The Washer,flat, cataloged under National Stock Number 5310-01-563-1909, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc. Dba Barnes Distribution. Government technical data includes 7 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 | 5310-01-563-1909 |
| Primary Part Number | 36751 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barnes Group Inc. Dba Barnes Distribution |
| Status | ACTIVE |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | DICHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1050 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.313 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 |
|---|---|
| 36751 PRIMARY | Barnes Group Inc. Dba Barnes Distribution (USA) |
NSN 5310-01-563-1909 is a Washer,flat, manufactured by Barnes Group Inc. Dba Barnes Distribution, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-563-1909 has 1 manufacturer part number on file: 36751 (Barnes Group Inc. Dba Barnes Distribution).
Key specifications for 36751: Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: DICHROMATE OVERALL; Peripheral Shape Style: ROUND. 7 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.