NSN 3120-01-044-3122 · NIIN 010443122 · Part number 7539859
U S Army Tank Automotive Command Amsta-Im-Mm · FSC 3120 — Bearings, Plain, Unmounted · FSG 31 — Bearings · CAGE 19207
Government record, cited
NSN 3120-01-044-3122 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-044-3122. Manufacturer of record part number: 7539859.
Overall Thickness: 0.0610 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM IN
Hardness Rating: 60.0 ROCKWELL B MINIMUM OVERALL
Style Designator: ROUND
Diameter: 1.0005 INCHES MINIMUM AND 1.0105 INCHES MAXIMUM IN
Identification
NSN: 3120-01-044-3122
NIIN: 010443122
FSC: 3120 — Bearings, Plain, Unmounted
FSG: 31 — Bearings
Primary part number: 7539859
Manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
General Description
The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-044-3122, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 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
3120-01-044-3122
Primary Part Number
7539859
Item Name
Bearing,washer,thrust
FSC / FSG
3120 / 31 — Bearings, Plain, Unmounted
Manufacturer
U S Army Tank Automotive Command Amsta-Im-Mm
Status
ACTIVE
Surface Finish
50.0 MICROINCHES RIGHT SIDE
Surface Finish
50.0 MICROINCHES LEFT SIDE
Corner Shape
SQUARE ALL CORNERS
Overall Thickness
0.0610 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM IN
Hardness Rating
60.0 ROCKWELL B MINIMUM OVERALL
Style Designator
ROUND
Diameter
1.0005 INCHES MINIMUM AND 1.0105 INCHES MAXIMUM IN
Cross-Sectional Shape Style
RECTANGULAR
Outside Diameter
1.7400 INCHES MINIMUM AND 1.7600 INCHES MAXIMUM IN
Lubrication Feature
GROOVE FLAT BEARING SURFACE
Lubrication Feature
GROOVE INSIDE DIAMETER SURFACE OF BODY
Material
COPPER ALLOY 546-CANCELED OR COPPER ALLOY 510 OVERALL
U S Army Tank Automotive Command Amsta-Im-Mm (USA)
No interchangeability data on file.
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 3120-01-044-3122?
NSN 3120-01-044-3122 is a Bearing,washer,thrust, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
What part numbers are listed for NSN 3120-01-044-3122?
NSN 3120-01-044-3122 has 2 manufacturer part numbers on file: 6764637 (Allison Transmission Inc Dba Allison Transmission, Inc), 7539859 (U S Army Tank Automotive Command Amsta-Im-Mm).
What are the specifications of 7539859?
Key specifications for 7539859: Surface Finish: 50.0 MICROINCHES RIGHT SIDE; Surface Finish: 50.0 MICROINCHES LEFT SIDE; Corner Shape: SQUARE ALL CORNERS; Overall Thickness: 0.0610 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM IN. 13 specifications are documented in the U.S. Government catalog.
Is NSN 3120-01-044-3122 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.