The Washer,flat, cataloged under National Stock Number 5310-00-358-5680, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Zenith Fuel Systems Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-358-5680 |
| Primary Part Number | T56-5 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Zenith Fuel Systems Llc |
| Status | ACTIVE |
| Overall Diameter | 0.370 INCHES NOMINAL IN |
| Material Document and Classification | MIL-G-12803,NO. 3200-A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Minimum Tensile Strength | 6000 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | CELLULOSE OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.240 INCHES NOMINAL IN |
| Thickness | 0.040 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 |
|---|---|
| T56-5 PRIMARY | Zenith Fuel Systems Llc (USA) |
| 6328512 PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 2F7297 | Caterpillar Inc Div Caterpillar Defense (USA) |
| E72083M PRIMARY | Chrysler Realty Company Llc Dba Daimler Chrysler (USA) |
| Reference | Meaning |
|---|---|
| 2A1088 | 5/2 Secondary reference U.S. Government activity |
| 6328512 | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 5310-00-358-5680 is a Washer,flat, manufactured by Zenith Fuel Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-358-5680 has 4 manufacturer part numbers on file: T56-5 (Zenith Fuel Systems Llc), 6328512 (Brinkley Technology Group Llc Dba Hercules Manufacturing), 2F7297 (Caterpillar Inc Div Caterpillar Defense), E72083M (Chrysler Realty Company Llc Dba Daimler Chrysler).
Key specifications for T56-5: Overall Diameter: 0.370 INCHES NOMINAL IN; Material Document and Classification: MIL-G-12803,NO. 3200-A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Minimum Tensile Strength: 6000 POUNDS PER SQUARE INCH LBS. 9 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.