The Washer,flat, cataloged under National Stock Number 5310-00-595-6959, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Siemens Energy, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-595-6959 |
| Primary Part Number | S810JC |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Overall Diameter | 3.000 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 2 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 2.170 INCHES MINIMUM AND 2.180 INCHES MAXIMUM IN |
| Thickness | 0.375 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 |
|---|---|
| S810JC PRIMARY | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| S810JC | 5/9 Secondary reference Circor Pumps North America Llc |
NSN 5310-00-595-6959 is a Washer,flat, manufactured by Siemens Energy, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-595-6959 has 1 manufacturer part number on file: S810JC (Siemens Energy, Inc.).
Key specifications for S810JC: Overall Diameter: 3.000 INCHES NOMINAL IN; Material Document and Classification: MIL-S-890 MIL 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.