The Washer,flat, cataloged under National Stock Number 5310-01-102-9865, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-102-9865 |
| Primary Part Number | 6V-5839 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Overall Diameter | 20.5 MILLIMETERS NOMINAL MM |
| Heat Treatment | FULL HARD |
| Material Document and Classification | 1E2174,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 10.2 MILLIMETERS NOMINAL MM |
| Thickness | 2.5 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 3V-3308 | Navantia - Propulsion Y Energia Motores - Cartagena (ESP) |
| 6V-5839 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 3V-3308 | Navantia Sa Sme. Div Navantia Hq (ESP) |
| Reference | Meaning |
|---|---|
| 3V3308 | 3/9 Design control — primary reference Caterpillar Inc Div Caterpillar Defense |
NSN 5310-01-102-9865 is a Washer,flat, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-102-9865 has 3 manufacturer part numbers on file: 3V-3308 (Navantia - Propulsion Y Energia Motores - Cartagena), 6V-5839 (Caterpillar Inc Div Caterpillar Defense), 3V-3308 (Navantia Sa Sme. Div Navantia Hq).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-360-0983. Verify interchangeability with system specifications before substitution.
Key specifications for 6V-5839: Overall Diameter: 20.5 MILLIMETERS NOMINAL MM; Heat Treatment: FULL HARD; Material Document and Classification: 1E2174,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 9 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.