Ring, Wearing4320-00-202-9987

NSN 4320-00-202-9987 · NIIN 002029987

FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors

Government record, cited

Also searched as 4320-00-202-9987 · 4320002029987 · NIIN 002029987 · 00-202-9987 · FSC 4320 Power and Hand Pumps · 08-999-591 · 08-999-591-00-001

Nearby stock numbers ← 4320-00-202-9986 Ring, Wearing · 4320-00-203-0079 →

Features

Ring,wearing — FSC 4320
Corner Shape: SQUARE ALL CORNERS
Body Style: PLAIN W/INTERNAL FLANGE
Body Outside Diameter: 5.007 INCHES NOMINAL IN
Material Document and Classification: MIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE
Internal Flange Inside Diameter: 4.391 INCHES NOMINAL IN
Body Inside Diameter: 4.625 INCHES NOMINAL IN
Material: COPPER ALLOY

Identification

NSN: 4320-00-202-9987
NIIN: 002029987
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors

General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-202-9987, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4320-00-202-9987
Item Name	Ring,wearing
FSC / FSG	4320 / 43 — Power and Hand Pumps
Status	ACTIVE
Corner Shape	SQUARE ALL CORNERS
Body Style	PLAIN W/INTERNAL FLANGE
Body Outside Diameter	5.007 INCHES NOMINAL IN
Material Document and Classification	MIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE
Internal Flange Inside Diameter	4.391 INCHES NOMINAL IN
Body Inside Diameter	4.625 INCHES NOMINAL IN
Material	COPPER ALLOY
Internal Flange Width	0.015 INCHES NOMINAL IN

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

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

Reference documents

Reference	Meaning
08-999-591	3/9 Design control — primary reference U.S. Government activity
08-999-591-00-001	5/9 Secondary 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 4320-00-202-9987?

NSN 4320-00-202-9987 is a Ring,wearing, classified under FSC 4320, Power and Hand Pumps. Status: active.

What are the specifications of 4320-00-202-9987?

Key specifications for 4320-00-202-9987: Corner Shape: SQUARE ALL CORNERS; Body Style: PLAIN W/INTERNAL FLANGE; Body Outside Diameter: 5.007 INCHES NOMINAL IN; Material Document and Classification: MIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4320-00-202-9987 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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