The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-017-6414, 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 25 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-017-6414 |
| Primary Part Number | 3500-325-45-AS1B |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE RECEPTACLE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE LOCKSPRING |
| Eyelet Outside Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.062 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE HEAD |
| Material Document and Classification | MIL-S-8695 MIL SPEC SINGLE MATERIAL RESPONSE STUD |
| Material Document and Classification | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE RECEPTACLE |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE LOCKSPRING |
| Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.595 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | CADMIUM LOCKSPRING |
| Surface Treatment | CADMIUM STUD |
| Surface Treatment | ANODIZE HEAD |
| Surface Treatment | ANODIZE RECEPTACLE |
| Material | STEEL COMP 4037 STUD |
| Material | STEEL LOCKSPRING |
| Material | ALUMINUM ALLOY 6061 RECEPTACLE |
| Material | ALUMINUM ALLOY 6061 HEAD |
| Stud Assembly Style | STUD ASSEMBLY |
| Stud Diameter | 0.193 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Eyelet Length | 0.148 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 |
|---|---|
| 3500-325-45-AS1B PRIMARY | Southco Inc (USA) |
| 1936444-1 PRIMARY | Honeywell Intl Inc Defense Avionics Systems (USA) |
| 135273-1 | Raytheon Company (USA) |
| BH-5903 PRIMARY | Ametek, Inc. Div Aerospace & Defense (USA) |
| D5-P325-45ASBNA | Southco Inc (USA) |
| Reference | Meaning |
|---|---|
| X-939 | 5/9 Secondary reference Southco Inc |
| D1400-6A1 | 5/9 Secondary reference U.S. Government activity |
| 5307PL1360876 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| P3-1-4-45 | 5/9 Secondary reference Southco Inc |
| P325-45 | 5/9 Secondary reference Southco Inc |
| BACS21DD1 | 5/9 Secondary reference The Boeing Company |
| P3 1-4-45 | 5/9 Secondary reference Southco Inc |
| BACS21F7-38 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company |
| DM1400-6A1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| D1400-6A1 | 5/9 Secondary reference Huck International, Inc. Div Huck Products Division |
| PFSC3-1-2-38ABL | C/1 Advisory reference — outside the item-of-supply concept Southco Inc |
| 3500-325-45-C3C | 5/9 Secondary reference Southco Inc |
NSN 5325-00-017-6414 is a Stud Assembly,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-017-6414 has 5 manufacturer part numbers on file: 3500-325-45-AS1B (Southco Inc), 1936444-1 (Honeywell Intl Inc Defense Avionics Systems), 135273-1 (Raytheon Company), BH-5903 (Ametek, Inc. Div Aerospace & Defense), D5-P325-45ASBNA (Southco Inc).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-380-1830. Verify interchangeability with system specifications before substitution.
Key specifications for 3500-325-45-AS1B: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE STUD; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE HEAD; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE RECEPTACLE; Surface Treatment Document and Classification: QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE LOCKSPRING. 25 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.