Washer, Flat5310-01-371-1665

NSN 5310-01-371-1665 · NIIN 013711665 · Part number 309651

Parker-Hannifin Corporation Div Hydraulic Accumulator Division · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 26337

Government record, cited

NSN 5310-01-371-1665 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-371-1665. Manufacturer of record part number: 309651.

Also searched as 5310-01-371-1665 · 5310013711665 · NIIN 013711665 · 01-371-1665 · FSC 5310 Nuts and Washers · CAGE 26337 · 309651

Nearby stock numbers ← 5310-01-371-1646 · 5310-01-371-1684 Nut, Sleeve →

5310-01-371-1665 — Nuts and Washers

Features

Washer,flat — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Parker-Hannifin Corporation Div Hydraulic Accumulator Division

Identification

NSN: 5310-01-371-1665
NIIN: 013711665
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 309651
Manufacturer: Parker-Hannifin Corporation Div Hydraulic Accumulator Division

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-371-1665, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Div Hydraulic Accumulator Division. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Washer,flat
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	Parker-Hannifin Corporation Div Hydraulic Accumulator Division (CAGE 26337)

Technical Specifications

Parameter	Value
NSN	5310-01-371-1665
Primary Part Number	309651
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Parker-Hannifin Corporation Div Hydraulic Accumulator Division
Status	ACTIVE

Lifecycle & Compliance

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

⇄ Related Items 1

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

5330-01-430-2800309651 POSSIBLE MATCH

GASKET

Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp

Cross-Reference Index

Part Number	Manufacturer
309651 PRIMARY	Parker-Hannifin Corporation Div Hydraulic Accumulator Division (USA)

Related Parts

5330-01-430-2800POSSIBLE MATCH

GASKET

309651

Frequently Asked Questions

What is NSN 5310-01-371-1665?

NSN 5310-01-371-1665 is a Washer,flat, manufactured by Parker-Hannifin Corporation Div Hydraulic Accumulator Division, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-371-1665?

NSN 5310-01-371-1665 has 1 manufacturer part number on file: 309651 (Parker-Hannifin Corporation Div Hydraulic Accumulator Division).

What NSN replaces 5310-01-371-1665?

1 possible match (shared part number, not a government interchangeability claim): 5330-01-430-2800. Verify interchangeability with system specifications before substitution.

Is NSN 5310-01-371-1665 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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