The Bearing,ball,annular, cataloged under National Stock Number 3110-01-112-3643, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Fisica Applied Technologies, Inc. Div Randtron Antenna Systems. Government technical data includes 15 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-112-3643 |
| Primary Part Number | 20515-1 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Fisica Applied Technologies, Inc. Div Randtron Antenna Systems |
| Status | ACTIVE |
| Lubrication Material | GREASE |
| Surface Finish | GROUND |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Material Document and Classification | QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE RETAINER |
| Overall Outside Diameter | 12.9986 INCHES MINIMUM AND 13.0000 INCHES MAXIMUM IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Alignment Type | RIGID |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 11.9986 INCHES MINIMUM AND 12.0000 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 BALL |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Lubrication Material Document and Classification | MIL-G-81322 MFR REF SINGLE MATERIAL RESPONSE |
| 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 |
|---|---|
| 20515-1 PRIMARY | Fisica Applied Technologies, Inc. Div Randtron Antenna Systems (USA) |
NSN 3110-01-112-3643 is a Bearing,ball,annular, manufactured by Fisica Applied Technologies, Inc. Div Randtron Antenna Systems, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-112-3643 has 1 manufacturer part number on file: 20515-1 (Fisica Applied Technologies, Inc. Div Randtron Antenna Systems).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-160-2113. Verify interchangeability with system specifications before substitution.
Key specifications for 20515-1: Lubrication Material: GREASE; Surface Finish: GROUND; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE; Material Document and Classification: QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE RETAINER. 15 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.