The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-475-8642, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-475-8642 |
| Primary Part Number | 3M1250AC6-4 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Eyelet Outside Diameter | 0.334 INCHES NOMINAL IN |
| Diameter | 0.4473 INCHES MINIMUM AND 0.4475 INCHES MAXIMUM IN |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.710 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Stud Assembly Style | STUD ASSEMBLY |
| Eyelet Length | 0.633 INCHES MINIMUM AND 0.643 INCHES MAXIMUM 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 |
|---|---|
| CA17202-4TXR | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| CA17202-4TXR | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3M1250AC6-4A | The Boeing Company Div Defense (USA) |
| 3M1250AC6-4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| MT172AC6-4 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-01-475-8642 is a Stud Assembly,turnlock Fastener, manufactured by The Boeing Company Div Defense, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-475-8642 has 4 manufacturer part numbers on file: CA17202-4TXR (Howmet Global Fastening Systems Inc. Div Tridair Products), CA17202-4TXR (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), 3M1250AC6-4A (The Boeing Company Div Defense), 3M1250AC6-4 (The Boeing Company Div Defense).
Key specifications for 3M1250AC6-4: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Eyelet Outside Diameter: 0.334 INCHES NOMINAL IN; Diameter: 0.4473 INCHES MINIMUM AND 0.4475 INCHES MAXIMUM IN; Distance From Engaging Member to Largest Bearing Surface of Head: 0.710 INCHES NOMINAL IN. 9 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.