The Washer,flat, cataloged under National Stock Number 5310-00-894-4985, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Jay-Em Aerospace Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-894-4985 |
| Primary Part Number | 211A186-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Jay-Em Aerospace Corporation |
| Status | ACTIVE |
| Overall Diameter | 3.172 INCHES NOMINAL IN |
| Heat Treatment | T-4 SOLUTION HEAT TREATED, NATURAL AGED |
| Material Document and Classification | QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 2.375 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 |
|---|---|
| 211A186-1 PRIMARY | Jay-Em Aerospace Corporation (USA) |
| Reference | Meaning |
|---|---|
| 211A186-1 | 5/9 Secondary reference Continental Tire the Americas, Llc Dba Continental Tires |
NSN 5310-00-894-4985 is a Washer,flat, manufactured by Jay-Em Aerospace Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-894-4985 has 1 manufacturer part number on file: 211A186-1 (Jay-Em Aerospace Corporation).
Key specifications for 211A186-1: Overall Diameter: 3.172 INCHES NOMINAL IN; Heat Treatment: T-4 SOLUTION HEAT TREATED, NATURAL AGED; Material Document and Classification: QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.