PartsTable TECHNICAL DATA SHEET

NSN 4320-01-688-3645Government record, cited

Ring, Wearing4320-01-688-3645

NSN 4320-01-688-3645 · NIIN 016883645 · Part number 803751002

E. P. Barrus Limited Div Special Products · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE K3891

Government record, cited

NSN 4320-01-688-3645 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-688-3645. Manufacturer of record part number: 803751002.

Also searched as 4320-01-688-3645 · 4320016883645 · NIIN 016883645 · 01-688-3645 · FSC 4320 Power and Hand Pumps · CAGE K3891 · 803751002

Nearby stock numbers ← 4320-01-688-3542 Piston, Pump · 4320-01-688-4115 Sleeve, Shaft, Pump →

Features

Ring,wearing — FSC 4320
1 manufacturer part number on file
Manufacturer of record: E. P. Barrus Limited Div Special Products

Identification

NSN: 4320-01-688-3645
NIIN: 016883645
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 803751002
Manufacturer: E. P. Barrus Limited Div Special Products

General Description

The Ring,wearing, cataloged under National Stock Number 4320-01-688-3645, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is E. P. Barrus Limited Div Special Products. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-688-3645
Primary Part Number	803751002
Item Name	Ring,wearing
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	E. P. Barrus Limited Div Special Products
Status	ACTIVE

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
803751002	E. P. Barrus Limited Div Special Products (GBR)

Reference documents

Reference	Meaning
803751002	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4320 — Power and Hand Pumps

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

4320-00-001-1633

4320-00-001-1633 · Item name not on file

4320-00-001-2628

RETAINER AND PIN

4320-00-001-2629

HOUSING AND PIN

4320-00-001-2630

PUMP,CENTRIFUGAL

4320-00-001-2631

4320-00-001-2631 · Item name not on file

4320-00-001-2632

4320-00-001-2632 · Item name not on file

4320-00-001-3377

4320-00-001-3377 · Item name not on file

4320-00-001-3384

4320-00-001-3384 · Item name not on file

Frequently Asked Questions

What is NSN 4320-01-688-3645?

NSN 4320-01-688-3645 is a Ring,wearing, manufactured by E. P. Barrus Limited Div Special Products, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-688-3645?

NSN 4320-01-688-3645 has 1 manufacturer part number on file: 803751002 (E. P. Barrus Limited Div Special Products).

What are the specifications of 803751002?

Key specifications for 803751002: Special Features: LINER-PUMP HOUSING USED ON MARINE OUTBOARD ENGINE; Part Name Assigned by Controlling Agency: RING,WEARING. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-688-3645 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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