NSN 4820-01-120-5677 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-120-5677. Manufacturer of record part number: 2001-279.
General Characteristics Item Description: SPRING LOADED HEX BOLT MTD ON A 0.240 IN. DIA ROD;FOR USE ON BALL VALVE;ALUMINUM AND STEEL;0.500-20 UNF-2A BOLT THD;2.220 IN. LG A
2 manufacturer part numbers on file
Manufacturer of record: Donaldson Company, Inc.
Identification
NSN: 4820-01-120-5677
NIIN: 011205677
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2001-279
Manufacturer: Donaldson Company, Inc.
General Description
The Locking Bolt,valve, cataloged under National Stock Number 4820-01-120-5677, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Donaldson Company, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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.
Technical Specifications
Parameter
Value
NSN
4820-01-120-5677
Primary Part Number
2001-279
Item Name
Locking Bolt,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Donaldson Company, Inc.
Status
ACTIVE
General Characteristics Item Description
SPRING LOADED HEX BOLT MTD ON A 0.240 IN. DIA ROD;FOR USE ON BALL VALVE;ALUMINUM AND STEEL;0.500-20 UNF-2A BOLT THD;2.220 IN. LG A
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.
4820-01-120-88984110-132POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Donaldson Company, Inc.
4730-01-121-63981009-1228POSSIBLE MATCH
COUPLING,TUBE
Possible match (shared part number)Donaldson Company, Inc.
4330-01-121-63994110-133POSSIBLE MATCH
VALVE,CHECK,FILTER
Possible match (shared part number)Donaldson Company, Inc.
4330-01-127-51711009-1225POSSIBLE MATCH
QUILL,LARGE
Possible match (shared part number)Donaldson Company, Inc.
4330-01-343-8537POSSIBLE MATCH
FILTER ASSEMBLY,FLUID
Possible match (shared part number)
5305-01-470-35621009-1448POSSIBLE MATCH
SETSCREW
Possible match (shared part number)Donaldson Company, Inc.
NSN 4820-01-120-5677 is a Locking Bolt,valve, manufactured by Donaldson Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-120-5677?
NSN 4820-01-120-5677 has 2 manufacturer part numbers on file: 2001-279 (Donaldson Company, Inc.), 911-170 ITEM 37 (Donaldson Company, Inc.).
What NSN replaces 4820-01-120-5677?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-120-8898, 4730-01-121-6398, 4330-01-121-6399. Verify interchangeability with system specifications before substitution.
What are the specifications of 2001-279?
Key specifications for 2001-279: General Characteristics Item Description: SPRING LOADED HEX BOLT MTD ON A 0.240 IN. DIA ROD;FOR USE ON BALL VALVE;ALUMINUM AND STEEL;0.500-20 UNF-2A BOLT THD;2.220 IN. LG A. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-120-5677 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.