The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-040-2712, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Astro Division. Government technical data includes 12 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 | 3120-01-040-2712 |
| Primary Part Number | ASSB15DU4 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | New Hampshire Ball Bearings Inc Div Astro Division |
| Status | ACTIVE |
| Inner Member Width | 0.9950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN |
| Hardness Rating | 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER |
| Outer Member Width | 0.9000 INCHES MINIMUM AND 0.9100 INCHES MAXIMUM IN |
| Style Designator | WITH INSERT AND/OR LINER |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE INNER MEMBER |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OUTER RACE MEMBER |
| Static Radial Load Rating | 122000 POUNDS LBS |
| Bore Diameter | 1.9095 INCHES MINIMUM AND 1.9105 INCHES MAXIMUM IN |
| Material | STEEL COMP 440C INNER MEMBER |
| Material | STEEL COMP 630 OUTER RACE MEMBER |
| Outer Member Outside Diameter | 2.7595 INCHES MINIMUM AND 2.7605 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 |
|---|---|
| ASSB15DU4 PRIMARY | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
NSN 3120-01-040-2712 is a Bearing,plain,self-Aligning, manufactured by New Hampshire Ball Bearings Inc Div Astro Division, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-040-2712 has 1 manufacturer part number on file: ASSB15DU4 (New Hampshire Ball Bearings Inc Div Astro Division).
Key specifications for ASSB15DU4: Inner Member Width: 0.9950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN; Hardness Rating: 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER; Outer Member Width: 0.9000 INCHES MINIMUM AND 0.9100 INCHES MAXIMUM IN. 12 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.