The Bearing,roller,needle, cataloged under National Stock Number 3110-01-256-9277, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-256-9277 |
| Item Name | Bearing,roller,needle |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Status | ACTIVE |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.4850 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-13924 MIL SPEC 2ND TREATMENT RESPONSE INNER RING |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-13924 MIL SPEC 2ND TREATMENT RESPONSE RETAINING PLATE |
| Surface Finish | GROUND |
| Crown Radius | 10.0000 INCHES NOMINAL IN |
| Style Designator | TRACK ROLLER |
| Material Document and Classification | L-P-392 FED SPEC 1ST MATERIAL RESPONSE OR L-P-410,TY 6/6 FED SPEC 2ND MATERIAL RESPONSE SEAL |
| Overall Outside Diameter | 1.3115 INCHES MINIMUM AND 1.3135 INCHES MAXIMUM IN |
| Features Provided | LUBRICATION HOLE AND LUBRICATION GROOVE |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CHROMIUM OUTER RING |
| Surface Treatment | CADMIUM OR OXIDE INNER RING |
| Surface Treatment | CADMIUM OR OXIDE RETAINING PLATE |
| Seal Quantity | 2 |
| Bore Diameter | 0.4993 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Material | PLASTIC ACETAL OR PLASTIC POLYHEXAMETHYLENE ADIPAMIDE SEAL |
| Material | STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP 4615 OR STEEL COMP 4617 OR STEEL COMP 4620 INNER RING |
| Material | STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP 4615 OR STEEL COMP 4617 OR STEEL COMP 4620 OUTER RING |
| Material | STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 OR STEEL COMP 4615 OR STEEL COMP 4617 OR STEEL COMP 4620 RETAINING PLATE |
| Self-Alignment Location | EXTERNAL |
| Lubrication Material Document and Classification | MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.6150 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS21438-108 | 2/2 Government specification standardization U.S. Government activity |
| MIL-B-3990 | 4/1 Identification reference U.S. Government activity |
NSN 3110-01-256-9277 is a Bearing,roller,needle, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
Key specifications for 3110-01-256-9277: Bearing Seal Type: CONTACT; Lubrication Material: GREASE; Outer Ring Width: 0.4850 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING. 25 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.