The Washer,flat, cataloged under National Stock Number 5310-01-199-3788, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-199-3788 |
| Primary Part Number | BACW10AT36 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416A TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL A |
| Overall Diameter | 0.775 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS6359 ASSN STD 3RD MATERIAL RESPONSE OR AMS6358 ASSN STD 4TH MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 5TH MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.410 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Thickness | 0.063 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 |
|---|---|
| BACW10AT36 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| BACW10AT36 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-01-199-3788 is a Washer,flat, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-199-3788 has 1 manufacturer part number on file: BACW10AT36 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for BACW10AT36: Surface Treatment Document and Classification: QQ-P-416A TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL A; Overall Diameter: 0.775 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS6359 ASSN STD 3RD MATERIAL RESPONSE OR AMS6358 ASSN STD 4TH MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 5TH 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.