The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-465-0087, 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 12 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-465-0087 |
| Primary Part Number | HS4431-6 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, CLASS 2, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Eyelet Outside Diameter | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.180 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN |
| Diameter | 0.500 INCHES NOMINAL IN |
| Securing Device Type | SPRING |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.910 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| HS4431-6 | Monadnock Company, the Dba Lisi Aerospace (USA) |
| HS4431-6 PRIMARY | The Boeing Company (USA) |
| HS4431-6 | Howmet Global Fastening Systems Inc (USA) |
| HS4431-6 | Ho-Ho-Kus, Inc (USA) |
| Reference | Meaning |
|---|---|
| HS4431-6 | 3/9 Design control — primary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5325-01-465-0087 is a Stud Assembly,turnlock Fastener, manufactured by The Boeing Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-465-0087 has 4 manufacturer part numbers on file: HS4431-6 (Monadnock Company, the Dba Lisi Aerospace), HS4431-6 (The Boeing Company), HS4431-6 (Howmet Global Fastening Systems Inc), HS4431-6 (Ho-Ho-Kus, Inc).
Key specifications for HS4431-6: Surface Treatment Document and Classification: QQ-P-416, CLASS 2, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Eyelet Outside Diameter: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Drive Type: SLOTTED; Material Accommodated Thickness: 0.180 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN. 12 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.