PartsTable TECHNICAL DATA SHEET

NSN 4820-01-155-6955Government record, cited

Disk, Valve4820-01-155-6955

NSN 4820-01-155-6955 · NIIN 011556955 · Part number 2BA56

Oshkosh Defense Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 75Q65

Government record, cited

NSN 4820-01-155-6955 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-155-6955. Manufacturer of record part number: 2BA56.

Also searched as 4820-01-155-6955 · 4820011556955 · NIIN 011556955 · 01-155-6955 · FSC 4820 Valves, Nonpowered · CAGE 75Q65 · 2BA56 · 15071-A

Nearby stock numbers ← 4820-01-155-6954 Disk, Valve · 4820-01-155-6972 →

4820-01-155-6955 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Outside Diameter: 4.840 INCHES NOMINAL IN
Style Designator: PLAIN
Inside Diameter: 3.013 INCHES NOMINAL IN
Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
1 manufacturer part number on file
Manufacturer of record: Oshkosh Defense Llc

Identification

NSN: 4820-01-155-6955
NIIN: 011556955
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2BA56
Manufacturer: Oshkosh Defense Llc

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-155-6955, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-155-6955
Primary Part Number	2BA56
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Oshkosh Defense Llc
Status	ACTIVE
Outside Diameter	4.840 INCHES NOMINAL IN
Style Designator	PLAIN
Inside Diameter	3.013 INCHES NOMINAL IN
Material	RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR

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
2BA56	Oshkosh Defense Llc (USA)

Reference documents

Reference	Meaning
15071-A	3/9 Design control — primary reference Allegheny Valve Co
2BA56	5/9 Secondary reference Oshkosh Corp

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 4820-01-155-6955?

NSN 4820-01-155-6955 is a Disk,valve, manufactured by Oshkosh Defense Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-155-6955?

NSN 4820-01-155-6955 has 1 manufacturer part number on file: 2BA56 (Oshkosh Defense Llc).

What are the specifications of 2BA56?

Key specifications for 2BA56: Overall Height: 0.600 INCHES NOMINAL IN; Outside Diameter: 4.840 INCHES NOMINAL IN; Style Designator: PLAIN; Inside Diameter: 3.013 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-155-6955 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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