The Nut,plain,octagon, cataloged under National Stock Number 5310-01-175-3703, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-175-3703 |
| Item Name | Nut,plain,octagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 4.000 INCHES NOMINAL IN |
| Thread Series | UNS |
| Hole Configuration Style | CONFIGURATION A |
| Thread Pitch Diameters | +2.8789 TO 2.8871 INCHES IN |
| Material Document and Classification | MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.933 INCHES IN |
| Nut Height | 0.875 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.156 INCHES NOMINAL IN |
| Countersink Angle | 90.0 DEGREES NOMINAL BOTH ENDS |
| Nut Style | PLAIN, OCTAGON |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED |
| Hole Type and Quantity | 1 DRILLED |
| 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 |
|---|---|
| ADH5051A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 3300610 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-175-3703 is a Nut,plain,octagon, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-215-6913. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-175-3703: Width Across Flats: 4.000 INCHES NOMINAL IN; Thread Series: UNS; Hole Configuration Style: CONFIGURATION A; Thread Pitch Diameters: +2.8789 TO 2.8871 INCHES IN. 15 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.