The Tower Support Group, cataloged under National Stock Number 5445-01-079-7557, is classified within Federal Supply Class 5445 (Prefabricated Tower Structures) of the Prefabricated Structures and Scaffolding group. The manufacturer of record is Jaquith Industries Inc. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5445-01-079-7557 |
| Primary Part Number | L7557 |
| Item Name | Tower Support Group |
| FSC / FSG | 5445 / 54 — Prefabricated Tower Structures |
| Manufacturer | Jaquith Industries Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| L7557 | Jaquith Industries Inc (USA) |
| D6155-2TUBECAP | U S Dept of Transportation Federal Aviation Administration (USA) |
| D6155-1-5 | U S Dept of Transportation Federal Aviation Administration (USA) |
| Reference | Meaning |
|---|---|
| D6155-24-5 | 5/9 Secondary reference Jaquith Industries Inc |
| D6155-1PART5 | 3/2 Design control — primary reference U.S. Government activity |
| D6155TUBECAPASSY | 5/2 Secondary reference U.S. Government activity |
NSN 5445-01-079-7557 is a Tower Support Group, manufactured by Jaquith Industries Inc, classified under FSC 5445, Prefabricated Tower Structures. Status: active.
NSN 5445-01-079-7557 has 3 manufacturer part numbers on file: L7557 (Jaquith Industries Inc), D6155-2TUBECAP (U S Dept of Transportation Federal Aviation Administration), D6155-1-5 (U S Dept of Transportation Federal Aviation Administration).
1 possible match (shared part number, not a government interchangeability claim): 5445-01-080-2762. Verify interchangeability with system specifications before substitution.
Key specifications for L7557: Special Features: TUBE CAP ASSEMBLY USED ON LOW IMPACT RESISTANCE STRUCTURES FOR LIGHTING SUPPORTS FOR AIRPORT APPROACHLIGHTING SYSTEMS,MODELS ALSF-2 AND MALSR. OVER-ALL DIM,6.25 INCH DIA BY 4-11/16 INCH HIGH. PER FAA SPEC FAA-E-2702;ITEM 5, DRWG D-6155-1, ALSF-2 AND MALSR LIR STRUCTURES, STRUCTURAL CONFIGURATIONS IN; Part Name Assigned by Controlling Agency: TUBE CAP ASSEMBLY. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.