Industrial fasteners create joints that can be assembled, inspected and serviced. The visible head style is only one part of the specification: thread system, property class, material, coating, preload and joint geometry determine performance.
Bolts, screws and studs
A bolt commonly works with a nut, while a screw engages a tapped hole or forms its own mating thread. Studs can protect expensive tapped housings and simplify repeated assembly. Fully and partially threaded shanks distribute load differently through the joint.
Nuts, washers and locking
Washers can spread bearing pressure or protect a surface, but they do not automatically prevent loosening. Prevailing-torque nuts, mechanical locking devices, adhesives and correctly maintained preload address different failure mechanisms.
Specify the joint
State the governing dimensional and mechanical standard, strength class, finish, thread tolerance and traceability. Review corrosion, temperature, fatigue and galvanic compatibility. Tightening method should deliver controlled preload without damaging threads or joined parts.
