NSN 4820-00-103-2495 · NIIN 001032495 · Part number 901-9CP
Naval Inventory Control Point Mechanicsburg · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 03950
Government record, cited
NSN 4820-00-103-2495 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-103-2495. Manufacturer of record part number: 901-9CP.
Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
1 manufacturer part number on file
Manufacturer of record: Naval Inventory Control Point Mechanicsburg
Identification
NSN: 4820-00-103-2495
NIIN: 001032495
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 901-9CP
Manufacturer: Naval Inventory Control Point Mechanicsburg
General Description
The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-103-2495, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
4820-00-103-2495
Primary Part Number
901-9CP
Item Name
Diaphragm,valve,flat
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Inventory Control Point Mechanicsburg
Status
ACTIVE
Outside Diameter
2.812 INCHES MAXIMUM IN
Criticality Code Justification
ZZZY
Material
COPPER ALLOY
Reference Number Differentiating Characteristics
CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
S
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3610-00-761-98659019POSSIBLE MATCH
SPRING,GRIP
Possible match (shared part number)Stanley Bostitch Inc Sub of the Stanley Works Corp
6680-00-829-5158901-9POSSIBLE MATCH
DIAPHRAGM ASSEMBLY,VALVE
Possible match (shared part number)Tescom Corp Dba Tescom Div Tescom
4310-01-073-90439019POSSIBLE MATCH
CAP,RETAINING
Possible match (shared part number)American Bristol Industries Inc.
2530-01-158-7503POSSIBLE MATCH
PISTON,HYDRAULIC BRAKE
Possible match (shared part number)
5310-01-364-04859019POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Avox Systems Inc Dba Avox Systems Inc
4820-01-408-24249019POSSIBLE MATCH
PLUG,ROTARY,VALVE
Possible match (shared part number)Cunico Corporation
5998-01-518-66319019POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Smiths Interconnect Inc Div Smiths Interconnect Inc - Tampa
Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
Related Parts
3610-00-761-9865POSSIBLE MATCH
SPRING,GRIP
9019
6680-00-829-5158POSSIBLE MATCH
DIAPHRAGM ASSEMBLY,VALVE
901-9
4310-01-073-9043POSSIBLE MATCH
CAP,RETAINING
9019
2530-01-158-7503POSSIBLE MATCH
PISTON,HYDRAULIC BRAKE
5310-01-364-0485POSSIBLE MATCH
WASHER,FLAT
9019
4820-01-408-2424POSSIBLE MATCH
PLUG,ROTARY,VALVE
9019
5998-01-518-6631POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
9019
5930-01-616-7147POSSIBLE MATCH
SWITCH,ROTARY
Frequently Asked Questions
What is NSN 4820-00-103-2495?
NSN 4820-00-103-2495 is a Diaphragm,valve,flat, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-103-2495?
NSN 4820-00-103-2495 has 1 manufacturer part number on file: 901-9CP (Naval Inventory Control Point Mechanicsburg).
What NSN replaces 4820-00-103-2495?
8 possible matches (shared part number, not a government interchangeability claim): 3610-00-761-9865, 6680-00-829-5158, 4310-01-073-9043. Verify interchangeability with system specifications before substitution.
What are the specifications of 901-9CP?
Key specifications for 901-9CP: Outside Diameter: 2.812 INCHES MAXIMUM IN; Criticality Code Justification: ZZZY; Material: COPPER ALLOY; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-103-2495 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.