The Washer,flat, cataloged under National Stock Number 5310-00-446-6479, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Norcatec Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-446-6479 |
| Primary Part Number | SP805 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Norcatec Llc |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Overall Diameter | 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 416 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Thickness | 0.120 INCHES MINIMUM AND 0.130 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 |
|---|---|
| SP805 | Norcatec Llc (USA) |
| SP805 | Baykar Piaggio Aerospace S.p.a. (ITA) |
| Reference | Meaning |
|---|---|
| SP805 | 5/2 Secondary reference U.S. Government activity |
| 5310A01-003 | 5/2 Secondary reference U.S. Government activity |
| 5310A01-003-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-446-6479 is a Washer,flat, manufactured by Norcatec Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-446-6479 has 2 manufacturer part numbers on file: SP805 (Norcatec Llc), SP805 (Baykar Piaggio Aerospace S.p.a.).
Key specifications for SP805: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Overall Diameter: 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.