Valve, Safety Relief4820-01-440-4251

NSN 4820-01-440-4251 · NIIN 014404251 · Part number 1GR150-P-6W-S-377

Integrated Hydraulics Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 0P8V4

Government record, cited

NSN 4820-01-440-4251 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-440-4251. Manufacturer of record part number: 1GR150-P-6W-S-377.

Also searched as 4820-01-440-4251 · 4820014404251 · NIIN 014404251 · 01-440-4251 · FSC 4820 Valves, Nonpowered · CAGE 0P8V4 · 1GR150-P-6W-S-377

Nearby stock numbers ← 4820-01-440-4155 Stem, Fluid Valve · 4820-01-440-4323 Cap, Valve →

4820-01-440-4251 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Material: STEEL OVERALL
1 manufacturer part number on file
Manufacturer of record: Integrated Hydraulics Inc

Identification

NSN: 4820-01-440-4251
NIIN: 014404251
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1GR150-P-6W-S-377
Manufacturer: Integrated Hydraulics Inc

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-440-4251, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Integrated Hydraulics Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-440-4251
Primary Part Number	1GR150-P-6W-S-377
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Integrated Hydraulics Inc
Status	ACTIVE
Material	STEEL OVERALL

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
1GR150-P-6W-S-377 PRIMARY	Integrated Hydraulics Inc (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 4820-01-440-4251?

NSN 4820-01-440-4251 is a Valve,safety Relief, manufactured by Integrated Hydraulics Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-440-4251?

NSN 4820-01-440-4251 has 1 manufacturer part number on file: 1GR150-P-6W-S-377 (Integrated Hydraulics Inc).

What are the specifications of 1GR150-P-6W-S-377?

Key specifications for 1GR150-P-6W-S-377: Special Features: VALVE 0.750 INCH PORT SIZE; LEAKPROOF SCREW ADJUSTMENT; OVERALL LENGTH - 146.0 MM MAX MM; Material: STEEL OVERALL. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-440-4251 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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