The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-269-5201, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Southco Inc. Government technical data includes 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-269-5201 |
| Primary Part Number | 1219-PS4-2-Z3C |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE RECEPTACLE |
| Surface Treatment Document and Classification | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE RETAINER |
| Eyelet Outside Diameter | 0.531 INCHES NOMINAL IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.085 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5568,COMP 631 ASSN STD SINGLE MATERIAL RESPONSE PIN |
| Material Document and Classification | AMS 5678,COMP 631 ASSN STD SINGLE MATERIAL RESPONSE EJECTOR SPRING |
| Material Document and Classification | ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE RECEPTACLE |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE CAP |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE RETAINER |
| Diameter | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Securing Device Type | SPRING |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | CHROMATE AND ZINC RECEPTACLE |
| Surface Treatment | CHROMATE AND ZINC RETAINER |
| Material | STEEL RETAINER |
| Material | STEEL CORROSION RESISTING EJECTOR SPRING |
| Material | STEEL CORROSION RESISTING PIN |
| Material | STEEL RECEPTACLE |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 CAP |
| Stud Assembly Style | STUD ASSEMBLY |
| Stud Diameter | 0.250 INCHES NOMINAL IN |
| Eyelet Length | 0.500 INCHES MINIMUM AND 0.530 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 |
|---|---|
| 1219-PS4-2-Z3C PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| SPS4-2 | 3/9 Design control — primary reference Southco Inc |
| GR520CP-2 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5325-01-269-5201 is a Stud Assembly,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-269-5201 has 1 manufacturer part number on file: 1219-PS4-2-Z3C (Southco Inc).
Key specifications for 1219-PS4-2-Z3C: Surface Treatment Document and Classification: ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE RECEPTACLE; Surface Treatment Document and Classification: ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE RETAINER; Eyelet Outside Diameter: 0.531 INCHES NOMINAL IN; Drive Type: SLOTTED. 24 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.