The Washer,key, cataloged under National Stock Number 5310-00-900-4593, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Marison Industries Inc Barco Div. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-900-4593 |
| Primary Part Number | AE91978E |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Marison Industries Inc Barco Div |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ACES16+3 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| External Prebent Key Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS5513 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.690 INCHES NOMINAL IN |
| Features Provided | MAGNETIZED |
| Material Thickness | 0.020 INCHES NOMINAL IN |
| External Prebent Key Angle | 90.0 DEGREES NOMINAL |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.155 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.313 INCHES MINIMUM AND 0.315 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 |
|---|---|
| AE91978E PRIMARY | Marison Industries Inc Barco Div (USA) |
| Reference | Meaning |
|---|---|
| AE91978E | C/1 Advisory reference — outside the item-of-supply concept Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
NSN 5310-00-900-4593 is a Washer,key, manufactured by Marison Industries Inc Barco Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-900-4593 has 1 manufacturer part number on file: AE91978E (Marison Industries Inc Barco Div).
Key specifications for AE91978E: Surface Treatment Document and Classification: ACES16+3 MFR REF SINGLE TREATMENT RESPONSE OVERALL; External Prebent Key Length: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: AMS5513 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL. 12 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.