The Stud,shouldered, cataloged under National Stock Number 5307-01-550-9557, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-550-9557 |
| Primary Part Number | 5819670 |
| Item Name | Stud,shouldered |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35,TYPE II FED SPEC SINGLE TREATMENT RESPONSE BODY |
| Thread Length | 0.870 INCHES NOMINAL NUT THREAD A IN |
| Thread Length | 0.870 INCHES NOMINAL NUT THREAD B IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | AWS 5629 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND NUT THREAD A |
| Thread Direction | RIGHT-HAND NUT THREAD B |
| Nominal Thread Size | 0.312 INCHES NUT THREAD A IN |
| Nominal Thread Size | 0.312 INCHES NUT THREAD B IN |
| Shoulder Diameter | 0.375 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE BODY |
| Thread Class | 2A NUT THREAD A A |
| Thread Class | 2A NUT THREAD B A |
| Thread Quantity Per Inch | 24 NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD B |
| Material | STEEL CORROSION RESISTING |
| Shoulder Length | 3.570 INCHES NOMINAL IN |
| Thread Series Designator | UNF NUT THREAD B |
| Thread Series Designator | UNF NUT THREAD A |
| 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 |
|---|---|
| 5819670 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5307-01-550-9557 is a Stud,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-550-9557 has 1 manufacturer part number on file: 5819670 (Naval Sea Systems Command).
Key specifications for 5819670: Surface Treatment Document and Classification: QQ-P-35,TYPE II FED SPEC SINGLE TREATMENT RESPONSE BODY; Thread Length: 0.870 INCHES NOMINAL NUT THREAD A IN; Thread Length: 0.870 INCHES NOMINAL NUT THREAD B IN; Style Designator: SHOULDERED. 19 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.