The Bearing,ball,annular, cataloged under National Stock Number 3110-01-272-9845, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is W S Darley & Co. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 — Bearings, Antifriction, Unmounted (FSG 31) |
| Manufacturers | W S Darley & Co Australia Global Fire Solutions Pty Ltd (CAGE ZAD93); Kovatch Corp. (CAGE 59556); W S Darley & Co (CAGE 15852) |
| Parameter | Value |
|---|---|
| NSN | 3110-01-272-9845 |
| Primary Part Number | 1721900 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | W S Darley & Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 1721900 | W S Darley & Co Australia Global Fire Solutions Pty Ltd (AUS) |
| 051-00001-13 | Kovatch Corp. (USA) |
| 1721900 PRIMARY | W S Darley & Co (USA) |
| Reference | Meaning |
|---|---|
| PA060 | 3/9 Design control — primary reference W S Darley & Co |
NSN 3110-01-272-9845 is a Bearing,ball,annular, manufactured by W S Darley & Co, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-272-9845 has 3 manufacturer part numbers on file: 1721900 (W S Darley & Co Australia Global Fire Solutions Pty Ltd), 051-00001-13 (Kovatch Corp.), 1721900 (W S Darley & Co).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-418-7038. Verify interchangeability with system specifications before substitution.
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.