The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-00-149-4787, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-149-4787 |
| Primary Part Number | 127664P8 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Nut End Shank Diameter | 0.325 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN |
| Thread Length | 0.562 INCHES MINIMUM NUT THREAD IN |
| Thread Length | 0.938 INCHES MINIMUM STUD THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | SHOULDERED AND STEPPED |
| Thread Pitch Diameters | +0.4040 TO 0.4063 INCHES STUD THREAD IN |
| Material Document and Classification | AMS 6320 ASSN STD 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 | 0.438 INCHES STUD THREAD IN |
| Departure From Cited Designator | AS MODIFIED BY MATERIAL |
| Shoulder Diameter | 0.548 INCHES MINIMUM AND 0.552 INCHES MAXIMUM IN |
| Stud End Shank Diameter | 0.325 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut End Shank Length | 0.278 INCHES MINIMUM AND 0.298 INCHES MAXIMUM IN |
| Stud End Shank Length | 0.168 INCHES NOMINAL IN |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 14 STUD THREAD |
| Material | STEEL COMP 8735 |
| Shoulder Length | 0.093 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 127664P8 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 127664P008 | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
| Reference | Meaning |
|---|---|
| 127664P008 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5307-00-149-4787 is a Stud,shouldered and Stepped, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-149-4787 has 2 manufacturer part numbers on file: 127664P8 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 127664P008 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
Key specifications for 127664P8: Nut End Shank Diameter: 0.325 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN; Thread Length: 0.562 INCHES MINIMUM NUT THREAD IN; Thread Length: 0.938 INCHES MINIMUM STUD THREAD IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. 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.