Coupler, Transmission Line5985-01-221-3403

NSN 5985-01-221-3403 · NIIN 012213403 · Part number BST2

Hydro Engineering Innovation, Llc · FSC 5985 — Antennas, Waveguides, and Related Equipment · FSG 59 — Electrical and Electronic Equipment Components · CAGE 64030

Government record, cited

NSN 5985-01-221-3403 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-221-3403. Manufacturer of record part number: BST2.

Also searched as 5985-01-221-3403 · 5985012213403 · NIIN 012213403 · 01-221-3403 · FSC 5985 Antennas, Waveguides, and Related Equipment · CAGE 64030 · BST2 · QC304

Nearby stock numbers ← 5985-01-221-3252 · 5985-01-221-3434 Coupler, Antenna →

Features

Coupler,transmission Line — FSC 5985
1 manufacturer part number on file
Manufacturer of record: Hydro Engineering Innovation, Llc

Identification

NSN: 5985-01-221-3403
NIIN: 012213403
FSC: 5985 — Antennas, Waveguides, and Related Equipment
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: BST2
Manufacturer: Hydro Engineering Innovation, Llc

General Description

The Coupler,transmission Line, cataloged under National Stock Number 5985-01-221-3403, 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 Hydro Engineering Innovation, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Coupler,transmission Line
FSC / FSG	5985 — Antennas, Waveguides, and Related Equipment (FSG 59)
Manufacturers	Hydro Engineering Innovation, Llc (CAGE 64030)

Technical Specifications

Parameter	Value
NSN	5985-01-221-3403
Primary Part Number	BST2
Item Name	Coupler,transmission Line
FSC / FSG	5985 / 59 — Antennas, Waveguides, and Related Equipment
Manufacturer	Hydro Engineering Innovation, Llc
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)

Cross-Reference Index

Part Number	Manufacturer
BST2 PRIMARY	Hydro Engineering Innovation, Llc (USA)

Reference documents

Reference	Meaning
QC304	5/9 Secondary reference Hydro Engineering Innovation, Llc

Frequently Asked Questions

What is NSN 5985-01-221-3403?

NSN 5985-01-221-3403 is a Coupler,transmission Line, manufactured by Hydro Engineering Innovation, Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.

What part numbers are listed for NSN 5985-01-221-3403?

NSN 5985-01-221-3403 has 1 manufacturer part number on file: BST2 (Hydro Engineering Innovation, Llc).

Is NSN 5985-01-221-3403 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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