The Washer,key, cataloged under National Stock Number 5310-01-171-0579, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-171-0579 |
| Primary Part Number | L5871219-003 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Material Document and Classification | MIL-S-18729,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.875 INCHES NOMINAL IN |
| Material Thickness | 0.125 INCHES NOMINAL IN |
| Tapered Key Minor Width | 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL COMP 4130 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.510 INCHES MINIMUM AND 0.515 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 |
|---|---|
| L5871219-003 | Anillo Industries Llc (USA) |
| L5871219-003 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| L5871219-003 | Maney Aircraft, Inc. Dba Maney Aircraft (USA) |
| L5871219-003 | Atomic Machine & Edm Inc (USA) |
NSN 5310-01-171-0579 is a Washer,key, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-171-0579 has 4 manufacturer part numbers on file: L5871219-003 (Anillo Industries Llc), L5871219-003 (The Boeing Company Div Legacy Am&m), L5871219-003 (Maney Aircraft, Inc. Dba Maney Aircraft), L5871219-003 (Atomic Machine & Edm Inc).
Key specifications for L5871219-003: Material Document and Classification: MIL-S-18729,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.875 INCHES NOMINAL IN; Material Thickness: 0.125 INCHES NOMINAL IN; Tapered Key Minor Width: 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN. 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.