PartsTable TECHNICAL DATA SHEET

NSN 5365-01-256-9799Government record, cited

Ring, Lock, Serrated5365-01-256-9799

NSN 5365-01-256-9799 · NIIN 012569799 · Part number MS51997E107P

Sae International Dba Sae International · FSC 5365 — Bushings, Rings, Shims, and Spacers · FSG 53 — Hardware and Abrasives · CAGE 0U583

Government record, cited

NSN 5365-01-256-9799 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-256-9799. Manufacturer of record part number: MS51997E107P.

Also searched as 5365-01-256-9799 · 5365012569799 · NIIN 012569799 · 01-256-9799 · FSC 5365 Bushings, Rings, Shims, and Spacers · CAGE 0U583 · MS51997E107P · AS51997 · AS51997

Nearby stock numbers ← 5365-01-256-9775 Spacer, Sleeve · 5365-01-256-9808 Spacer, Ring →

Features

Ring,lock,serrated — FSC 5365
Material Document and Classification: AMS 5731,TY A286JGAAMS 5734,TY A286 ASSN STD SINGLE MATERIAL RESPONSE
Overall Outside Diameter: 0.778 INCHES MINIMUM AND 0.787 INCHES MAXIMUM IN
Inner Serration Quantity: 26
Pilot Diameter: 0.724 INCHES MINIMUM AND 0.739 INCHES MAXIMUM IN
Inside Diameter: 0.571 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
Side Outer Serrations Omitted for Close Edge Installation: TWO SIDES
Surface Treatment: PASSIVATE

Identification

NSN: 5365-01-256-9799
NIIN: 012569799
FSC: 5365 — Bushings, Rings, Shims, and Spacers
FSG: 53 — Hardware and Abrasives
Primary part number: MS51997E107P
Manufacturer: Sae International Dba Sae International

General Description

The Ring,lock,serrated, cataloged under National Stock Number 5365-01-256-9799, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5365-01-256-9799
Primary Part Number	MS51997E107P
Item Name	Ring,lock,serrated
FSC / FSG	5365 / 53 — Bushings, Rings, Shims, and Spacers
Manufacturer	Sae International Dba Sae International
Status	ACTIVE
Material Document and Classification	AMS 5731,TY A286JGAAMS 5734,TY A286 ASSN STD SINGLE MATERIAL RESPONSE
Overall Outside Diameter	0.778 INCHES MINIMUM AND 0.787 INCHES MAXIMUM IN
Inner Serration Quantity	26
Pilot Diameter	0.724 INCHES MINIMUM AND 0.739 INCHES MAXIMUM IN
Inside Diameter	0.571 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
Side Outer Serrations Omitted for Close Edge Installation	TWO SIDES
Surface Treatment	PASSIVATE
Outer Serration Quantity	16
Material	IRON ALLOY 660

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
MS51997E107P PRIMARY	Sae International Dba Sae International (USA)

Reference documents

Reference	Meaning
MS51997E107P	5/9 Secondary reference U.S. Government activity
AS51997	5/1 Secondary reference Sae International Dba Sae International
MS51997E107P	3/9 Design control — primary reference U.S. Government activity
AS51997	5/9 Secondary reference U.S. Government activity

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 5365-01-256-9799?

NSN 5365-01-256-9799 is a Ring,lock,serrated, manufactured by Sae International Dba Sae International, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.

What part numbers are listed for NSN 5365-01-256-9799?

NSN 5365-01-256-9799 has 1 manufacturer part number on file: MS51997E107P (Sae International Dba Sae International).

What are the specifications of MS51997E107P?

Key specifications for MS51997E107P: Overall Height: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN; Material Document and Classification: AMS 5731,TY A286JGAAMS 5734,TY A286 ASSN STD SINGLE MATERIAL RESPONSE; Overall Outside Diameter: 0.778 INCHES MINIMUM AND 0.787 INCHES MAXIMUM IN; Inner Serration Quantity: 26. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5365-01-256-9799 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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