The Bearing,ball,annular, cataloged under National Stock Number 3110-00-554-3929, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-554-3929 |
| Primary Part Number | 315129 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Surface Finish | GROUND |
| Style Designator | COUNTERBORED OUTER RING, NON-SEPARABLE |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE BALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE INNER RING |
| Overall Outside Diameter | 100.00 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Contact Angle | 25.0 DEGREES MAXIMUM |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 45.00 MILLIMETERS NOMINAL MM |
| Material | STEEL COMP E52100 BALL |
| Material | STEEL RETAINER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| 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 |
|---|---|
| 315129 PRIMARY | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 700287 | 5/9 Secondary reference Army Weapons Command Attn Amswe-Ree-S |
| FF-B-171 | 4/1 Identification reference U.S. Government activity |
| 7309C1TX9 | 5/9 Secondary reference Nsk Corp Bearing Div |
| TCC4410 C PIECE 15 | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy, Inc. |
| H20309 X 1A | C/1 Advisory reference — outside the item-of-supply concept General Motors Corp Delco Moraine Ndh Div |
| 20309-1 | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
NSN 3110-00-554-3929 is a Bearing,ball,annular, manufactured by Siemens Energy, Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-554-3929 has 1 manufacturer part number on file: 315129 (Siemens Energy, Inc.).
4 possible matches (shared part number, not a government interchangeability claim): 2590-00-777-3128, 5841-01-059-2776, 4210-01-571-3988. Verify interchangeability with system specifications before substitution.
Key specifications for 315129: Retainer Fabrication Method: PRESSED; Surface Finish: GROUND; Style Designator: COUNTERBORED OUTER RING, NON-SEPARABLE; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE BALL. 16 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.