nearby stock numbers ← 5365-00-477-8990 Shim · 5365-00-477-8992 Spacer, Sleeve →

Features

Spacer,ring — FSC 5365
Outside Diameter: 14.979 INCHES MINIMUM AND 14.982 INCHES MAXIMUM IN
Overall Thickness: 0.020 INCHES NOMINAL IN
Inside Diameter: 13.437 INCHES NOMINAL IN
Surface Treatment: PASSIVATE
Material: STEEL

Identification

NSN: 5365-00-477-8991
NIIN: 004778991
FSC: 5365 — Bushings, Rings, Shims, and Spacers
FSG: 53 — Hardware and Abrasives

General Description

The Spacer,ring, cataloged under National Stock Number 5365-00-477-8991, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5365-00-477-8991
Item Name	Spacer,ring
FSC / FSG	5365 / 53 — Bushings, Rings, Shims, and Spacers
Status	ACTIVE
Outside Diameter	14.979 INCHES MINIMUM AND 14.982 INCHES MAXIMUM IN
Overall Thickness	0.020 INCHES NOMINAL IN
Inside Diameter	13.437 INCHES NOMINAL IN
Surface Treatment	PASSIVATE
Material	STEEL

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 2

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5340-00-719-9458294525 POSSIBLE MATCH

BRACKET,MOUNTING

Possible match (shared part number)Monadnock Company, the Dba Lisi Aerospace

4320-00-993-7287294525 POSSIBLE MATCH

PISTON,PUMP ACTUATOR

Possible match (shared part number)Eaton Aerospace, Llc Dba Jackson South

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
294-525	3/2 Design control — primary reference U.S. Government activity

Related Parts

5340-00-719-9458POSSIBLE MATCH

BRACKET,MOUNTING

294525

4320-00-993-7287POSSIBLE MATCH

PISTON,PUMP ACTUATOR

294525

Frequently Asked Questions

What is NSN 5365-00-477-8991?

NSN 5365-00-477-8991 is a Spacer,ring, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.

What NSN replaces 5365-00-477-8991?

2 possible matches (shared part number, not a government interchangeability claim): 5340-00-719-9458, 4320-00-993-7287. Verify interchangeability with system specifications before substitution.

What are the specifications of 5365-00-477-8991?

Key specifications for 5365-00-477-8991: Outside Diameter: 14.979 INCHES MINIMUM AND 14.982 INCHES MAXIMUM IN; Overall Thickness: 0.020 INCHES NOMINAL IN; Inside Diameter: 13.437 INCHES NOMINAL IN; Surface Treatment: PASSIVATE. 5 specifications are documented in the U.S. Government catalog.

Is NSN 5365-00-477-8991 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

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

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