The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-00-627-7611, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 26 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-627-7611 |
| Primary Part Number | 6784686 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES OVERALL |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Cotter Pin Hole Diameter | 0.070 INCHES MINIMUM FIRST HOLE IN |
| Cotter Pin Hole Diameter | 0.080 INCHES MAXIMUM SECOND HOLE IN |
| Nut End Shank Diameter | 0.371 INCHES NOMINAL IN |
| Thread Length | 0.600 INCHES MINIMUM AND 0.630 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.611 INCHES MINIMUM AND 0.687 INCHES MAXIMUM NUT THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | SHOULDERED AND STEPPED |
| Material Document and Classification | EMS85010,GENERAL MOTORS CORP MFR REF SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.375 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.250 INCHES STUD THREAD IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut End Shank Length | 1.047 INCHES MINIMUM AND 1.077 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 | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Shoulder Length | 0.450 INCHES NOMINAL IN |
| Thread Series Designator | UNF STUD THREAD |
| Thread Series Designator | UNF NUT THREAD |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.110 INCHES NOMINAL FIRST HOLE IN |
| 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 |
|---|---|
| 6784686 PRIMARY | Rolls-Royce Corporation (USA) |
| 6784686 | Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co (USA) |
| Reference | Meaning |
|---|---|
| 6784686 | 5/9 Secondary reference General Motors Corp |
| 6784686 | 5/9 Secondary reference Boeing Distribution, Inc. |
| 6784686 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 5307-00-627-7611 is a Stud,shouldered and Stepped, manufactured by Rolls-Royce Corporation, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-627-7611 has 2 manufacturer part numbers on file: 6784686 (Rolls-Royce Corporation), 6784686 (Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co).
Key specifications for 6784686: Surface Finish: 63.0 MICROINCHES OVERALL; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Cotter Pin Hole Diameter: 0.070 INCHES MINIMUM FIRST HOLE IN; Cotter Pin Hole Diameter: 0.080 INCHES MAXIMUM SECOND HOLE IN. 26 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.