Disk, Valve4820-01-131-7866

NSN 4820-01-131-7866 · NIIN 011317866 · Part number B71185

O T S I · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 05825

Government record, cited

NSN 4820-01-131-7866 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-131-7866. Manufacturer of record part number: B71185.

Also searched as 4820-01-131-7866 · 4820011317866 · NIIN 011317866 · 01-131-7866 · FSC 4820 Valves, Nonpowered · CAGE 05825 · B71185

Nearby stock numbers ← 4820-01-131-7865 Disk, Valve · 4820-01-131-8356 Valve, Flow Control →

4820-01-131-7866 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Shank Diameter: 0.535 INCHES NOMINAL IN
Seat Angle: 80.0 DEGREES NOMINAL
Material: STEEL CORROSION RESISTING
1 manufacturer part number on file
Manufacturer of record: O T S I

Identification

NSN: 4820-01-131-7866
NIIN: 011317866
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: B71185
Manufacturer: O T S I

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-131-7866, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is O T S I. Government technical data includes 3 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	4820-01-131-7866
Primary Part Number	B71185
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	O T S I
Status	ACTIVE
Shank Diameter	0.535 INCHES NOMINAL IN
Seat Angle	80.0 DEGREES NOMINAL
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
B71185 PRIMARY	O T S I (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 4820-01-131-7866?

NSN 4820-01-131-7866 is a Disk,valve, manufactured by O T S I, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-131-7866?

NSN 4820-01-131-7866 has 1 manufacturer part number on file: B71185 (O T S I).

What are the specifications of B71185?

Key specifications for B71185: Shank Diameter: 0.535 INCHES NOMINAL IN; Overall Height: 1.625 INCHES NOMINAL IN; Seat Angle: 80.0 DEGREES NOMINAL; Material: STEEL CORROSION RESISTING. 3 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-131-7866 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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