Where Do Non-threaded Fasteners Often Appear?

There are threaded fasteners such like the closed end rivet nut and steel rivet nuts that can firmly hold parts together, but also have non-threaded fasteners to give permanent joints regardless dissimilar or similar materials, or metallic and non-metallic, those non-threaded fasteners include rivets, eyelets, nails and pins.

How non-threaded fasteners appear to work?

When the force applied to the rivet is sufficiently high, plastic deformation occurs and the shank of the rivet increases in diameter as its length decreases. That part of the shank within the hole increases in diameter until it fills the hole and the unsupported part of the shank outside the hole continues to deform until a head is formed.

Which materials are required to be the rivet material?

A ductile material should be used for the rivet material, e.g. mild steel, copper, brass, aluminium alloy. For some materials the required ductility is obtained in the cold state, in other cases the riveting takes place hot. Where the riveting force might damage or distort the materials being joined, tubular or semi-tubular rivets might be used instead of solid rivets.

Pins and C-clip

1.As a member of the family, taper pins are used to join wheels onto the ends of shafts, the pin just being driven through holes in the two parts until it is fully home and giving a tight fit.

2.Another form of pin is the split cotter pin. This is used where movement in the joint is required or as a locking device : for slotted nuts on bolts.

3.The C-clip is used to lock components on shafts, the clip generally fitting into a groove on the shaft . Most C-clips are made from hardened and tempered carbon steel.