The Washer,flat, cataloged under National Stock Number 5310-00-557-9331, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Meggitt Safety Systems, Inc. Dba Meggitt Control Systems-Ventura County. Government technical data includes 8 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 | 5310-00-557-9331 |
| Primary Part Number | 0103485-20 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Meggitt Safety Systems, Inc. Dba Meggitt Control Systems-Ventura County |
| Status | ACTIVE |
| Overall Diameter | 1.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.832 INCHES MINIMUM AND 0.838 INCHES MAXIMUM 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 |
|---|---|
| 0103485-20 PRIMARY | Meggitt Safety Systems, Inc. Dba Meggitt Control Systems-Ventura County (USA) |
NSN 5310-00-557-9331 is a Washer,flat, manufactured by Meggitt Safety Systems, Inc. Dba Meggitt Control Systems-Ventura County, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-557-9331 has 1 manufacturer part number on file: 0103485-20 (Meggitt Safety Systems, Inc. Dba Meggitt Control Systems-Ventura County).
Key specifications for 0103485-20: Overall Diameter: 1.250 INCHES NOMINAL IN; Material Document and Classification: QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.