The Washer,flat, cataloged under National Stock Number 5310-01-348-0818, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-348-0818 |
| Primary Part Number | 4M284-8 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| 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 |
|---|---|
| 4M284-8 | Moeller Manufacturing & Supply, Llc (USA) |
| T4M284-8 | Anillo Industries Llc (USA) |
| T4M284-8 | Standard Wire & Cable Co. Dba Standard Wire & Cable Co (USA) |
| T4M284-8 | Trico Manufacturing Inc. (USA) |
| 4M284-8 PRIMARY | The Boeing Company Div Defense (USA) |
| 4M284-8 | Rmb Miniature Bearings Inc (USA) |
| Reference | Meaning |
|---|---|
| 10122220 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-01-348-0818 is a Washer,flat, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-348-0818 has 6 manufacturer part numbers on file: 4M284-8 (Moeller Manufacturing & Supply, Llc), T4M284-8 (Anillo Industries Llc), T4M284-8 (Standard Wire & Cable Co. Dba Standard Wire & Cable Co), T4M284-8 (Trico Manufacturing Inc.), 4M284-8 (The Boeing Company Div Defense) and 1 more.
Key specifications for 4M284-8: Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL CORROSION RESISTING OVERALL; Center Hole Shape Style: ROUND. 4 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.