The Seat,bearing, cataloged under National Stock Number 3110-00-839-9149, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Jtekt Bearings North America Llc Div Kbna - Ord 1. Government technical data includes 4 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3110-00-839-9149 |
| Primary Part Number | 8355840 |
| Item Name | Seat,bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Jtekt Bearings North America Llc Div Kbna - Ord 1 |
| Status | CANCELLED |
| Style Designator | FLAT RACE SURFACE |
| Outside Diameter | 2.9700 INCHES MINIMUM AND 2.9900 INCHES MAXIMUM IN |
| Bore Diameter | 2.2520 INCHES MINIMUM AND 2.2620 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8355840 PRIMARY | Jtekt Bearings North America Llc Div Kbna - Ord 1 (USA) |
| 8355840 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 1441007 | 5/9 Secondary reference Sasgen Derrick Company |
| PWA37847-8 | C/1 Advisory reference — outside the item-of-supply concept Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 3110008399149 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| TRD3648 | 5/9 Secondary reference Timken Aerospace, Inc Dba Torrington Product |
| TRD3648 | 5/9 Secondary reference Regal-Beloit Corporation Dba Fasco Group Div Cassville Division |
| TDR3648 | 5/1 Secondary reference Jtekt Bearings North America Llc Div Kbna - Ord 1 |
| 2907773-2 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 700-148 | 5/9 Secondary reference W a Whitney Co Dba Whitney |
| 8355840 | 5/9 Secondary reference Timken Aerospace, Inc Dba Torrington Product |
NSN 3110-00-839-9149 is a Seat,bearing, manufactured by Jtekt Bearings North America Llc Div Kbna - Ord 1, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: cancelled.
NSN 3110-00-839-9149 has 2 manufacturer part numbers on file: 8355840 (Jtekt Bearings North America Llc Div Kbna - Ord 1), 8355840 (U S Army Tank Automotive Command Amsta-Im-Mm).
2 possible matches (shared part number, not a government interchangeability claim): 5980-01-324-2434, 5330-01-522-1748. Verify interchangeability with system specifications before substitution.
Key specifications for 8355840: Style Designator: FLAT RACE SURFACE; Overall Width: 0.1230 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM IN; Outside Diameter: 2.9700 INCHES MINIMUM AND 2.9900 INCHES MAXIMUM IN; Special Features: GROUND,NEEDLE ROLLER TYPE. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 3110-00-839-9149 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.