The Washer,flat, cataloged under National Stock Number 5310-01-649-2889, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-649-2889 |
| Primary Part Number | 2.00ODX1.03IDX0.10 HYDEX4101LD4 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Peripheral Shape Style | ROUND |
| Hole Diameter | 1.030 INCHES NOMINAL IN |
| Thickness | 0.100 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 2.00ODX1.03IDX0.10 HYDEX4101LD4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 709-8500409 ITEM 33-10D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 709-8540949 ITEM 020-5D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 709-8500409 ITEM 33-10 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 709-8540949 ITEM 020-5 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 2.00ODX1.03IDX0.10 HYDEX4101L | 5/1 Secondary reference Naval Sea Systems Command |
NSN 5310-01-649-2889 is a Washer,flat, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-649-2889 has 3 manufacturer part numbers on file: 2.00ODX1.03IDX0.10 HYDEX4101LD4 (Naval Inventory Control Point Mechanicsburg), 709-8500409 ITEM 33-10D4 (Naval Inventory Control Point Mechanicsburg), 709-8540949 ITEM 020-5D4 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 2.00ODX1.03IDX0.10 HYDEX4101LD4: Overall Diameter: 2.000 INCHES NOMINAL IN; Criticality Code Justification: FEAT; Special Features: QUALITY ASSURANCE TESTED AND CERTIFIED FOR DEEP SUBMERGENCE SYSTEMS; Peripheral Shape Style: ROUND. 5 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.