Outside Diameter: 2.0290 INCHES MINIMUM AND 2.0300 INCHES MAXIMUM IN
Bore Diameter: 1.2550 INCHES MINIMUM AND 1.2650 INCHES MAXIMUM IN
Material: STEEL COMP E52100 OVERALL
Identification
NSN: 3110-00-491-4261
NIIN: 004914261
FSC: 3110 — Bearings, Antifriction, Unmounted
FSG: 31 — Bearings
General Description
The Seat,bearing, cataloged under National Stock Number 3110-00-491-4261, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3110-00-491-4261
Item Name
Seat,bearing
FSC / FSG
3110 / 31 — Bearings, Antifriction, Unmounted
Status
ACTIVE
Style Designator
FLAT RACE SURFACE
Outside Diameter
2.0290 INCHES MINIMUM AND 2.0300 INCHES MAXIMUM IN
Bore Diameter
1.2550 INCHES MINIMUM AND 1.2650 INCHES MAXIMUM IN
Material
STEEL COMP E52100 OVERALL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
C5A27506
3/9Design control — primary reference
Speco Corp
No interchangeability data on file.
Other items in FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937
BEARING,ROLLER,NEEDLE
3110-00-001-1937
BEARING,ROLLER,NEEDLE
3110-00-001-1937
BEARING,ROLLER,NEEDLE
3110-00-001-1938
BEARING,BALL,AIRFRAME
3110-00-001-4661
CONE AND ROLLERS,TAPERED ROLLER
3110-00-001-4662
CUP,TAPERED ROLLER BEARING
3110-00-001-4689
BEARING,BALL,ANNULAR
3110-00-001-4722
BEARING,BALL,ANNULAR
Frequently Asked Questions
What is NSN 3110-00-491-4261?
NSN 3110-00-491-4261 is a Seat,bearing, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
What are the specifications of 3110-00-491-4261?
Key specifications for 3110-00-491-4261: Style Designator: FLAT RACE SURFACE; Overall Width: 0.1380 INCHES MINIMUM AND 0.1420 INCHES MAXIMUM IN; Outside Diameter: 2.0290 INCHES MINIMUM AND 2.0300 INCHES MAXIMUM IN; Bore Diameter: 1.2550 INCHES MINIMUM AND 1.2650 INCHES MAXIMUM IN. 4 specifications are documented in the U.S. Government catalog.
Is NSN 3110-00-491-4261 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.