NSN 4820-01-240-4751 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-240-4751. Manufacturer of record part number: 31110-1.
Also searched as4820-01-240-4751 ·
4820012404751 ·
NIIN 012404751 ·
01-240-4751 ·
FSC 4820 Valves, Nonpowered · CAGE 06177 · 31110-1
Material Document and Classification: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE
Material: ALUMINUM ALLOY
1 manufacturer part number on file
Manufacturer of record: Pneudraulics, Inc.
Identification
NSN: 4820-01-240-4751
NIIN: 012404751
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 31110-1
Manufacturer: Pneudraulics, Inc.
General Description
The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-240-4751, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pneudraulics, 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-240-4751
Primary Part Number
31110-1
Item Name
Diaphragm,valve,flat
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Pneudraulics, Inc.
Status
ACTIVE
Material Document and Classification
QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE
Material
ALUMINUM ALLOY
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
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5305-01-443-2406POSSIBLE MATCH
SCREW,MACHINE
Possible match (shared part number)
5342-01-458-139531110-1POSSIBLE MATCH
MOUNT,RESILIENT,WEAPON SYSTEM
Possible match (shared part number)Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
1670-01-487-077711-1-900-3POSSIBLE MATCH
PARACHUTE,PERSONNEL
Possible match (shared part number)W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center
NSN 4820-01-240-4751 is a Diaphragm,valve,flat, manufactured by Pneudraulics, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-240-4751?
NSN 4820-01-240-4751 has 1 manufacturer part number on file: 31110-1 (Pneudraulics, Inc.).
What NSN replaces 4820-01-240-4751?
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-443-2406, 5342-01-458-1395, 1670-01-487-0777. Verify interchangeability with system specifications before substitution.
What are the specifications of 31110-1?
Key specifications for 31110-1: Material Document and Classification: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE; Special Features: USED ON NSN 4820011879232 VALVE,B-1B AIRCRAFT; Material: ALUMINUM ALLOY. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-240-4751 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.