The Stop,mechanical, cataloged under National Stock Number 5340-01-504-4963, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 3 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 | 5340-01-504-4963 |
| Primary Part Number | 7520881 |
| Item Name | Stop,mechanical |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Thickness | 0.250 INCHES NOMINAL IN |
| Design Type | FLANGE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 7520881 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-504-4963 is a Stop,mechanical, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-504-4963 has 1 manufacturer part number on file: 7520881 (Naval Sea Systems Command).
Key specifications for 7520881: Overall Height: 0.810 INCHES NOMINAL IN; Flange Thickness: 0.250 INCHES NOMINAL IN; Design Type: FLANGE; Special Features: OVERALL DIAMETER IS 3.550 IN;CONTROLLING AGENCY ITEM NAME IS MK97 LARGE PINTLE TRAIN STOP BLOCK IN. 3 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.