The Stud,plain, cataloged under National Stock Number 5307-00-349-2544, 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 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-349-2544 |
| Primary Part Number | 4026021P3 |
| Item Name | Stud,plain |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Thread Length | 0.690 INCHES MINIMUM AND 0.790 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.960 INCHES MINIMUM AND 1.030 INCHES MAXIMUM NUT THREAD IN |
| Hardness Rating | 248.0 ROCKWELL C MINIMUM AND 341.0 ROCKWELL C MAXIMUM |
| Thread Pitch Diameters | +0.1974 TO 0.2500 INCHES STUD THREAD IN |
| Material Document and Classification | AMS 5736 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 | 0.250 INCHES STUD THREAD IN |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 20 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| 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 | F |
| Part Number | Manufacturer |
|---|---|
| 4026021P3 | Rtx Corporation Div Pratt & Whitney (USA) |
| 4026021P3 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 5307PL0896288 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4026021P3 | 5/9 Secondary reference Thompson Aerospace, Llc Dba Thompson Aerospace Llc |
| 4026021P3 | 5/9 Secondary reference Royal Oak Gage, Inc |
NSN 5307-00-349-2544 is a Stud,plain, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-349-2544 has 2 manufacturer part numbers on file: 4026021P3 (Rtx Corporation Div Pratt & Whitney), 4026021P3 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 4026021P3: Thread Length: 0.690 INCHES MINIMUM AND 0.790 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.960 INCHES MINIMUM AND 1.030 INCHES MAXIMUM NUT THREAD IN; Hardness Rating: 248.0 ROCKWELL C MINIMUM AND 341.0 ROCKWELL C MAXIMUM; Thread Pitch Diameters: +0.1974 TO 0.2500 INCHES STUD THREAD IN. 15 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.