The Stud,stepped, cataloged under National Stock Number 5307-01-103-9770, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 23 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 | 5307-01-103-9770 |
| Primary Part Number | 6784209P012 |
| Item Name | Stud,stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Shank Diameter | 0.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE NUT THD |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE SHANK |
| Cotter Pin Hole Diameter | 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN |
| Thread Length | 0.531 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.625 INCHES NOMINAL STUD THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | STEPPED |
| Thread Pitch Diameters | +0.3474 TO 0.3490 INCHES STUD THREAD IN |
| Material Document and Classification | EMS85010,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Surface Treatment | CADMIUM SHANK |
| Surface Treatment | CADMIUM NUT THD |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNS STUD THREAD |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.094 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 |
|---|---|
| 6784209P012 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
NSN 5307-01-103-9770 is a Stud,stepped, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-103-9770 has 1 manufacturer part number on file: 6784209P012 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6784209P012: Shank Diameter: 0.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE NUT THD; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE SHANK; Cotter Pin Hole Diameter: 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN. 23 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.