The Washer,flat, cataloged under National Stock Number 5310-00-443-6005, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems. Government technical data includes 11 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 | 5310-00-443-6005 |
| Primary Part Number | 028347 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems |
| Status | ACTIVE |
| Surface Finish | 40.0 MICROINCHES TOP |
| Surface Finish | 40.0 MICROINCHES BOTTOM |
| Overall Diameter | 1.937 INCHES NOMINAL IN |
| Hardness Rating | 58.0 ROCKWELL C NOMINAL |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1018 OR STEEL COMP 1019 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.030 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN |
| Thickness | 0.250 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 |
|---|---|
| 028347 PRIMARY | Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems (USA) |
NSN 5310-00-443-6005 is a Washer,flat, manufactured by Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-443-6005 has 1 manufacturer part number on file: 028347 (Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems).
Key specifications for 028347: Surface Finish: 40.0 MICROINCHES TOP; Surface Finish: 40.0 MICROINCHES BOTTOM; Overall Diameter: 1.937 INCHES NOMINAL IN; Hardness Rating: 58.0 ROCKWELL C NOMINAL. 11 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.