The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-01-009-6783, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-009-6783 |
| Primary Part Number | 179134P20 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.326 INCHES MINIMUM AND 0.366 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.540 INCHES NOMINAL NUT THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | SHOULDERED AND STEPPED |
| Thread Pitch Diameters | +0.3010 TO 0.3025 INCHES STUD THREAD IN |
| Material Document and Classification | AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6327 ASSN STD 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 OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 18 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Distance Across Flats | 0.493 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Shoulder Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thread Series Designator | UNS STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) NUT 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 |
|---|---|
| 179134-P20 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 179134P20 PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
NSN 5307-01-009-6783 is a Stud,shouldered and Stepped, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5307, Studs. Status: active.
NSN 5307-01-009-6783 has 2 manufacturer part numbers on file: 179134-P20 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 179134P20 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
Key specifications for 179134P20: Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.326 INCHES MINIMUM AND 0.366 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.540 INCHES NOMINAL NUT THREAD IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. 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.