The Nut,plain,spline, cataloged under National Stock Number 5310-01-088-9568, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-088-9568 |
| Item Name | Nut,plain,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Counterbore Depth | 0.260 INCHES MINIMUM AND 0.280 INCHES MAXIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Nut Diameter | 0.500 INCHES NOMINAL IN |
| Counterbore Diameter | 0.030 INCHES NOMINAL NUT IN |
| Pilot Diameter | 0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Pilot Length | 0.295 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Nut Height | 0.332 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Countersink Angle | 90.0 DEGREES NOMINAL BOTH ENDS |
| Nut Style | SPLINE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1137 OVERALL |
| 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 |
|---|---|
| 80-006-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-088-9568 is a Nut,plain,spline, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-609-4746. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-088-9568: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Counterbore Depth: 0.260 INCHES MINIMUM AND 0.280 INCHES MAXIMUM NUT IN; Thread Direction: RIGHT-HAND. 16 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.