NUT 5/16 CLINCH NUT UNC
Clinch nut 5/16-18 UNC
Captive nut for body panels
Clinch nut (or captive nut) with 5/16-18 UNC thread for attachment to body panels and floor plates. This self-clinching nut is permanently installed in thin sheet metal and provides a strong, reusable thread where conventional tapping is not possible.
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Thread size 5/16-18 UNC |
Type Clinch nut (captive nut) |
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Material Steel |
Application Body panels and floor plate |
Features
- Thread: 5/16-18 UNC (Unified National Coarse)
- Original part number: A-3549 / A-3550
- Self-clinching attachment in sheet metal
- Provides strong, reusable thread
- Suitable for thin sheet metal where tapping is not possible
★ Professional quality clinch nut for durable attachment in body panels. Requires special installation tooling for correct assembly.
Application
Used for attachment of various components to body panels, floor plates and other sheet metal. Often applied for floor drain plugs, brackets and mounting points where access is only possible from one side.
Installation notes
Installation requires parallel pressing force with special tooling. The nut must be pressed into a pre-drilled hole in the sheet metal, whereby the ductile material flows around the clinch profile and creates a strong permanent connection. The sheet metal must be softer than the clinch nut itself for correct installation. Access to both sides of the panel is necessary during assembly.
Compatibility
Clinch nuts are used on various WWII military vehicles for body attachments. Note: early versions may have a different clinch profile than later types. Check the original part number (A-3549/A-3550) for exact compatibility.
Historical context
Clinch nuts were extensively used during WWII in military vehicles to create strong threaded connections in thin sheet metal without access to the rear side after assembly. This technique enabled efficient mass production.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
ALL_CATEGORIES : 03 SGI BODY FLOOR PARTS
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Ford GPW (early) | 1942 |
| Ford GPW | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |