The Washer,flat, cataloged under National Stock Number 5310-00-209-1853, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Avionics Specialties, 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 | 5310-00-209-1853 |
| Primary Part Number | SSA3-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Avionics Specialties, Inc. |
| Status | ACTIVE |
| Overall Diameter | 0.218 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 303 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.093 INCHES NOMINAL IN |
| Thickness | 0.020 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 |
|---|---|
| SSA3-1 PRIMARY | Avionics Specialties, Inc. (USA) |
NSN 5310-00-209-1853 is a Washer,flat, manufactured by Avionics Specialties, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-209-1853 has 1 manufacturer part number on file: SSA3-1 (Avionics Specialties, Inc.).
Key specifications for SSA3-1: Overall Diameter: 0.218 INCHES NOMINAL IN; Material Document and Classification: AMS 5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE 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.