Valve, Vent4820-01-178-4871

NSN 4820-01-178-4871 · NIIN 011784871 · Part number 1660S1-1/2 INCS

Robert H Wager Co Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 79128

Government record, cited

NSN 4820-01-178-4871 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-178-4871. Manufacturer of record part number: 1660S1-1/2 INCS.

Also searched as 4820-01-178-4871 · 4820011784871 · NIIN 011784871 · 01-178-4871 · FSC 4820 Valves, Nonpowered · CAGE 79128 · 1660S1-1/2 INCS

Nearby stock numbers ← 4820-01-178-4869 Valve, Regulating, Fluid Pressure · 4820-01-178-4872 Valve, Vent →

4820-01-178-4871 — Valves, Nonpowered

Features

Valve,vent — FSC 4820
Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS
Material: STEEL BODY
1 manufacturer part number on file
Manufacturer of record: Robert H Wager Co Inc

Identification

NSN: 4820-01-178-4871
NIIN: 011784871
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1660S1-1/2 INCS
Manufacturer: Robert H Wager Co Inc

General Description

The Valve,vent, cataloged under National Stock Number 4820-01-178-4871, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Robert H Wager Co Inc. 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-178-4871
Primary Part Number	1660S1-1/2 INCS
Item Name	Valve,vent
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Robert H Wager Co Inc
Status	ACTIVE
Connection Type	UNTHREADED INTERNAL PIPE ALL ENDS
Material	STEEL BODY

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
1660S1-1/2 INCS PRIMARY	Robert H Wager Co 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 4820-01-178-4871?

NSN 4820-01-178-4871 is a Valve,vent, manufactured by Robert H Wager Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-178-4871?

NSN 4820-01-178-4871 has 1 manufacturer part number on file: 1660S1-1/2 INCS (Robert H Wager Co Inc).

What are the specifications of 1660S1-1/2 INCS?

Key specifications for 1660S1-1/2 INCS: Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS; Material: STEEL BODY. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-178-4871 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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