NSN 4820-00-372-0727 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-372-0727. Manufacturer of record part number: 8946.
Manufacturer of record: Derbyshire Machine & Tool Co
Identification
NSN: 4820-00-372-0727
NIIN: 003720727
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 8946
Manufacturer: Derbyshire Machine & Tool Co
General Description
The Disk,plug Type,check, cataloged under National Stock Number 4820-00-372-0727, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Machine & Tool Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4820-00-372-0727
Primary Part Number
8946
Item Name
Disk,plug Type,check
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Derbyshire Machine & Tool Co
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5315-00-559-88408946POSSIBLE MATCH
KEY,WOODRUFF
Possible match (shared part number)Ge Aviation Systems Llc
4920-00-740-02678946POSSIBLE MATCH
POST,GENERATOR
Possible match (shared part number)Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto
5950-00-864-8129POSSIBLE MATCH
TRANSFORMER,POWER
Possible match (shared part number)
5340-01-133-07538946POSSIBLE MATCH
CLAMP,LOOP
Possible match (shared part number)Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5962-01-183-93946134457-1POSSIBLE MATCH
MICROCIRCUIT,DIGITAL
Possible match (shared part number)Lockheed Martin Corporation Div Rotary and Mission Systems
NSN 4820-00-372-0727 is a Disk,plug Type,check, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-372-0727?
NSN 4820-00-372-0727 has 1 manufacturer part number on file: 8946 (Derbyshire Machine & Tool Co).
What NSN replaces 4820-00-372-0727?
5 possible matches (shared part number, not a government interchangeability claim): 5315-00-559-8840, 4920-00-740-0267, 5950-00-864-8129. Verify interchangeability with system specifications before substitution.
What are the specifications of 8946?
Key specifications for 8946: End Item Identification: VALVE CRS 3.00IPS. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-372-0727 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.