PartsTable TECHNICAL DATA SHEET

NSN 4320-01-262-9272Government record, cited

Piston, Pump4320-01-262-9272

NSN 4320-01-262-9272 · NIIN 012629272 · Part number UH-26590

Clayton Manufacturing Company · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 12736

Government record, cited

NSN 4320-01-262-9272 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-262-9272. Manufacturer of record part number: UH-26590.

Also searched as 4320-01-262-9272 · 4320012629272 · NIIN 012629272 · 01-262-9272 · FSC 4320 Power and Hand Pumps · CAGE 12736 · UH-26590 · R-10877 FIG 4-34 · UH26I90

Nearby stock numbers ← 4320-01-262-9174 Rotor, Air Enging · 4320-01-262-9373 Pump Unit, Rotary →

Features

Piston,pump — FSC 4320
2 manufacturer part numbers on file
Manufacturer of record: Clayton Manufacturing Company

Identification

NSN: 4320-01-262-9272
NIIN: 012629272
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: UH-26590
Manufacturer: Clayton Manufacturing Company

General Description

The Piston,pump, cataloged under National Stock Number 4320-01-262-9272, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Clayton Manufacturing Company. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Catalog Facts

Item Name	Piston,pump
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)
Manufacturers	Clayton Manufacturing Company (CAGE 12736)

Technical Specifications

Parameter	Value
NSN	4320-01-262-9272
Primary Part Number	UH-26590
Item Name	Piston,pump
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Clayton Manufacturing Company
Status	ACTIVE

Lifecycle & Compliance

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

Cross-Reference Index

Part Number	Manufacturer
UH-26590 PRIMARY	Clayton Manufacturing Company (USA)
R-10877 FIG 4-34	Clayton Manufacturing Company (USA)

Reference documents

Reference	Meaning
UH26I90	5/9 Secondary reference Clayton Manufacturing Company

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 4320-01-262-9272?

NSN 4320-01-262-9272 is a Piston,pump, manufactured by Clayton Manufacturing Company, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-262-9272?

NSN 4320-01-262-9272 has 2 manufacturer part numbers on file: UH-26590 (Clayton Manufacturing Company), R-10877 FIG 4-34 (Clayton Manufacturing Company).

Is NSN 4320-01-262-9272 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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