The Mast Section, cataloged under National Stock Number 5985-01-345-1208, 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 B & R Systemstec Inc Dba Rjr. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-345-1208 |
| Primary Part Number | A3158128 |
| Item Name | Mast Section |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | B & R Systemstec Inc Dba Rjr |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Section Quantity | 2 |
| Nested Height | 3.780 INCHES IN |
| Material | PLASTIC PHENOLIC |
| Construction | SECTIONALIZED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A3158128 | B & R Systemstec Inc Dba Rjr (USA) |
| D8100 | B & R Systemstec Inc Dba Rjr (USA) |
| Reference | Meaning |
|---|---|
| A3158128 | 5/9 Secondary reference Gks Inc |
| A3158128 | 3/2 Design control — primary reference U.S. Government activity |
| D8100 | 5/9 Secondary reference Gks Inc |
NSN 5985-01-345-1208 is a Mast Section, manufactured by B & R Systemstec Inc Dba Rjr, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-345-1208 has 2 manufacturer part numbers on file: A3158128 (B & R Systemstec Inc Dba Rjr), D8100 (B & R Systemstec Inc Dba Rjr).
Key specifications for A3158128: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Section Quantity: 2; End Item Identification: 5985-01-279-7942 ANTENNA GROUP; Nested Height: 3.780 INCHES IN. 5 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 5985-01-345-1208 has DEMIL Code B. 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.