The Washer,lock, cataloged under National Stock Number 5310-00-970-4392, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 7 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.
| Parameter | Value |
|---|---|
| NSN | 5310-00-970-4392 |
| Primary Part Number | 41S1423 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Style Designator | FLAT INTERNAL TEETH |
| Material Document and Classification | 66 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.491 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Material Thickness | 0.018 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN |
| Material | STEEL COMP 410 OVERALL |
| Hole Diameter | 0.383 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 41S1423 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 5310-00-970-4392 is a Washer,lock, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-970-4392 has 1 manufacturer part number on file: 41S1423 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 41S1423: Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; Style Designator: FLAT INTERNAL TEETH; Material Document and Classification: 66 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.491 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.