The Washer,flat, cataloged under National Stock Number 5310-01-027-4588, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Dynamic Air Engineering, Inc.. Government technical data includes 9 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 | 5310-01-027-4588 |
| Primary Part Number | K133W4 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Dynamic Air Engineering, Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,CLC TY2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.219 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.125 INCHES NOMINAL IN |
| Thickness | 0.032 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 |
|---|---|
| K133W4 PRIMARY | Dynamic Air Engineering, Inc. (USA) |
NSN 5310-01-027-4588 is a Washer,flat, manufactured by Dynamic Air Engineering, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-027-4588 has 1 manufacturer part number on file: K133W4 (Dynamic Air Engineering, Inc.).
Key specifications for K133W4: Surface Treatment Document and Classification: QQ-P-416,CLC TY2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.219 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: CADMIUM AND CHROMATE OVERALL. 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.