The Washer,flat, cataloged under National Stock Number 5310-01-508-3905, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-508-3905 |
| Primary Part Number | 5866B50H04 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Material Document and Classification | MIL-T-9046, COMP CP-3 OR AB-2 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-T-9047, COMP 6A1-4V, CONDITION A MIL SPEC 2ND MATERIAL RESPONSE OVERALL V |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | TITANIUM ALLOY UNS R56401 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.2812 INCHES NOMINAL IN |
| Thickness | 0.036 INCHES NOMINAL 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 |
|---|---|
| 5866B50H04 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| PL 5793665 | 5/9 Secondary reference Naval Sea Systems Command |
| 5793665 FIND N0 6 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5310-01-508-3905 is a Washer,flat, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-508-3905 has 1 manufacturer part number on file: 5866B50H04 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Key specifications for 5866B50H04: Overall Diameter: 0.750 INCHES NOMINAL IN; Material Document and Classification: MIL-T-9046, COMP CP-3 OR AB-2 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-T-9047, COMP 6A1-4V, CONDITION A MIL SPEC 2ND MATERIAL RESPONSE OVERALL V; Cross-Sectional Shape Style: RECTANGULAR; Special Features: WASHER USED ON PREAMP BOTTLE ASSEMBLY - TITANIUM. 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.