The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-01-383-0485, 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 21 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 | 5307-01-383-0485 |
| Primary Part Number | 254-6556644FNCOTM-A20 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Nut End Shank Diameter | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Thread Length | 0.810 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 0.440 INCHES NOMINAL NUT THREAD IN |
| Style Designator | SHOULDERED AND STEPPED |
| Material Document and Classification | QQ-N-281 CLA FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.190 INCHES NUT THREAD IN |
| Shoulder Diameter | 0.500 INCHES NOMINAL IN |
| Stud End Shank Diameter | 0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Nut End Shank Length | 0.280 INCHES NOMINAL IN |
| Stud End Shank Length | 0.500 INCHES NOMINAL IN |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 32 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | NICKEL ALLOY 400 |
| Shoulder Length | 0.720 INCHES NOMINAL IN |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| 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 |
|---|---|
| 254-6556644FNCOTM-A20 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5307-01-383-0485 is a Stud,shouldered and Stepped, manufactured by Naval Sea Systems Command, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-383-0485 has 1 manufacturer part number on file: 254-6556644FNCOTM-A20 (Naval Sea Systems Command).
Key specifications for 254-6556644FNCOTM-A20: Nut End Shank Diameter: 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Thread Length: 0.810 INCHES NOMINAL STUD THREAD IN; Thread Length: 0.440 INCHES NOMINAL NUT THREAD IN; Style Designator: SHOULDERED AND STEPPED. 21 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.