The Washer,key, cataloged under National Stock Number 5310-00-945-5750, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Baykar Piaggio Aerospace S.p.a.. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-945-5750 |
| Primary Part Number | 1-130-235-01 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Baykar Piaggio Aerospace S.p.a. |
| Status | ACTIVE |
| Internal Straight Key Width | 0.114 INCHES MINIMUM AND 0.116 INCHES MAXIMUM IN |
| Split Key Length | 0.157 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.714 INCHES NOMINAL IN |
| Hardness Rating | 76.0 ROCKWELL SUPERFICIAL 30-T MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | AMS5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.568 INCHES NOMINAL IN |
| Material Thickness | 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| External Key Quantity | 2 |
| External Prebent Key Angle | 20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM |
| Material | STEEL OVERALL |
| Angle Between External Keys | 60.0 DEGREES NOMINAL |
| Tapered Key Major Width | 0.145 INCHES NOMINAL IN |
| Hole Diameter | 0.328 INCHES MINIMUM AND 0.333 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 |
|---|---|
| 1-130-235-01 | Baykar Piaggio Aerospace S.p.a. (ITA) |
| Reference | Meaning |
|---|---|
| 1-130-235-01 | 3/9 Design control — primary reference U.S. Government activity |
| 1-130-235-01 | C/1 Advisory reference — outside the item-of-supply concept Ozark Aeroworks Llc |
NSN 5310-00-945-5750 is a Washer,key, manufactured by Baykar Piaggio Aerospace S.p.a., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-945-5750 has 1 manufacturer part number on file: 1-130-235-01 (Baykar Piaggio Aerospace S.p.a.).
Key specifications for 1-130-235-01: Internal Straight Key Width: 0.114 INCHES MINIMUM AND 0.116 INCHES MAXIMUM IN; Split Key Length: 0.157 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.714 INCHES NOMINAL IN; Hardness Rating: 76.0 ROCKWELL SUPERFICIAL 30-T MAXIMUM. 14 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.