NSN 4820-01-156-5550 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-156-5550. Manufacturer of record part number: N56218.
Manufacturer of record: Leslie Controls, Inc. Dba Leslie Controls Inc
Identification
NSN: 4820-01-156-5550
NIIN: 011565550
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: N56218
Manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
General Description
The Gland,valve, cataloged under National Stock Number 4820-01-156-5550, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-156-5550
Primary Part Number
N56218
Item Name
Gland,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Leslie Controls, Inc. Dba Leslie Controls 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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4520-01-432-354656218POSSIBLE MATCH
HEATING ELEMENT,ELECTRICAL,NONIM
Possible match (shared part number)Indeeco Llc Dba Indeeco
4920-01-491-526256218POSSIBLE MATCH
FLOW SWITCH,AIRCRAF
Possible match (shared part number)Electro Impulse Laboratory Inc Dba Electro Impulse Inc
6625-01-500-328856218POSSIBLE MATCH
SENSOR,CURRENT
Possible match (shared part number)Boonton Electronics Corporation Div Boonton Electronics
5310-01-576-704156-218POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Lockheed Martin Corporation
Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Reference documents
Reference
Meaning
56218
5/9Secondary reference
Leslie Controls, Inc. Dba Leslie Controls Inc
19597N PIECE 43
5/9Secondary reference
Leslie Controls, Inc. Dba Leslie Controls Inc
21735N PIECE 43
5/9Secondary reference
Leslie Controls, Inc. Dba Leslie Controls Inc
Related Parts
4520-01-432-3546POSSIBLE MATCH
HEATING ELEMENT,ELECTRICAL,NONIM
56218
4920-01-491-5262POSSIBLE MATCH
FLOW SWITCH,AIRCRAF
56218
6625-01-500-3288POSSIBLE MATCH
SENSOR,CURRENT
56218
5310-01-576-7041POSSIBLE MATCH
WASHER,FLAT
56-218
Frequently Asked Questions
What is NSN 4820-01-156-5550?
NSN 4820-01-156-5550 is a Gland,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-156-5550?
NSN 4820-01-156-5550 has 1 manufacturer part number on file: N56218 (Leslie Controls, Inc. Dba Leslie Controls Inc).
What NSN replaces 4820-01-156-5550?
4 possible matches (shared part number, not a government interchangeability claim): 4520-01-432-3546, 4920-01-491-5262, 6625-01-500-3288. Verify interchangeability with system specifications before substitution.
What are the specifications of N56218?
Key specifications for N56218: End Item Identification: GAS FLOWMETER. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-156-5550 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.