The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-184-7785, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-184-7785 |
| Primary Part Number | ST3M472F5C2040M |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 1.991 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Diameter | 0.560 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Stud Shank Major Diameter | 0.262 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Grip Length | 2.227 INCHES MINIMUM AND 2.237 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 |
|---|---|
| 112034-2040 | Monadnock Company, the Dba Lisi Aerospace (USA) |
| ST3M472F5C2040M | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M472F5C2040M PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M472F5C2040M | Trico Manufacturing Inc. (USA) |
| ST3M472F5C2040M | Monadnock Company, the Dba Lisi Aerospace (USA) |
| Reference | Meaning |
|---|---|
| ST3M472F5C2040M | 5/9 Secondary reference Trw Inc Trw Electronics Components Trw Cinch-Monadnock Div |
NSN 5325-01-184-7785 is a Stud,turnlock Fastener, manufactured by The Boeing Company Div Defense, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-184-7785 has 5 manufacturer part numbers on file: 112034-2040 (Monadnock Company, the Dba Lisi Aerospace), ST3M472F5C2040M (Fastener Innovation Technology, Inc. Dba F I T), ST3M472F5C2040M (The Boeing Company Div Defense), ST3M472F5C2040M (Trico Manufacturing Inc.), ST3M472F5C2040M (Monadnock Company, the Dba Lisi Aerospace).
Key specifications for ST3M472F5C2040M: Drive Type: SLOTTED; Material Accommodated Thickness: 1.991 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK; Diameter: 0.560 INCHES NOMINAL IN. 9 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.