NSN 4820-01-156-7235 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-156-7235. Manufacturer of record part number: M-171A.
Also searched as4820-01-156-7235 ·
4820011567235 ·
NIIN 011567235 ·
01-156-7235 ·
FSC 4820 Valves, Nonpowered · CAGE 16712 · M-171A · M-171-A · H-2907 PC 90 · H-2907
The Sleeve,directional Control Linea, cataloged under National Stock Number 4820-01-156-7235, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Siemens Energy, Inc.. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Sleeve,directional Control Linea
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Siemens Energy, Inc. (CAGE 16712)
Technical Specifications
Parameter
Value
NSN
4820-01-156-7235
Primary Part Number
M-171A
Item Name
Sleeve,directional Control Linea
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Siemens Energy, Inc.
Status
ACTIVE
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 Items1
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
8040-01-668-1456M171APOSSIBLE MATCH
LOCKING COMPOUND
Possible match (shared part number)Lockheed Martin Corporation
NSN 4820-01-156-7235 is a Sleeve,directional Control Linea, manufactured by Siemens Energy, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-156-7235?
NSN 4820-01-156-7235 has 2 manufacturer part numbers on file: M-171A (Siemens Energy, Inc.), H-2907 (Siemens Energy, Inc.).
What NSN replaces 4820-01-156-7235?
1 possible match (shared part number, not a government interchangeability claim): 8040-01-668-1456. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-156-7235 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.