NSN 3120-01-122-4875 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-122-4875. Manufacturer of record part number: 810-2178494 PIECE 9.
General Characteristics Item Description: NICKEL-COPPER ALLOY,QQ-N-281,CLASS A; 2.1250 IN. LG; 1.6790 IN. MIN AND 1.6820 IN. MAX BODY OUTSIDE DIAMETER; 2.7500 IN. FLANGE OUTSIDE DIAMETER; 3 DIFFERENT THICKNESSES TO THE FLANGE; 1.0600 IN. MIN AND 1.0630 IN. MAX THICKNESS OF FLANGE; 2 NOTCHES IN FLANGE IN
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 3120-01-122-4875
NIIN: 011224875
FSC: 3120 — Bearings, Plain, Unmounted
FSG: 31 — Bearings
Primary part number: 810-2178494 PIECE 9
Manufacturer: Naval Sea Systems Command
General Description
The Bushing,handwheel, cataloged under National Stock Number 3120-01-122-4875, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3120-01-122-4875
Primary Part Number
810-2178494 PIECE 9
Item Name
Bushing,handwheel
FSC / FSG
3120 / 31 — Bearings, Plain, Unmounted
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
General Characteristics Item Description
NICKEL-COPPER ALLOY,QQ-N-281,CLASS A; 2.1250 IN. LG; 1.6790 IN. MIN AND 1.6820 IN. MAX BODY OUTSIDE DIAMETER; 2.7500 IN. FLANGE OUTSIDE DIAMETER; 3 DIFFERENT THICKNESSES TO THE FLANGE; 1.0600 IN. MIN AND 1.0630 IN. MAX THICKNESS OF FLANGE; 2 NOTCHES IN FLANGE IN
Other items in FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288
3120-00-001-1288 · Item name not on file
3120-00-001-1835
3120-00-001-1835 · Item name not on file
3120-00-001-1838
3120-00-001-1838 · Item name not on file
3120-00-001-1928
3120-00-001-1928 · Item name not on file
3120-00-001-1934
3120-00-001-1934 · Item name not on file
3120-00-001-3933
3120-00-001-3933 · Item name not on file
3120-00-001-3937
3120-00-001-3937 · Item name not on file
3120-00-001-3938
3120-00-001-3938 · Item name not on file
Frequently Asked Questions
What is NSN 3120-01-122-4875?
NSN 3120-01-122-4875 is a Bushing,handwheel, manufactured by Naval Sea Systems Command, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
What part numbers are listed for NSN 3120-01-122-4875?
NSN 3120-01-122-4875 has 1 manufacturer part number on file: 810-2178494 PIECE 9 (Naval Sea Systems Command).
What are the specifications of 810-2178494 PIECE 9?
Key specifications for 810-2178494 PIECE 9: General Characteristics Item Description: NICKEL-COPPER ALLOY,QQ-N-281,CLASS A; 2.1250 IN. LG; 1.6790 IN. MIN AND 1.6820 IN. MAX BODY OUTSIDE DIAMETER; 2.7500 IN. FLANGE OUTSIDE DIAMETER; 3 DIFFERENT THICKNESSES TO THE FLANGE; 1.0600 IN. MIN AND 1.0630 IN. MAX THICKNESS OF FLANGE; 2 NOTCHES IN FLANGE IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 3120-01-122-4875 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.