General Characteristics Item Description: NICKEL COPPER,QQ-N-281,CLASS A; 2.996 IN. MIN,2.998 O/A LG,1.875 IN. W,0.625 IN. H; CENTER HOLE COUNTERBORED,0.656 IN. DIA,1.250 IN. COUNTERBORE DIA,0.391 IN. COUNTERBORE DEPTH; FOUR COUNTERBORED HOLES,0.281 IN. DIA,0.406 IN. COUNTERBORE DIA,0.281 IN. COUNTERBORE DEPTH,IRREGULARLY SPACED; TWO HOLES 0.375 IN. DIA IRREGULARLY SPACED W/NOTCHES 0.062 IN. W BY 0.031 IN. DEEP; STOP IS MARKED OPEN,OPEN,SHUT,SHUT; APPLICABLE TO HULL AND BACKUP VALVE,1.500 IN. SIZE IN
Identification
NSN: 4820-01-087-2232
NIIN: 010872232
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
General Description
The Indicator Stop,positioner, cataloged under National Stock Number 4820-01-087-2232, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-087-2232
Item Name
Indicator Stop,positioner
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
General Characteristics Item Description
NICKEL COPPER,QQ-N-281,CLASS A; 2.996 IN. MIN,2.998 O/A LG,1.875 IN. W,0.625 IN. H; CENTER HOLE COUNTERBORED,0.656 IN. DIA,1.250 IN. COUNTERBORE DIA,0.391 IN. COUNTERBORE DEPTH; FOUR COUNTERBORED HOLES,0.281 IN. DIA,0.406 IN. COUNTERBORE DIA,0.281 IN. COUNTERBORE DEPTH,IRREGULARLY SPACED; TWO HOLES 0.375 IN. DIA IRREGULARLY SPACED W/NOTCHES 0.062 IN. W BY 0.031 IN. DEEP; STOP IS MARKED OPEN,OPEN,SHUT,SHUT; APPLICABLE TO HULL AND BACKUP VALVE,1.500 IN. SIZE IN
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 Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-113-9275803-4385050 PIECE 107POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Naval Ship Systems Command
4820-01-114-0094803-4385050 PIECE 101POSSIBLE MATCH
ADAPTER STEM,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-115-9857803-4385050 PIECE 57POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-123-3929803-4385050 PIECE 68POSSIBLE MATCH
INSERT,BODY,ASSEMBLY,VALVE
Possible match (shared part number)Hunt Valve Company, Inc.
4820-01-148-2847803-4385050 ASSY TAPOSSIBLE MATCH
TOOL SET,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-386-2182803-4385050 PIECE 106POSSIBLE MATCH
RING,INCATOR,VALVE OPENING
Possible match (shared part number)Naval Ship Systems Command
4820-01-422-5108POSSIBLE MATCH
TAILPIECE,VALVE
Possible match (shared part number)
3120-01-550-8881POSSIBLE MATCH
BEARING,WASHER,THRUST
Possible match (shared part number)
5310-01-659-4539803-4385050-12POSSIBLE MATCH
NUT,PLAIN,ROUND
Possible match (shared part number)Naval Ship Systems Command
3120-01-706-9985POSSIBLE MATCH
BEARING,WASHER,THRUST
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
803-4385050 PIECE 16
3/2Design control — primary reference
U.S. Government activity
810-4385050 PIECE 16
3/2Design control — primary reference
U.S. Government activity
803-4385050
D/9Drawing number reference only
U.S. Government activity
803-4385050 PIE
5/9Secondary reference
U.S. Government activity
Related Parts
3040-01-113-9275POSSIBLE MATCH
SHAFT,STRAIGHT
803-4385050 PIECE 107
4820-01-114-0094POSSIBLE MATCH
ADAPTER STEM,VALVE
803-4385050 PIECE 101
4820-01-115-9857POSSIBLE MATCH
DISK,VALVE
803-4385050 PIECE 57
4820-01-123-3929POSSIBLE MATCH
INSERT,BODY,ASSEMBLY,VALVE
803-4385050 PIECE 68
4820-01-148-2847POSSIBLE MATCH
TOOL SET,VALVE
803-4385050 ASSY TA
4820-01-386-2182POSSIBLE MATCH
RING,INCATOR,VALVE OPENING
803-4385050 PIECE 106
4820-01-422-5108POSSIBLE MATCH
TAILPIECE,VALVE
3120-01-550-8881POSSIBLE MATCH
BEARING,WASHER,THRUST
5310-01-659-4539POSSIBLE MATCH
NUT,PLAIN,ROUND
803-4385050-12
3120-01-706-9985POSSIBLE MATCH
BEARING,WASHER,THRUST
Frequently Asked Questions
What is NSN 4820-01-087-2232?
NSN 4820-01-087-2232 is a Indicator Stop,positioner, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-087-2232?
10 possible matches (shared part number, not a government interchangeability claim): 3040-01-113-9275, 4820-01-114-0094, 4820-01-115-9857. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-087-2232?
Key specifications for 4820-01-087-2232: General Characteristics Item Description: NICKEL COPPER,QQ-N-281,CLASS A; 2.996 IN. MIN,2.998 O/A LG,1.875 IN. W,0.625 IN. H; CENTER HOLE COUNTERBORED,0.656 IN. DIA,1.250 IN. COUNTERBORE DIA,0.391 IN. COUNTERBORE DEPTH; FOUR COUNTERBORED HOLES,0.281 IN. DIA,0.406 IN. COUNTERBORE DIA,0.281 IN. COUNTERBORE DEPTH,IRREGULARLY SPACED; TWO HOLES 0.375 IN. DIA IRREGULARLY SPACED W/NOTCHES 0.062 IN. W BY 0.031 IN. DEEP; STOP IS MARKED OPEN,OPEN,SHUT,SHUT; APPLICABLE TO HULL AND BACKUP VALVE,1.500 IN. SIZE IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-087-2232 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.