The Stud,shouldered, cataloged under National Stock Number 5307-01-503-4020, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Demark Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5307-01-503-4020 |
| Primary Part Number | 43140-00330-2 |
| Item Name | Stud,shouldered |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Demark Inc |
| Status | ACTIVE |
| Thread Length | 0.750 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 1.350 INCHES NOMINAL NUT THREAD IN |
| Style Designator | SHOULDERED |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.375 INCHES NUT THREAD IN |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 16 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | ALUMINUM ALLOY 6061 |
| Distance Across Flats | 0.750 INCHES NOMINAL IN |
| Shoulder Length | 0.380 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) 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 |
|---|---|
| 43140-00330-2 PRIMARY | Demark Inc (USA) |
| 43140-00330-2 | Naval Air Warfare Ctr Aircraft Div (USA) |
| Reference | Meaning |
|---|---|
| 43140-00330 | D/9 Drawing number reference only Naval Air Warfare Ctr Aircraft Div |
NSN 5307-01-503-4020 is a Stud,shouldered, manufactured by Demark Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-503-4020 has 2 manufacturer part numbers on file: 43140-00330-2 (Demark Inc), 43140-00330-2 (Naval Air Warfare Ctr Aircraft Div).
Key specifications for 43140-00330-2: Thread Length: 0.750 INCHES NOMINAL STUD THREAD IN; Thread Length: 1.350 INCHES NOMINAL NUT THREAD IN; Style Designator: SHOULDERED; Overall Length: 2.480 INCHES NOMINAL IN. 16 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.