The Washer,flat, cataloged under National Stock Number 5310-01-618-0825, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is J-Line Pump Co. Dba American-Marsh Pumps. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-618-0825 |
| Primary Part Number | 490-7999-000 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | J-Line Pump Co. Dba American-Marsh Pumps |
| Status | ACTIVE |
| Overall Diameter | 1.094 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | BLANK RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.594 INCHES NOMINAL IN |
| Thickness | 0.094 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 |
|---|---|
| 91950A049 | Mcmaster-Carr Supply Co (USA) |
| 490-7999-000 PRIMARY | J-Line Pump Co. Dba American-Marsh Pumps (USA) |
NSN 5310-01-618-0825 is a Washer,flat, manufactured by J-Line Pump Co. Dba American-Marsh Pumps, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-618-0825 has 2 manufacturer part numbers on file: 91950A049 (Mcmaster-Carr Supply Co), 490-7999-000 (J-Line Pump Co. Dba American-Marsh Pumps).
Key specifications for 490-7999-000: Overall Diameter: 1.094 INCHES NOMINAL IN; Cross-Sectional Shape Style: BLANK RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: 2.0 INCH SPHE IMPELLER WASHER IN. 7 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.