The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-589-7296, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Boeing Defence Australia Ltd. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-589-7296 |
| Primary Part Number | BACS21EE4RB |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Boeing Defence Australia Ltd |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Eyelet Outside Diameter | 0.247 INCHES NOMINAL IN |
| Drive Type | CROSS RECESS |
| Material Document and Classification | AMS 6300 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A332 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A752 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A547 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE STUD |
| Material Document and Classification | ASTM A228 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A228M ASSN STD SINGLE MATERIAL RESPONSE OR ASMS 6450 ASSN STD SINGLE MATERIAL RESPONSE PIN |
| Material Document and Classification | ASTM A228 ASSN STD SINGLE MATERIAL RESPONSE OR SASTM A228M ASSN STD SINGLE MATERIAL RESPONSE LOCKSPRING |
| Diameter | 0.500 INCHES NOMINAL IN |
| Securing Device Type | SPRING |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.580 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL PIN |
| Material | STEEL LOCKSPRING |
| Material | STEEL COMP 4037 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 8740 STUD |
| Stud Assembly Style | STUD ASSEMBLY |
| 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 |
|---|---|
| BACS21EE4RB | Boeing Defence Australia Ltd (AUS) |
| Reference | Meaning |
|---|---|
| BACS21EE4RB | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-589-7296 is a Stud Assembly,turnlock Fastener, manufactured by Boeing Defence Australia Ltd, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-589-7296 has 1 manufacturer part number on file: BACS21EE4RB (Boeing Defence Australia Ltd).
Key specifications for BACS21EE4RB: Surface Treatment Document and Classification: QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Eyelet Outside Diameter: 0.247 INCHES NOMINAL IN; Drive Type: CROSS RECESS; Material Document and Classification: AMS 6300 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A332 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A752 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A547 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE STUD. 15 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.