The Washer,lock, cataloged under National Stock Number 5310-00-194-7345, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-194-7345 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-Z-325,TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 90.0 ROCKWELL B MINIMUM |
| Criticality Code Justification | SFTT |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | QQ-B-750,COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.443 INCHES NOMINAL IN |
| Material Thickness | 0.0625 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | E CLASS |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 369814PC10 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| FFW84CLASSE | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-194-7345 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-194-7346, 5310-00-209-1881. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-194-7345: Surface Treatment Document and Classification: QQ-Z-325,TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 90.0 ROCKWELL B MINIMUM; Criticality Code Justification: SFTT; Style Designator: SPLIT HELICAL-RIGHT HAND. 11 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.