PartsTable TECHNICAL DATA SHEET

NSN 4820-01-643-8437Government record, cited

Stem, Needle Valve4820-01-643-8437

NSN 4820-01-643-8437 · NIIN 016438437 · Part number 4A-NP6LR-EPR-SSP-R

Parker-Hannifin Corporation Div Instrumentation Products Division · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 54938

Government record, cited

NSN 4820-01-643-8437 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-643-8437. Manufacturer of record part number: 4A-NP6LR-EPR-SSP-R.

Also searched as 4820-01-643-8437 · 4820016438437 · NIIN 016438437 · 01-643-8437 · FSC 4820 Valves, Nonpowered · CAGE 54938 · 4A-NP6LR-EPR-SSP-R

Nearby stock numbers ← 4820-01-643-8399 Guide, Valve Stem · 4820-01-643-8438 Parts Kit, Butterfly Valve →

4820-01-643-8437 — Valves, Nonpowered

Features

Stem,needle Valve — FSC 4820
Valve Size for Which Designed: 0.250 INCHES IN
Material: STEEL CORROSION RESISTING
1 manufacturer part number on file
Manufacturer of record: Parker-Hannifin Corporation Div Instrumentation Products Division

Identification

NSN: 4820-01-643-8437
NIIN: 016438437
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 4A-NP6LR-EPR-SSP-R
Manufacturer: Parker-Hannifin Corporation Div Instrumentation Products Division

General Description

The Stem,needle Valve, cataloged under National Stock Number 4820-01-643-8437, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Div Instrumentation Products Division. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-643-8437
Primary Part Number	4A-NP6LR-EPR-SSP-R
Item Name	Stem,needle Valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Parker-Hannifin Corporation Div Instrumentation Products Division
Status	ACTIVE
Valve Size for Which Designed	0.250 INCHES IN
Material	STEEL CORROSION RESISTING

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
4A-NP6LR-EPR-SSP-R PRIMARY	Parker-Hannifin Corporation Div Instrumentation Products Division (USA)

Reference documents

Reference	Meaning
4A-NP6LR-EPR-SSP-R	3/9 Design control — primary reference Technical Controls Inc.

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

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

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-643-8437?

NSN 4820-01-643-8437 is a Stem,needle Valve, manufactured by Parker-Hannifin Corporation Div Instrumentation Products Division, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-643-8437?

NSN 4820-01-643-8437 has 1 manufacturer part number on file: 4A-NP6LR-EPR-SSP-R (Parker-Hannifin Corporation Div Instrumentation Products Division).

What are the specifications of 4A-NP6LR-EPR-SSP-R?

Key specifications for 4A-NP6LR-EPR-SSP-R: Valve Size for Which Designed: 0.250 INCHES IN; Part Name Assigned by Controlling Agency: NEEDLE VALVE; Material: STEEL CORROSION RESISTING. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-643-8437 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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