The Disk,solid,plain, cataloged under National Stock Number 5340-00-957-7266, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory. Government technical data includes 5 specifications, 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-957-7266 |
| Primary Part Number | 1U32318-01 |
| Item Name | Disk,solid,plain |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory |
| Status | ACTIVE |
| FSC Application Data | ROCKET MOTOR,M55A1 |
| Diameter | 1.860 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL |
| Thickness | 0.0375 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 1U32318-01 PRIMARY | Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory (USA) |
NSN 5340-00-957-7266 is a Disk,solid,plain, manufactured by Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-957-7266 has 1 manufacturer part number on file: 1U32318-01 (Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory).
Key specifications for 1U32318-01: FSC Application Data: ROCKET MOTOR,M55A1; Diameter: 1.860 INCHES NOMINAL IN; Surface Treatment: PASSIVATE; Material: STEEL. 5 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.
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.