The Washer,key, cataloged under National Stock Number 5310-00-079-3447, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Anillo Industries Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5310-00-079-3447 |
| Primary Part Number | 4J33190-101A |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Anillo Industries Llc |
| Status | ACTIVE |
| External Straight Key Length | 0.550 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.720 INCHES NOMINAL IN |
| Heat Treatment | AS FABRICATED |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-18729 COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.970 INCHES NOMINAL IN |
| Material Thickness | 0.050 INCHES NOMINAL IN |
| External Straight Key Width | 0.226 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.640 INCHES NOMINAL 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 |
|---|---|
| 4J33190-101A | Anillo Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 4J33190-101A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-079-3447 is a Washer,key, manufactured by Anillo Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-079-3447 has 1 manufacturer part number on file: 4J33190-101A (Anillo Industries Llc).
Key specifications for 4J33190-101A: External Straight Key Length: 0.550 INCHES NOMINAL IN; Overall Distance Including Keys: 1.720 INCHES NOMINAL IN; Heat Treatment: AS FABRICATED; Style Designator: KEY. 10 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.