The Washer,lock, cataloged under National Stock Number 5310-01-641-9518, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Company. Government technical data includes 8 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 | 5310-01-641-9518 |
| Primary Part Number | 93279A300 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcmaster-Carr Supply Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MAGNI B18 BLUE MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 18.0 MILLIMETERS NOMINAL MM |
| Material Thickness | 2.92 MILLIMETERS NOMINAL MM |
| Specification/standard Data | 05047-ASME B18.21.2M PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | PHOSPHATE OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 10.2 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 93279A300 PRIMARY | Mcmaster-Carr Supply Company (USA) |
NSN 5310-01-641-9518 is a Washer,lock, manufactured by Mcmaster-Carr Supply Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-641-9518 has 1 manufacturer part number on file: 93279A300 (Mcmaster-Carr Supply Company).
Key specifications for 93279A300: Surface Treatment Document and Classification: MAGNI B18 BLUE MFR REF SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 18.0 MILLIMETERS NOMINAL MM; Material Thickness: 2.92 MILLIMETERS NOMINAL MM. 8 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.