The Nut,plain,spline, cataloged under National Stock Number 5310-01-067-7220, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-067-7220 |
| Primary Part Number | 5165360 |
| Item Name | Nut,plain,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.093 INCHES NOMINAL FLANGE IN |
| Nut Counterbore Depth | 0.407 INCHES NOMINAL BOSS IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Diameter | 0.625 INCHES NOMINAL IN |
| Counterbore Diameter | 0.347 INCHES NOMINAL BOSS IN |
| Counterbore Diameter | 0.375 INCHES NOMINAL FLANGE IN |
| Pilot Diameter | 0.414 INCHES NOMINAL IN |
| Pilot Length | 0.250 INCHES NOMINAL IN |
| Nut Height | 0.625 INCHES NOMINAL IN |
| Surface Treatment | OXIDE OVERALL |
| Nut Style | SPLINE |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 303 OVERALL |
| 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 |
|---|---|
| 5165360 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5999SS3118-6 | 5/9 Secondary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
| 5999SS3118-6 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5310-01-067-7220 is a Nut,plain,spline, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-067-7220 has 1 manufacturer part number on file: 5165360 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5962-01-480-7561. Verify interchangeability with system specifications before substitution.
Key specifications for 5165360: Surface Treatment Document and Classification: MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Nut Counterbore Depth: 0.093 INCHES NOMINAL FLANGE IN. 18 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.