The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-01-397-7952, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5307-01-397-7952 |
| Primary Part Number | 3223AS521-1 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL COMP 303 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3223AS521-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 3223AS521-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 3223AS521-1 | 5/9 Secondary reference Naval Air Warfare Center Aircraft Division Code 1.3.1 Bldg 562-1 |
NSN 5307-01-397-7952 is a Stud,shouldered and Stepped, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-397-7952 has 1 manufacturer part number on file: 3223AS521-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 3223AS521-1: Overall Length: 1.620 INCHES NOMINAL IN; Nominal Thread Size: 0.375 INCHES STUD THREAD IN; Surface Treatment: PASSIVATE OVERALL; Thread Class: 2A STUD THREAD A. 6 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.
NSN 5307-01-397-7952 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.