The Stop,mechanical, cataloged under National Stock Number 5340-01-285-4120, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-285-4120 |
| Primary Part Number | 123LM10164-1 |
| Item Name | Stop,mechanical |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | GSS4402,GRUMMAN AIRCRAFT CORP,CAGE 26512 MFR REF SINGLE TREATMENT RESPONSE |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | STEEL COMP 4130 |
| 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 |
|---|---|
| 123LM10164-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123LM10164-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5340-01-285-4120 is a Stop,mechanical, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-285-4120 has 1 manufacturer part number on file: 123LM10164-1 (Northrop Grumman Systems Corporation).
Key specifications for 123LM10164-1: Surface Treatment Document and Classification: GSS4402,GRUMMAN AIRCRAFT CORP,CAGE 26512 MFR REF SINGLE TREATMENT RESPONSE; Material Document and Classification: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE; Special Features: LOCK LEG HAS A 0.875 IN. WIDE BY 0.812 IN. DEEP CUTOUT;SURFACE TREATMEN LACQUER; HOLE DIAMETER 0.260 INCHES MINIMUM AND 0.267 INCHES MAX; WIDTH 1.625 INCHES NOMINAL; LENGTH 1.875 INCHES NOMINAL; HEIGHT 0.453 INCHES NOMINAL; FURNISHED ITEMS - LOCKNUT; IN; Material: STEEL COMP 4130. 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.