PartsTable TECHNICAL DATA SHEET

NSN 4820-01-671-4777Government record, cited

Piston, Valve4820-01-671-4777

NSN 4820-01-671-4777 · NIIN 016714777 · Part number GSS 1793UK

Austin Hardware & Supply, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 7B735

Government record, cited

NSN 4820-01-671-4777 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-671-4777. Manufacturer of record part number: GSS 1793UK.

Also searched as 4820-01-671-4777 · 4820016714777 · NIIN 016714777 · 01-671-4777 · FSC 4820 Valves, Nonpowered · CAGE 7B735 · GSS 1793UK · 80086990

Nearby stock numbers ← 4820-01-671-4546 Body, Valve · 4820-01-671-4801 Valve Assembly →

4820-01-671-4777 — Valves, Nonpowered

Features

Piston,valve — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Austin Hardware & Supply, Inc.

Identification

NSN: 4820-01-671-4777
NIIN: 016714777
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: GSS 1793UK
Manufacturer: Austin Hardware & Supply, Inc.

General Description

The Piston,valve, cataloged under National Stock Number 4820-01-671-4777, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Austin Hardware & Supply, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Catalog Facts

Item Name	Piston,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Austin Hardware & Supply, Inc. (CAGE 7B735)

Technical Specifications

Parameter	Value
NSN	4820-01-671-4777
Primary Part Number	GSS 1793UK
Item Name	Piston,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Austin Hardware & Supply, Inc.
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
GSS 1793UK PRIMARY	Austin Hardware & Supply, Inc. (USA)

Reference documents

Reference	Meaning
80086990	7/2 Vendor item drawing reference Grove U.s. Llc Dba Grove Us Llc

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 4820-01-671-4777?

NSN 4820-01-671-4777 is a Piston,valve, manufactured by Austin Hardware & Supply, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-671-4777?

NSN 4820-01-671-4777 has 1 manufacturer part number on file: GSS 1793UK (Austin Hardware & Supply, Inc.).

Is NSN 4820-01-671-4777 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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