The Washer,recessed, cataloged under National Stock Number 5310-01-248-7072, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Warfare Center Weapons Div. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-248-7072 |
| Primary Part Number | NWC78A339 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Air Warfare Center Weapons Div |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES COUNTERBORE WALL |
| Surface Treatment Document and Classification | QQ-P-35,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5643,COND H1100 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.000 INCHES NOMINAL IN |
| Material Thickness | 0.125 INCHES NOMINAL IN |
| Recess Diameter | 0.562 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 630 OVERALL |
| Hole Diameter | 0.500 INCHES NOMINAL IN |
| Recess Angle | 52.0 DEGREES NOMINAL |
| 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 |
|---|---|
| NWC78A339 PRIMARY | Naval Air Warfare Center Weapons Div (USA) |
NSN 5310-01-248-7072 is a Washer,recessed, manufactured by Naval Air Warfare Center Weapons Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-248-7072 has 1 manufacturer part number on file: NWC78A339 (Naval Air Warfare Center Weapons Div).
Key specifications for NWC78A339: Surface Finish: 32.0 MICROINCHES COUNTERBORE WALL; Surface Treatment Document and Classification: QQ-P-35,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: AMS 5643,COND H1100 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.000 INCHES NOMINAL IN. 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.