NSN 3120-01-178-7441 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-178-7441. Manufacturer of record part number: AA-842-4.
Body Outside Diameter: 0.8780 INCHES MINIMUM AND 0.8790 INCHES MAXIMUM IN
Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
Body Inside Diameter: 0.5020 INCHES MINIMUM AND 0.5030 INCHES MAXIMUM IN
Material: COPPER ALLOY OVERALL
Material: OIL LUBRICATING LUBRICATION
2 manufacturer part numbers on file
Identification
NSN: 3120-01-178-7441
NIIN: 011787441
FSC: 3120 — Bearings, Plain, Unmounted
FSG: 31 — Bearings
Primary part number: AA-842-4
Manufacturer: Beemer Precision Inc
General Description
The Bearing,sleeve, cataloged under National Stock Number 3120-01-178-7441, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Beemer Precision Inc. Government technical data includes 6 specifications, 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3120-01-178-7441
Primary Part Number
AA-842-4
Item Name
Bearing,sleeve
FSC / FSG
3120 / 31 — Bearings, Plain, Unmounted
Manufacturer
Beemer Precision Inc
Status
ACTIVE
Corner Shape
SQUARE ALL CORNERS
Body Outside Diameter
0.8780 INCHES MINIMUM AND 0.8790 INCHES MAXIMUM IN
Style Designator
SOLID, PLAIN, NO OUTSIDE FLANGES
Body Inside Diameter
0.5020 INCHES MINIMUM AND 0.5030 INCHES MAXIMUM 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 3120-01-178-7441?
NSN 3120-01-178-7441 is a Bearing,sleeve, manufactured by Beemer Precision Inc, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
What part numbers are listed for NSN 3120-01-178-7441?
NSN 3120-01-178-7441 has 2 manufacturer part numbers on file: AA-842-4 (Beemer Precision Inc), A7-069-000314 (Grove U.s. Llc Dba Grove Us Llc).
What are the specifications of AA-842-4?
Key specifications for AA-842-4: Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 0.8780 INCHES MINIMUM AND 0.8790 INCHES MAXIMUM IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Overall Length: 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 3120-01-178-7441 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.