The Stud,shouldered, cataloged under National Stock Number 5307-00-343-5403, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Astro Machine Co Inc Div Astro Machine Company. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-343-5403 |
| Primary Part Number | 3341100 |
| Item Name | Stud,shouldered |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Astro Machine Co Inc Div Astro Machine Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | H+4-169 FSCM 82577 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Nut End Shank Diameter | 0.137 INCHES NOMINAL IN |
| Thread Length | 0.190 INCHES MINIMUM AND 0.220 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.280 INCHES MINIMUM AND 0.310 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.132 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.138 INCHES STUD THREAD IN |
| Stud End Shank Diameter | 0.137 INCHES NOMINAL IN |
| Nut End Shank Length | 0.248 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Stud End Shank Length | 0.275 INCHES NOMINAL IN |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 32 STUD THREAD |
| Thread Quantity Per Inch | 32 NUT THREAD |
| Distance Across Flats | 0.312 INCHES NOMINAL IN |
| Shoulder Length | 0.034 INCHES MINIMUM AND 0.044 INCHES MAXIMUM 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 |
|---|---|
| 3341100 | Astro Machine Co Inc Div Astro Machine Company (USA) |
| Reference | Meaning |
|---|---|
| 3341100 | 5/9 Secondary reference Rourke Engineering Inc |
| 3341100 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-00-343-5403 is a Stud,shouldered, manufactured by Astro Machine Co Inc Div Astro Machine Company, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-343-5403 has 1 manufacturer part number on file: 3341100 (Astro Machine Co Inc Div Astro Machine Company).
Key specifications for 3341100: Surface Treatment Document and Classification: H+4-169 FSCM 82577 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Nut End Shank Diameter: 0.137 INCHES NOMINAL IN; Thread Length: 0.190 INCHES MINIMUM AND 0.220 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.280 INCHES MINIMUM AND 0.310 INCHES MAXIMUM NUT THREAD IN. 21 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.