Naval Ship Systems Command · NSN 4820-01-125-9821 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-125-9821 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-125-9821. Primary manufacturer part number: 803-2177142-5XX-23.
4820-01-125-9821 — No Item Name Available illustration
Features
Handwheel Locknut,valve — FSC 4820
General Characteristics Item Description: STEEL,CARBON COLD DRAWN ASTM A-108,GRADE 1113; 4.000 IN. SQUARE; 0.688 IN. THK; BOTTOM 2.625-12UN-2B THREADS 0.375 IN. DEEP; CENTER 0.250 I. DIA DRILL; ONE HOLE 0.257 IN. DIA DRILL ON 2.156 IN DBC IN
2 verified cross-references
Primary manufacturer: Naval Ship Systems Command
Applications
Flow control in piping systems
Pressure regulation
Steam and fluid isolation
General Description
The Handwheel Locknut,valve, cataloged under National Stock Number 4820-01-125-9821, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-125-9821
Primary Part Number
803-2177142-5XX-23
Item Name
Handwheel Locknut,valve
FSC / FSG
4820 / 48 — No Item Name Available
Manufacturer
Naval Ship Systems Command
Status
ACTIVE
General Characteristics Item Description
STEEL,CARBON COLD DRAWN ASTM A-108,GRADE 1113; 4.000 IN. SQUARE; 0.688 IN. THK; BOTTOM 2.625-12UN-2B THREADS 0.375 IN. DEEP; CENTER 0.250 I. DIA DRILL; ONE HOLE 0.257 IN. DIA DRILL ON 2.156 IN DBC IN
NSN 4820-01-125-9821 is a Handwheel Locknut,valve, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.
What are the part numbers for NSN 4820-01-125-9821?
NSN 4820-01-125-9821 has 2 cross-referenced part numbers: 803-2177142-5XX-23 (Naval Ship Systems Command), 803-2177142 (Naval Ship Systems Command).
What NSN replaces 4820-01-125-9821?
There are 11 known substitutes for 4820-01-125-9821: 4820-01-067-9924, 4820-01-091-2955, 4820-01-091-8124 and 8 more. Verify interchangeability with system specifications before substitution.
What are the specifications of 803-2177142-5XX-23?
Key specifications for 803-2177142-5XX-23: General Characteristics Item Description: STEEL,CARBON COLD DRAWN ASTM A-108,GRADE 1113; 4.000 IN. SQUARE; 0.688 IN. THK; BOTTOM 2.625-12UN-2B THREADS 0.375 IN. DEEP; CENTER 0.250 I. DIA DRILL; ONE HOLE 0.257 IN. DIA DRILL ON 2.156 IN DBC IN. 1 total characteristics are documented in the Federal Logistics Information System.
✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.