The Stud,stepped, cataloged under National Stock Number 5307-00-838-2156, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-838-2156 |
| Primary Part Number | 306374CLB |
| Item Name | Stud,stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| Shank Diameter | 0.368 INCHES NOMINAL IN |
| Surface Finish | 64.0 MICROINCHES STUD THD |
| 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 |
| Thread Length | 0.690 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.720 INCHES NOMINAL STUD THREAD IN |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Style Designator | STEPPED |
| Thread Pitch Diameters | +0.5164 TO 0.5179 INCHES STUD THREAD IN |
| Material Document and Classification | AMS 7456 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.562 INCHES STUD THREAD IN |
| Surface Treatment | CADMIUM SHANK |
| Surface Treatment | CADMIUM NUT THD |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 12 STUD THREAD |
| Material | STEEL |
| Thread Series Designator | UNS STUD 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 |
|---|---|
| 306374CLB PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
| Reference | Meaning |
|---|---|
| 306374CLB | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5307-00-838-2156 is a Stud,stepped, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5307, Studs. Status: active.
NSN 5307-00-838-2156 has 1 manufacturer part number on file: 306374CLB (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
Key specifications for 306374CLB: Shank Diameter: 0.368 INCHES NOMINAL IN; Surface Finish: 64.0 MICROINCHES STUD THD; 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. 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.