The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-645-2899, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Pax Mfg Corp Hammarlund Mfg Co Div. Government technical data includes 13 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5950-00-645-2899 |
| Primary Part Number | 31258 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Pax Mfg Corp Hammarlund Mfg Co Div |
| Status | CANCELLED |
| Inclosure Type | OPEN |
| Body Outside Diameter | 0.545 INCHES NOMINAL IN |
| Turn Quantity | 3 1/4 SINGLE COMPONENT SINGLE PRIMARY |
| Turn Quantity | 7 5/6 SINGLE COMPONENT SINGLE SECONDARY |
| Mounting Method | TERMINAL SINGLE GROUP |
| Winding Conductor Size | 0.03196 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN |
| Winding Conductor Size | 0.00631 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN |
| Coil Form Type | SOLID SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Body Length | 1.438 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 14.8 MEGAHERTZ MINIMUM AND 29.7 MEGAHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 4 TAB, SOLDER LUG |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 31258 PRIMARY | Pax Mfg Corp Hammarlund Mfg Co Div (USA) |
NSN 5950-00-645-2899 is a Transformer,radio Frequency, manufactured by Pax Mfg Corp Hammarlund Mfg Co Div, classified under FSC 5950, Coils and Transformers. Status: cancelled.
NSN 5950-00-645-2899 has 1 manufacturer part number on file: 31258 (Pax Mfg Corp Hammarlund Mfg Co Div).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-444-8874, 4820-01-711-0086. Verify interchangeability with system specifications before substitution.
Key specifications for 31258: Inclosure Type: OPEN; Body Outside Diameter: 0.545 INCHES NOMINAL IN; Turn Quantity: 3 1/4 SINGLE COMPONENT SINGLE PRIMARY; Turn Quantity: 7 5/6 SINGLE COMPONENT SINGLE SECONDARY. 13 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.
NSN 5950-00-645-2899 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.