The Bearing,roller,rod End, cataloged under National Stock Number 3110-00-271-0074, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rexnord Industries, Llc Div Aerosspace Bearing Operation. Government technical data includes 28 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-271-0074 |
| Primary Part Number | SF4-4B |
| Item Name | Bearing,roller,rod End |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rexnord Industries, Llc Div Aerosspace Bearing Operation |
| Status | ACTIVE |
| Shank Diameter | 0.5000 INCHES NOMINAL IN |
| Shank Thread Length | 0.8120 INCHES NOMINAL IN |
| Bearing Seal Type | CONTACT |
| Width Across Flats | 0.5000 INCHES NOMINAL IN |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.3580 INCHES NOMINAL IN |
| Style Designator | SINGLE ROW, CONCAVE ROLLERS |
| Overall Outside Diameter | 1.0780 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Self-Alignment Angle | 10.00 DEGREES NOMINAL |
| Shank Style | INTERNALLY THREADED |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES |
| Seal Quantity | 2 |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Bore Diameter | 0.2500 INCHES NOMINAL IN |
| Length From Bore Center to Shank End | 1.6250 INCHES NOMINAL IN |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | RUBBER SYNTHETIC SEAL |
| Material | STEEL ROLLER |
| Material | STEEL SHAFT |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Self-Alignment Location | INTERNAL |
| Lubrication Material Document and Classification | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.5000 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 |
|---|---|
| SF4-4B PRIMARY | Rexnord Industries, Llc Div Aerosspace Bearing Operation (USA) |
| Reference | Meaning |
|---|---|
| FR4-4MILG3278A | 5/9 Secondary reference Rexnord Industries, Llc Div Aerosspace Bearing Operation |
| 202-19021-4-4R | 5/2 Secondary reference U.S. Government activity |
| FR4-4 | 5/9 Secondary reference Rexnord Industries, Llc Div Aerosspace Bearing Operation |
| FR4-4ANG25 | 5/9 Secondary reference Rexnord Industries, Llc Div Aerosspace Bearing Operation |
NSN 3110-00-271-0074 is a Bearing,roller,rod End, manufactured by Rexnord Industries, Llc Div Aerosspace Bearing Operation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-271-0074 has 1 manufacturer part number on file: SF4-4B (Rexnord Industries, Llc Div Aerosspace Bearing Operation).
3 possible matches (shared part number, not a government interchangeability claim): 3120-00-529-0808, 4810-01-251-7627, 6110-01-383-2161. Verify interchangeability with system specifications before substitution.
Key specifications for SF4-4B: Shank Diameter: 0.5000 INCHES NOMINAL IN; Shank Thread Length: 0.8120 INCHES NOMINAL IN; Bearing Seal Type: CONTACT; Width Across Flats: 0.5000 INCHES NOMINAL IN. 28 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.