The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-01-277-6039, is classified within Federal Supply Class 5915 (Filters and Networks) of the Electrical and Electronic Equipment Components group. The manufacturer of record is The Captor Corporation. Government technical data includes 27 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5915-01-277-6039 |
| Primary Part Number | A4991 |
| Item Name | Filter,radio Frequency Interfere |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | The Captor Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) FIRST FUNCTION |
| Mounting Facility Type and Quantity | 6 THREADED HOLE(S) SECOND FUNCTION |
| Inclosure Type | ENCASED |
| Power Line Frequency Rating Per Function in Hertz | 60.0 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Power Line Frequency Rating Per Function in Hertz | 60.0 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Power Line Frequency Rating Per Function in Hertz | 60.0 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Functional Terminal Type and Quantity | 3 THREADED STUD OUTPUT SECOND FUNCTION |
| Functional Terminal Type and Quantity | 3 THREADED STUD INPUT FIRST FUNCTION |
| Source Impedance Rating Per Function | 50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Source Impedance Rating Per Function | 50.0 OHMS 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Source Impedance Rating Per Function | 50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Body Width | 6.970 INCHES MINIMUM AND 7.030 INCHES MAXIMUM IN |
| Body Height | 3.720 INCHES MINIMUM AND 3.780 INCHES MAXIMUM IN |
| Unthreaded Mounting Hole Diameter | 0.200 INCHES MINIMUM AND 0.206 INCHES MAXIMUM IN |
| Style Designator | RECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Mounting Facility Screw Thread Series Designator | UNF |
| Nominal Thread Size | 0.190 INCHES IN |
| Body Length | 7.970 INCHES MINIMUM AND 8.030 INCHES MAXIMUM IN |
| Operating Voltage Rating and Type Per Function | 480.0 VOLTS AC 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Operating Voltage Rating and Type Per Function | 480.0 VOLTS AC 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Operating Voltage Rating and Type Per Function | 480.0 VOLTS AC 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Operating Current Rating Per Function in Amps | 15.0 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Operating Current Rating Per Function in Amps | 15.0 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Operating Current Rating Per Function in Amps | 15.0 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Load Impedance Per Function | 50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Load Impedance Per Function | 50.0 OHMS 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Load Impedance Per Function | 50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A4991 PRIMARY | The Captor Corporation (USA) |
NSN 5915-01-277-6039 is a Filter,radio Frequency Interfere, manufactured by The Captor Corporation, classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-277-6039 has 1 manufacturer part number on file: A4991 (The Captor Corporation).
Key specifications for A4991: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) FIRST FUNCTION; Mounting Facility Type and Quantity: 6 THREADED HOLE(S) SECOND FUNCTION; Inclosure Type: ENCASED; Power Line Frequency Rating Per Function in Hertz: 60.0 3RD RADIO INTERFERENCE THIRD FUNCTION. 27 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 5915-01-277-6039 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.