The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-184-2045, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-184-2045 |
| Primary Part Number | 3M1055C6A6 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Drive Type | SOCKET |
| Material Accommodated Thickness | 0.251 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.480 INCHES MINIMUM IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Stud Shank Major Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Stud Thread Size and Series/type Designator | 0.250-28 UNIFIED NATIONAL JOINT FINE (UNJF) |
| Grip Length | 0.842 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 |
|---|---|
| 3M1055C6A6 PRIMARY | The Boeing Company Div Defense (USA) |
| 3223S6-6 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 3223S6-6 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| 3220S6-6 | 5/9 Secondary reference U.S. Government activity |
| 3223S6-6 | 5/2 Secondary reference U.S. Government activity |
| 3220S6-6 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Voi-Shan Products |
| 3220S6-6 | 5/9 Secondary reference U.S. Government activity |
| 3M1055C6B6 | 5/9 Secondary reference The Boeing Company Div Defense |
| 3223S6-6 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5325-01-184-2045 is a Stud,turnlock Fastener, manufactured by The Boeing Company Div Defense, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-184-2045 has 3 manufacturer part numbers on file: 3M1055C6A6 (The Boeing Company Div Defense), 3223S6-6 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), 3223S6-6 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for 3M1055C6A6: Drive Type: SOCKET; Material Accommodated Thickness: 0.251 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK; Extension Length: 0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN. 13 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.