The Washer,flat, cataloged under National Stock Number 5310-01-089-9204, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Serra Manufacturing Corporation Dba Serra Manufacturing. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-089-9204 |
| Primary Part Number | SMC1200-480 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Serra Manufacturing Corporation Dba Serra Manufacturing |
| Status | ACTIVE |
| Surface Treatment Document and Classification | 595 FED STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.262 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-250/8,TEMPER H32 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/8,TEMPER H34 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 82577-993338 MANUFACTURERS STANDARD |
| Color | BLACK OVERALL |
| Surface Treatment | PAINT OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 5052 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.143 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN |
| Thickness | 0.016 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 |
|---|---|
| SMC1200-480 | Serra Manufacturing Corporation Dba Serra Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 993338-109 | 3/2 Design control — primary reference U.S. Government activity |
| A370-113-109 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-089-9204 is a Washer,flat, manufactured by Serra Manufacturing Corporation Dba Serra Manufacturing, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-089-9204 has 1 manufacturer part number on file: SMC1200-480 (Serra Manufacturing Corporation Dba Serra Manufacturing).
Key specifications for SMC1200-480: Surface Treatment Document and Classification: 595 FED STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.262 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-250/8,TEMPER H32 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/8,TEMPER H34 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 12 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.