The Plate,seal, cataloged under National Stock Number 1560-00-021-9974, is classified within Federal Supply Class 1560 (Airframe Structural Components) of the Aircraft and Airframe Components group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1560-00-021-9974 |
| Primary Part Number | 12-10582 |
| Item Name | Plate,seal |
| FSC / FSG | 1560 / 15 — Airframe Structural Components |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| General Characteristics Item Description | CIRCULAR,O/A DIA 3.505 IN. MAX,3.495 IN. MIN,STEEL,APPL TO C141 ACFT IN |
| 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 |
|---|---|
| 12-10582 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 12-10582 | 5/9 Secondary reference Donallco Inc |
NSN 1560-00-021-9974 is a Plate,seal, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 1560, Airframe Structural Components. Status: active.
NSN 1560-00-021-9974 has 1 manufacturer part number on file: 12-10582 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-022-6582, 5330-01-121-1493. Verify interchangeability with system specifications before substitution.
Key specifications for 12-10582: General Characteristics Item Description: CIRCULAR,O/A DIA 3.505 IN. MAX,3.495 IN. MIN,STEEL,APPL TO C141 ACFT IN. 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.