The Radius Block,aircraft, cataloged under National Stock Number 1560-01-321-4197, is classified within Federal Supply Class 1560 (Airframe Structural Components) of the Aircraft and Airframe Components group. The manufacturer of record is Essner Manufacturing Lp. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1560-01-321-4197 |
| Primary Part Number | 1281618-102 |
| Item Name | Radius Block,aircraft |
| FSC / FSG | 1560 / 15 — Airframe Structural Components |
| Manufacturer | Essner Manufacturing Lp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1281618-102 | Essner Manufacturing Lp (USA) |
| 1281618-102 | Indian Aerospace, Inc. (USA) |
| 1281618-102 | Aero Components, Llc (USA) |
| 1281618-102 | Lockheed Martin Aeroparts, Inc. Dba Lockheed Martin Aeroparts Inc (USA) |
| Reference | Meaning |
|---|---|
| 1281618-102 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1560-01-321-4197 is a Radius Block,aircraft, manufactured by Essner Manufacturing Lp, classified under FSC 1560, Airframe Structural Components. Status: active.
NSN 1560-01-321-4197 has 4 manufacturer part numbers on file: 1281618-102 (Essner Manufacturing Lp), 1281618-102 (Indian Aerospace, Inc.), 1281618-102 (Aero Components, Llc), 1281618-102 (Lockheed Martin Aeroparts, Inc. Dba Lockheed Martin Aeroparts Inc).
Key specifications for 1281618-102: End Item Identification: S-3A AIRCRAFT A. 0 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 1560-01-321-4197 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.