The Capacitor,variable,air Dielectri, cataloged under National Stock Number 5910-00-045-9249, is classified within Federal Supply Class 5910 (Capacitors) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Caywood Electronics Inc Dba James Millen Electronics. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5910-00-045-9249 |
| Primary Part Number | 28900-4 |
| Item Name | Capacitor,variable,air Dielectri |
| FSC / FSG | 5910 / 59 — Capacitors |
| Manufacturer | Caywood Electronics Inc Dba James Millen Electronics |
| Status | ACTIVE |
| Shaft Type | ROUND SINGLE SHAFT |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Shaft Diameter | 0.2495 INCHES NOMINAL SINGLE SHAFT IN |
| Inclosure Type | UNINCLOSED |
| Body Style | PLATE-MESHING |
| Adjustment Device Rotation | 180.0 DEGREES NOMINAL CLOCKWISE |
| Nonderated Operating Temp | -54.0 CELSIUS MINIMUM AND 90.0 CELSIUS MAXIMUM DEGC |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Individual Section Quantity | 2 |
| Tuning Characteristic | STRAIGHT LINE CAPACITY ALL SECTIONS |
| Nominal Thread Size | 0.112 INCHES IN |
| Shaft Length | 1.062 INCHES NOMINAL SINGLE SHAFT IN |
| Body Length | 3.141 INCHES NOMINAL IN |
| Adjustment Device Torque | 5.000 INCH-OUNCES NOMINAL IN |
| Adjustment Device Drive Type and Quantity | 1 KNOB |
| Split-Stator Rotary Plate Type | DIFFERENTIAL |
| Terminal Type and Quantity | 6 TAB, SOLDER LUG |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 28900-4 PRIMARY | Caywood Electronics Inc Dba James Millen Electronics (USA) |
| Reference | Meaning |
|---|---|
| A39955-2 | 5/9 Secondary reference Dar Electronics Inc Dba National Radio Co |
NSN 5910-00-045-9249 is a Capacitor,variable,air Dielectri, manufactured by Caywood Electronics Inc Dba James Millen Electronics, classified under FSC 5910, Capacitors. Status: active.
NSN 5910-00-045-9249 has 1 manufacturer part number on file: 28900-4 (Caywood Electronics Inc Dba James Millen Electronics).
4 possible matches (shared part number, not a government interchangeability claim): 5950-00-051-1129, 6140-01-552-3577, 4920-01-572-8167. Verify interchangeability with system specifications before substitution.
Key specifications for 28900-4: Shaft Type: ROUND SINGLE SHAFT; Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Overall Height: 1.562 INCHES NOMINAL IN; Shaft Diameter: 0.2495 INCHES NOMINAL SINGLE SHAFT IN. 17 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.