The Bearing,ball,rod End, cataloged under National Stock Number 3110-01-557-7583, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Timken Aurora Bearing Company. Government technical data includes 18 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-557-7583 |
| Primary Part Number | KM-8 |
| Item Name | Bearing,ball,rod End |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Timken Aurora Bearing Company |
| Status | ACTIVE |
| Shank Diameter | 0.6250 INCHES NOMINAL IN |
| Shank Thread Length | 1.5000 INCHES NOMINAL IN |
| Outer Ring Width | 0.6250 INCHES NOMINAL IN |
| Style Designator | NEEDLE ROLLER |
| Overall Outside Diameter | 1.3120 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Shank Style | EXTERNALLY THREADED |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CHROMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Bore Diameter | 0.5000 INCHES NOMINAL IN |
| Length From Bore Center to Shank End | 2.4380 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Self-Alignment Location | INTERNAL |
| Inner Ring Width | 0.6200 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| KM-8 PRIMARY | Timken Aurora Bearing Company (USA) |
NSN 3110-01-557-7583 is a Bearing,ball,rod End, manufactured by Timken Aurora Bearing Company, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-557-7583 has 1 manufacturer part number on file: KM-8 (Timken Aurora Bearing Company).
2 possible matches (shared part number, not a government interchangeability claim): 2990-01-602-5056, 5310-01-661-9530. Verify interchangeability with system specifications before substitution.
Key specifications for KM-8: Shank Diameter: 0.6250 INCHES NOMINAL IN; Shank Thread Length: 1.5000 INCHES NOMINAL IN; Outer Ring Width: 0.6250 INCHES NOMINAL IN; Style Designator: NEEDLE ROLLER. 18 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.
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.