The Washer,slotted, cataloged under National Stock Number 5310-01-079-5178, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-079-5178 |
| Item Name | Washer,slotted |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Hardness Rating | 90.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM |
| Style Designator | SLOTTED |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.677 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN |
| Features Provided | CASEHARDENED |
| Material Thickness | 0.061 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL |
| Hole Diameter | 0.437 INCHES MINIMUM AND 0.439 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 | X |
| Reference | Meaning |
|---|---|
| 31569-32 | 3/9 Design control — primary reference Solventum Purification Inc. Div Filtration and Separation Division |
NSN 5310-01-079-5178 is a Washer,slotted, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-079-5178: Hardness Rating: 90.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM; Style Designator: SLOTTED; Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.677 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN. 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.