The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-00-839-3201, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Aircraft Components and Fasteners Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-839-3201 |
| Primary Part Number | 578687 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Aircraft Components and Fasteners Inc |
| Status | ACTIVE |
| Thread Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | SHOULDERED AND STEPPED |
| Material Document and Classification | AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.250 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.3125 INCHES NUT THREAD IN |
| Surface Treatment | NICKEL OVERALL |
| Nut End Shank Length | 0.672 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 28 STUD THREAD |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Material | STEEL |
| Distance Across Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Shoulder Length | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) NUT 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 |
|---|---|
| 578687 | Precision Speed Manufacturing, Llc (USA) |
| 578687 PRIMARY | Aircraft Components and Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| 578687 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 578687 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5307-00-839-3201 is a Stud,shouldered and Stepped, manufactured by Aircraft Components and Fasteners Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-839-3201 has 2 manufacturer part numbers on file: 578687 (Precision Speed Manufacturing, Llc), 578687 (Aircraft Components and Fasteners Inc).
Key specifications for 578687: Thread Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM NUT THREAD IN; Style Designator: SHOULDERED AND STEPPED; Material Document and Classification: AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE. 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.