Spacer, Sleeve5365-01-040-5263

NSN 5365-01-040-5263 · NIIN 010405263 · Part number FYLC-521

Ge Aviation Systems Llc Dba Ge Aviation Systems Llc · FSC 5365 — Bushings, Rings, Shims, and Spacers · FSG 53 — Hardware and Abrasives · CAGE 05624

Government record, cited

NSN 5365-01-040-5263 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-040-5263. Manufacturer of record part number: FYLC-521.

Also searched as 5365-01-040-5263 · 5365010405263 · NIIN 010405263 · 01-040-5263 · FSC 5365 Bushings, Rings, Shims, and Spacers · CAGE 05624 · FYLC-521

Nearby stock numbers ← 5365-01-040-5262 Spacer, Sleeve · 5365-01-040-5264 Spacer, Sleeve →

Features

Spacer,sleeve — FSC 5365
Corner Shape: SQUARE ALL CORNERS
Surface Treatment Document and Classification: MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Body Outside Diameter: 0.3045 INCHES MINIMUM AND 0.3245 INCHES MAXIMUM IN
Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
Material Document and Classification: MIL-T-5066,TYPE 2,COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Body Inside Diameter: 0.1665 INCHES MINIMUM AND 0.1745 INCHES MAXIMUM IN
Surface Treatment: OXIDE FILM OVERALL

Identification

NSN: 5365-01-040-5263
NIIN: 010405263
FSC: 5365 — Bushings, Rings, Shims, and Spacers
FSG: 53 — Hardware and Abrasives
Primary part number: FYLC-521
Manufacturer: Ge Aviation Systems Llc Dba Ge Aviation Systems Llc

General Description

The Spacer,sleeve, cataloged under National Stock Number 5365-01-040-5263, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Ge Aviation Systems Llc Dba Ge Aviation Systems Llc. Government technical data includes 8 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5365-01-040-5263
Primary Part Number	FYLC-521
Item Name	Spacer,sleeve
FSC / FSG	5365 / 53 — Bushings, Rings, Shims, and Spacers
Manufacturer	Ge Aviation Systems Llc Dba Ge Aviation Systems Llc
Status	ACTIVE
Corner Shape	SQUARE ALL CORNERS
Surface Treatment Document and Classification	MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Body Outside Diameter	0.3045 INCHES MINIMUM AND 0.3245 INCHES MAXIMUM IN
Style Designator	SOLID, PLAIN, NO OUTSIDE FLANGES
Material Document and Classification	MIL-T-5066,TYPE 2,COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Body Inside Diameter	0.1665 INCHES MINIMUM AND 0.1745 INCHES MAXIMUM IN
Surface Treatment	OXIDE FILM OVERALL
Material	STEEL COMP 1025 OVERALL

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

Cross-Reference Index

Part Number	Manufacturer
FYLC-521 PRIMARY	Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA)

No interchangeability data on file.

Other items in FSC 5365 — Bushings, Rings, Shims, and Spacers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5365-00-000-6078

5365-00-000-6078 · Item name not on file

5365-00-000-7436

5365-00-000-7436 · Item name not on file

5365-00-001-1292

PLUG,MACHINE THREAD

5365-00-001-1365

5365-00-001-1365 · Item name not on file

5365-00-001-1841

RING,TORQUE,TUBE,INBOARD,RUDDER

5365-00-001-1915

5365-00-001-1915 · Item name not on file

5365-00-001-1916

5365-00-001-1916 · Item name not on file

5365-00-001-1940

5365-00-001-1940 · Item name not on file

Frequently Asked Questions

What is NSN 5365-01-040-5263?

NSN 5365-01-040-5263 is a Spacer,sleeve, manufactured by Ge Aviation Systems Llc Dba Ge Aviation Systems Llc, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.

What part numbers are listed for NSN 5365-01-040-5263?

NSN 5365-01-040-5263 has 1 manufacturer part number on file: FYLC-521 (Ge Aviation Systems Llc Dba Ge Aviation Systems Llc).

What are the specifications of FYLC-521?

Key specifications for FYLC-521: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Outside Diameter: 0.3045 INCHES MINIMUM AND 0.3245 INCHES MAXIMUM IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5365-01-040-5263 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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