The Stud,stepped, cataloged under National Stock Number 5307-00-616-1787, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-616-1787 |
| Primary Part Number | 37931P009 |
| Item Name | Stud,stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.250 INCHES NOMINAL IN |
| Cotter Pin Hole Diameter | 0.070 INCHES MINIMUM FIRST HOLE IN |
| Thread Length | 0.500 INCHES MINIMUM STUD THREAD IN |
| Thread Length | 0.500 INCHES MINIMUM NUT THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | STEPPED |
| Thread Pitch Diameters | +0.2869 TO 0.2884 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 | 0.250 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Surface Treatment | CADMIUM SHANK |
| Surface Treatment | CADMIUM NUT THD |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 18 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNS STUD THREAD |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.141 INCHES MINIMUM 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 |
|---|---|
| 37931P009 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 37931P009 | 5/9 Secondary reference General Motors Corp |
| 37931P009 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 37931P009 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 5307-00-616-1787 is a Stud,stepped, manufactured by Rolls-Royce Corporation, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-616-1787 has 1 manufacturer part number on file: 37931P009 (Rolls-Royce Corporation).
Key specifications for 37931P009: Shank Diameter: 0.250 INCHES NOMINAL IN; Cotter Pin Hole Diameter: 0.070 INCHES MINIMUM FIRST HOLE IN; Thread Length: 0.500 INCHES MINIMUM STUD THREAD IN; Thread Length: 0.500 INCHES MINIMUM NUT THREAD IN. 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.