The Lock Spring,turnlock Fastener, cataloged under National Stock Number 5325-01-256-5289, 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 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-256-5289 |
| Primary Part Number | 1219-4225-C3C |
| Item Name | Lock Spring,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Center to Center Distance Between Eyes | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Eye Diameter | 0.094 INCHES NOMINAL IN |
| Lockspring Overall Height | 0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| Stock Diameter | 0.062 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303PB OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL |
| Lockspring Style | LOCKSPRING |
| 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 |
|---|---|
| 1219-4225-C3C PRIMARY | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| S4-225CBC | 5/9 Secondary reference Southco Inc |
| S4-225C | 5/9 Secondary reference Southco Inc |
| 128-0285-001 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-01-256-5289 is a Lock Spring,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-256-5289 has 1 manufacturer part number on file: 1219-4225-C3C (Southco Inc).
Key specifications for 1219-4225-C3C: Center to Center Distance Between Eyes: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Eye Diameter: 0.094 INCHES NOMINAL IN; Lockspring Overall Height: 0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN. 8 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.