Material Document and Classification: MIL-B-15939,COM+2 MIL SPEC SINGLE MATERIAL RESPONSE
Material: ALUMINUM ALLOY
Identification
NSN: 4820-01-133-0245
NIIN: 011330245
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
General Description
The Stem,fluid Valve, cataloged under National Stock Number 4820-01-133-0245, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-133-0245
Item Name
Stem,fluid Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Largest Outside Diameter
0.868 INCHES NOMINAL IN
Stem Actuating End Type
THREADED EXTERNALLY
Material Document and Classification
MIL-B-15939,COM+2 MIL SPEC SINGLE MATERIAL RESPONSE
Material
ALUMINUM ALLOY
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.
5310-01-134-13382640-503 PIECE 13POSSIBLE MATCH
NUT,RETAINING,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-135-25572640-503 PIECE 80POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-135-39092640-503 PIECE 10POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-136-08522640-503 PIECE 9POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-141-72322640-503 PIECE 81POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-142-22902640-503 PIECE 2,6POSSIBLE MATCH
PARTS KIT,BALL VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-144-37932640-503 PIECE11POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-147-41422640-503 PIECE 6,76POSSIBLE MATCH
PARTS KIT,BALL VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-187-1217845-1968265 PIECE 75,5 3/8INPOSSIBLE MATCH
PARTS KIT,BALL VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-213-80122640-501 ASSY HPOSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
845-196265
D/9Drawing number reference only
U.S. Government activity
2640-503 PIECE 79
3/2Design control — primary reference
U.S. Government activity
2640-503
D/9Drawing number reference only
U.S. Government activity
845-196265 PIECE 79
3/2Design control — primary reference
U.S. Government activity
Related Parts
5310-01-134-1338POSSIBLE MATCH
NUT,RETAINING,VALVE
2640-503 PIECE 13
4820-01-135-2557POSSIBLE MATCH
STEM,FLUID VALVE
2640-503 PIECE 80
4820-01-135-3909POSSIBLE MATCH
STEM,FLUID VALVE
2640-503 PIECE 10
4820-01-136-0852POSSIBLE MATCH
STEM,FLUID VALVE
2640-503 PIECE 9
4820-01-141-7232POSSIBLE MATCH
STEM,FLUID VALVE
2640-503 PIECE 81
4820-01-142-2290POSSIBLE MATCH
PARTS KIT,BALL VALVE
2640-503 PIECE 2,6
4820-01-144-3793POSSIBLE MATCH
STEM,FLUID VALVE
2640-503 PIECE11
4820-01-147-4142POSSIBLE MATCH
PARTS KIT,BALL VALVE
2640-503 PIECE 6,76
4820-01-187-1217POSSIBLE MATCH
PARTS KIT,BALL VALVE
845-1968265 PIECE 75,5 3/8IN
4820-01-213-8012POSSIBLE MATCH
VALVE,BALL
2640-501 ASSY H
Frequently Asked Questions
What is NSN 4820-01-133-0245?
NSN 4820-01-133-0245 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-133-0245?
10 possible matches (shared part number, not a government interchangeability claim): 5310-01-134-1338, 4820-01-135-2557, 4820-01-135-3909. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-133-0245?
Key specifications for 4820-01-133-0245: Largest Outside Diameter: 0.868 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY; Material Document and Classification: MIL-B-15939,COM+2 MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 4.250 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-133-0245 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.