The Stud,stepped, cataloged under National Stock Number 5307-00-207-6388, is classified within Federal Supply Class 5307 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rolls-Royce Corporation. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-207-6388 |
| Primary Part Number | ST1228 |
| Item Name | Stud,stepped |
| FSC / FSG | 5307 / 53 — No Item Name Available |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Material Document and Classification | AMS 6320 ASSN STD SINGLE MATERIAL RESPONSE |
| Shank Diameter | 0.203 INCHES NOMINAL IN |
| Thread Series Designator | UNS STUD THREAD |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Pitch Diameters | +0.2779 TO 0.2794 INCHES STUD THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | STEPPED |
| Thread Series Designator | UNF NUT THREAD |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL COMP 8735 |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 18 STUD THREAD |
| Thread Length | 0.500 INCHES MINIMUM STUD THREAD IN |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Thread Length | 0.500 INCHES MINIMUM NUT THREAD IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5307-00-207-6388 is a Stud,stepped, manufactured by Rolls-Royce Corporation, classified under FSC 5307 (No Item Name Available). Status: active.
NSN 5307-00-207-6388 has 4 cross-referenced part numbers: ST1228 (General Motors Corp), ST1228 (General Motors Llc Dba General Motors Llc), ST1228 (Allison Transmission Inc Dba Allison Transmission, Inc), ST1228 (Rolls-Royce Corporation).
There are 2 known substitutes for 5307-00-207-6388: 5120-00-055-4013, 5120-01-367-0041. Verify interchangeability with system specifications before substitution.
Key specifications for ST1228: Thread Direction: RIGHT-HAND NUT THREAD; Overall Length: 1.500 INCHES NOMINAL IN; Material Document and Classification: AMS 6320 ASSN STD SINGLE MATERIAL RESPONSE; Shank Diameter: 0.203 INCHES NOMINAL IN. 18 total characteristics are documented in the Federal Logistics Information System.