NSN 4820-01-277-5522 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-277-5522. Manufacturer of record part number: C13373-1/2-PIECE 12.
Manufacturer of record: Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Identification
NSN: 4820-01-277-5522
NIIN: 012775522
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: C13373-1/2-PIECE 12
Manufacturer: Anderson Greenwood Lp Dba Anderson Greenwood Crosby
General Description
The Cap,valve, cataloged under National Stock Number 4820-01-277-5522, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Cap,valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Anderson Greenwood Lp Dba Anderson Greenwood Crosby (CAGE 01343)
Technical Specifications
Parameter
Value
NSN
4820-01-277-5522
Primary Part Number
C13373-1/2-PIECE 12
Item Name
Cap,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-277-5607C13373-1/2-PIECE 5POSSIBLE MATCH
GUIDE,VALVE STEM
Possible match (shared part number)Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-01-283-9684C13373 20 1.50IN ITEM 11POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-01-284-4917C13373 20 1.50IN ITEM 3POSSIBLE MATCH
BALL,VALVE,PORTED
Possible match (shared part number)Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-01-317-4359C13373 1.25IPSSET25PSI FLGE BRZPOSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-01-373-2648FIG 20-2IN SET 100 PSIPOSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
Reference documents
Reference
Meaning
C13373
5/9Secondary reference
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Related Parts
4820-01-277-5607POSSIBLE MATCH
GUIDE,VALVE STEM
C13373-1/2-PIECE 5
4820-01-283-9684POSSIBLE MATCH
STEM,FLUID VALVE
C13373 20 1.50IN ITEM 11
4820-01-284-4917POSSIBLE MATCH
BALL,VALVE,PORTED
C13373 20 1.50IN ITEM 3
4820-01-317-4359POSSIBLE MATCH
VALVE,SAFETY RELIEF
C13373 1.25IPSSET25PSI FLGE BRZ
4820-01-373-2648POSSIBLE MATCH
VALVE,SAFETY RELIEF
FIG 20-2IN SET 100 PSI
4820-01-433-8218POSSIBLE MATCH
STEM,FLUID VALVE
Frequently Asked Questions
What is NSN 4820-01-277-5522?
NSN 4820-01-277-5522 is a Cap,valve, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-277-5522?
NSN 4820-01-277-5522 has 1 manufacturer part number on file: C13373-1/2-PIECE 12 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
What NSN replaces 4820-01-277-5522?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-277-5607, 4820-01-283-9684, 4820-01-284-4917. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-277-5522 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.