The Mast Section, cataloged under National Stock Number 5985-01-291-8924, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Chelton, Inc. Dba Cobham Antenna Systems Div Cobham Aerospace Connectivity. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Mast Section |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Chelton, Inc. Dba Cobham Antenna Systems Div Cobham Aerospace Connectivity (CAGE 63563); Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (CAGE 13499); Fn America Llc Div Columbia, Sc (CAGE 3S679) |
| Parameter | Value |
|---|---|
| NSN | 5985-01-291-8924 |
| Primary Part Number | 435 |
| Item Name | Mast Section |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Chelton, Inc. Dba Cobham Antenna Systems Div Cobham Aerospace Connectivity |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 435 PRIMARY | Chelton, Inc. Dba Cobham Antenna Systems Div Cobham Aerospace Connectivity (USA) |
| 218-0151-110 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| 75551 PRIMARY | Fn America Llc Div Columbia, Sc (USA) |
| Reference | Meaning |
|---|---|
| AB-1358/GRC | 5/2 Secondary reference U.S. Government activity |
NSN 5985-01-291-8924 is a Mast Section, manufactured by Chelton, Inc. Dba Cobham Antenna Systems Div Cobham Aerospace Connectivity, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-291-8924 has 3 manufacturer part numbers on file: 435 (Chelton, Inc. Dba Cobham Antenna Systems Div Cobham Aerospace Connectivity), 218-0151-110 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 75551 (Fn America Llc Div Columbia, Sc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-598-3083. Verify interchangeability with system specifications before substitution.
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 5985-01-291-8924 has DEMIL Code Q. 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.