The Bearing,roller,airframe, cataloged under National Stock Number 3110-01-039-9779, 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 23 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-039-9779 |
| Primary Part Number | DAT28-40A |
| Item Name | Bearing,roller,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rexnord Industries, Llc Div Aerosspace Bearing Operation |
| Status | ACTIVE |
| Retainer Fabrication Method | CAST |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.7050 INCHES MINIMUM AND 0.7100 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE ALL EXTERNAL/EXPOSED METAL SURFACES |
| Style Designator | CONCAVE ROLLERS, DOUBLE CLOSURE, SELF ALIGNING |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE ROLLER |
| Material Document and Classification | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE RETAINER |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE INNER RING |
| Material Document and Classification | MIL-S-763 MIL SPEC SINGLE MATERIAL RESPONSE SHIELD |
| Overall Outside Diameter | 2.5299 INCHES MINIMUM AND 2.5310 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES |
| Seal Quantity | 2 |
| Bore Diameter | 1.7182 INCHES MINIMUM AND 1.7190 INCHES MAXIMUM IN |
| Material | STEEL COMP 430 SHIELD |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL COMP E52100 ROLLER |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAL |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Lubrication Material Document and Classification | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.8200 INCHES MINIMUM AND 0.8250 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 |
| Part Number | Manufacturer |
|---|---|
| DAT28-40A PRIMARY | Rexnord Industries, Llc Div Aerosspace Bearing Operation (USA) |
NSN 3110-01-039-9779 is a Bearing,roller,airframe, manufactured by Rexnord Industries, Llc Div Aerosspace Bearing Operation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-039-9779 has 1 manufacturer part number on file: DAT28-40A (Rexnord Industries, Llc Div Aerosspace Bearing Operation).
Key specifications for DAT28-40A: Retainer Fabrication Method: CAST; Bearing Seal Type: CONTACT; Lubrication Material: GREASE; Outer Ring Width: 0.7050 INCHES MINIMUM AND 0.7100 INCHES MAXIMUM IN. 23 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.