NSN 4820-00-767-6502 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-767-6502. Manufacturer of record part number: 20522-1.
The Stem,needle Valve, cataloged under National Stock Number 4820-00-767-6502, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Grove Valve Operations. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4820-00-767-6502
Primary Part Number
20522-1
Item Name
Stem,needle Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Grove Valve Operations
Status
ACTIVE
Surface Treatment
ZINC
Material
STEEL
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.
4820-01-026-8204POSSIBLE MATCH
STEM,NEEDLE VALVE
Possible match (shared part number)
5330-01-193-0295POSSIBLE MATCH
PARTS KIT,SEAL REPLACEMENT,MECHA
Possible match (shared part number)
4820-01-398-9839POSSIBLE MATCH
STEM,NEEDLE VALVE
Possible match (shared part number)
5365-01-592-128913046221POSSIBLE MATCH
BUSHING,SLEEVE
Possible match (shared part number)Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
NSN 4820-00-767-6502 is a Stem,needle Valve, manufactured by Grove Valve Operations, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-767-6502?
NSN 4820-00-767-6502 has 1 manufacturer part number on file: 20522-1 (Grove Valve Operations).
What NSN replaces 4820-00-767-6502?
5 possible matches (shared part number, not a government interchangeability claim): 4820-01-026-8204, 5330-01-193-0295, 4820-01-398-9839. Verify interchangeability with system specifications before substitution.
What are the specifications of 20522-1?
Key specifications for 20522-1: Overall Length: 1.436 INCHES MINIMUM AND 1.441 INCHES MAXIMUM IN; Surface Treatment: ZINC; Material: STEEL. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-767-6502 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.