The Clamp,loop, cataloged under National Stock Number 5340-01-578-4656, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Cpi Satcom & Antenna Technologies Inc. Government technical data includes 1 specification, 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. 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 | 5340-01-578-4656 |
| Primary Part Number | R21-011-103 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Cpi Satcom & Antenna Technologies Inc |
| Status | ACTIVE |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| R21-011-103 PRIMARY | Cpi Satcom & Antenna Technologies Inc (USA) |
NSN 5340-01-578-4656 is a Clamp,loop, manufactured by Cpi Satcom & Antenna Technologies Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-578-4656 has 1 manufacturer part number on file: R21-011-103 (Cpi Satcom & Antenna Technologies Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-590-0342. Verify interchangeability with system specifications before substitution.
Key specifications for R21-011-103: End Item Identification: SYRACUSE 3 TELECOMMUNICATIONS SATELLITE; Material: PLASTIC POLYAMIDE NYLON OVERALL. 1 specification is 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.
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.