Valve, Check4820-01-598-0350

NSN 4820-01-598-0350 · NIIN 015980350 · Part number A1020530026

W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 1B318

Government record, cited

NSN 4820-01-598-0350 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-598-0350. Manufacturer of record part number: A1020530026.

Also searched as 4820-01-598-0350 · 4820015980350 · NIIN 015980350 · 01-598-0350 · FSC 4820 Valves, Nonpowered · CAGE 1B318 · A1020530026

Nearby stock numbers ← 4820-01-598-0349 Valve, Check · 4820-01-598-0438 Ball, Valve, Ported →

4820-01-598-0350 — Valves, Nonpowered

Features

Valve,check — FSC 4820
1 manufacturer part number on file
Manufacturer of record: W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division

Identification

NSN: 4820-01-598-0350
NIIN: 015980350
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: A1020530026
Manufacturer: W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division

General Description

The Valve,check, cataloged under National Stock Number 4820-01-598-0350, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-598-0350
Primary Part Number	A1020530026
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	W.w. Williams Company, the Llc Dba W W Williams Company-Midwest 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)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
A1020530026 PRIMARY	W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division (USA)

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 4820-01-598-0350?

NSN 4820-01-598-0350 is a Valve,check, manufactured by W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-598-0350?

NSN 4820-01-598-0350 has 1 manufacturer part number on file: A1020530026 (W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division).

What are the specifications of A1020530026?

Key specifications for A1020530026: Part Name Assigned by Controlling Agency: VALVE COLLET; End Item Identification: REAR ALXE GRO. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-598-0350 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.

PartsTable Design LLC · partstable.com