NSN 3130-01-522-0638 · NIIN 015220638 · Part number 4X728
W.w. Grainger, Inc. Div Government Sales Division · FSC 3130 — Bearings, Mounted · FSG 31 — Bearings · CAGE 25795
Government record, cited
NSN 3130-01-522-0638 — this item is cataloged by the U.S. Government under National Stock Number 3130-01-522-0638. Manufacturer of record part number: 4X728.
Also searched as3130-01-522-0638 ·
3130015220638 ·
NIIN 015220638 ·
01-522-0638 ·
FSC 3130 Bearings, Mounted · CAGE 25795 · 4X728
Nearby stock numbers← 3130-01-521-6653
·
3130-01-522-2833 Housing, Bearing Unit →
3130-01-522-0638 — Bearings, Mounted
Features
Bearing Unit,ball — FSC 3130
Bore Diameter: 0.6250 INCHES NOMINAL IN
Material: STEEL HOUSING
1 manufacturer part number on file
Manufacturer of record: W.w. Grainger, Inc. Div Government Sales Division
Identification
NSN: 3130-01-522-0638
NIIN: 015220638
FSC: 3130 — Bearings, Mounted
FSG: 31 — Bearings
Primary part number: 4X728
Manufacturer: W.w. Grainger, Inc. Div Government Sales Division
General Description
The Bearing Unit,ball, cataloged under National Stock Number 3130-01-522-0638, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 2 specifications, 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.
W.w. Grainger, Inc. Div Government Sales Division (USA)
No interchangeability data on file.
Other items in FSC 3130 — Bearings, Mounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3130-00-001-5118
3130-00-001-5118 · Item name not on file
3130-00-001-5137
BEARING UNIT,BALL
3130-00-001-6585
3130-00-001-6585 · Item name not on file
3130-00-003-0422
3130-00-003-0422 · Item name not on file
3130-00-003-0455
3130-00-003-0455 · Item name not on file
3130-00-003-0794
BEARING UNIT,BALL
3130-00-003-2802
BEARING UNIT,BALL
3130-00-003-9535
3130-00-003-9535 · Item name not on file
Frequently Asked Questions
What is NSN 3130-01-522-0638?
NSN 3130-01-522-0638 is a Bearing Unit,ball, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 3130, Bearings, Mounted. Status: active.
What part numbers are listed for NSN 3130-01-522-0638?
NSN 3130-01-522-0638 has 1 manufacturer part number on file: 4X728 (W.w. Grainger, Inc. Div Government Sales Division).
What are the specifications of 4X728?
Key specifications for 4X728: Special Features: INAVY: MOUNTED BALL BEARING; End Item Identification: VAPOR CYCLE; HAWKEYE E-2C AIRCRAFT.; Bore Diameter: 0.6250 INCHES NOMINAL IN; Material: STEEL HOUSING. 2 specifications are documented in the U.S. Government catalog.
Is NSN 3130-01-522-0638 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.