The Washer,flat, cataloged under National Stock Number 5310-00-607-7556, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is L3 Technologies, Inc. Div Communication Systems-East. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-607-7556 |
| Primary Part Number | 59118-728 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | L3 Technologies, Inc. Div Communication Systems-East |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.262 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.143 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN |
| Thickness | 0.030 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 |
|---|---|
| 59118-728 | L3 Technologies, Inc. Div Communication Systems-East (USA) |
| Reference | Meaning |
|---|---|
| SMB208790-5 | 3/2 Design control — primary reference U.S. Government activity |
| 59118-728 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories |
| 59118-728 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
NSN 5310-00-607-7556 is a Washer,flat, manufactured by L3 Technologies, Inc. Div Communication Systems-East, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-607-7556 has 1 manufacturer part number on file: 59118-728 (L3 Technologies, Inc. Div Communication Systems-East).
Key specifications for 59118-728: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.262 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-636-CANCELED FED SPEC 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.