The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-897-0637, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-897-0637 |
| Primary Part Number | FX10-1540-3TS |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Eyelet Outside Diameter | 0.375 INCHES NOMINAL IN |
| Material Accommodated Thickness | 0.344 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN |
| Diameter | 0.373 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.695 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Material | STEEL COMP 4037 STUD |
| Material | STEEL COMP 4140 GROMMET |
| Stud Assembly Style | STUD ASSEMBLY |
| Eyelet Length | 0.625 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 |
|---|---|
| FX10-1540-3TS PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| FX10-1540-3TS | 5/9 Secondary reference Illinois Tool Works Inc Fastex Div |
NSN 5325-00-897-0637 is a Stud Assembly,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-897-0637 has 1 manufacturer part number on file: FX10-1540-3TS (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for FX10-1540-3TS: Eyelet Outside Diameter: 0.375 INCHES NOMINAL IN; Material Accommodated Thickness: 0.344 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN; Diameter: 0.373 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Distance From Engaging Member to Largest Bearing Surface of Head: 0.695 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.