The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-616-2430, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-616-2430 |
| Primary Part Number | HS4431-2SW |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Head Length | 0.720 INCHES NOMINAL IN |
| Eyelet Outside Diameter | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Material Accommodated Thickness | 0.069 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN |
| Stud Head Height | 0.440 INCHES NOMINAL IN |
| Securing Device Type | RING |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.581 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER WING |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING STUD |
| Material | STEEL COMP 302 PIN |
| Material | STEEL COMP 302 EJECTOR SPRING |
| Material | STEEL CORROSION RESISTING EYELET |
| Stud Assembly Style | STUD ASSEMBLY |
| Eyelet Length | 0.322 INCHES NOMINAL IN |
| 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 |
|---|---|
| HS4431-2SW PRIMARY | The Boeing Company (USA) |
NSN 5325-01-616-2430 is a Stud Assembly,turnlock Fastener, manufactured by The Boeing Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-616-2430 has 1 manufacturer part number on file: HS4431-2SW (The Boeing Company).
Key specifications for HS4431-2SW: Head Length: 0.720 INCHES NOMINAL IN; Eyelet Outside Diameter: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Material Accommodated Thickness: 0.069 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN; Stud Head Height: 0.440 INCHES NOMINAL IN. 14 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.