The Nut Spacer,plate, cataloged under National Stock Number 5310-01-646-8816, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-646-8816 |
| Primary Part Number | 497A63101-1 |
| Item Name | Nut Spacer,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Plate Thickness | 0.375 INCHES NOMINAL IN |
| Distance From Mounting Hole Center to Base | 1.00 INCHES NOMINAL IN |
| Mounting Hole Arrangement Style | 1 HOLE |
| Material Document and Classification | ASTM B348,GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.375 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.295 INCHES NOMINAL IN |
| Material | TITANIUM ALLOY 5 OVERALL |
| Nut Mounting Provision | STRAIGHT HOLES |
| Hole Type and Quantity | 2 DRILLED |
| 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 |
|---|---|
| 497A63101-1 PRIMARY | Naval Sea Systems Command (USA) |
| 497A63101-1 | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
NSN 5310-01-646-8816 is a Nut Spacer,plate, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-646-8816 has 2 manufacturer part numbers on file: 497A63101-1 (Naval Sea Systems Command), 497A63101-1 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 497A63101-1: Plate Thickness: 0.375 INCHES NOMINAL IN; Distance From Mounting Hole Center to Base: 1.00 INCHES NOMINAL IN; Mounting Hole Arrangement Style: 1 HOLE; Material Document and Classification: ASTM B348,GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 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.