Hexagon Steel Nuts 3/8" inch BZP UNC | Qty: 50
- Size: 3/8" inch
- Material: Steel
- Bright Zinc Plated
- Corrosion Resistant
- Type: UNC - Coarse Thread
- Quantity: Pack of 50
- FREE UK DELIVERY - see details below
Hex Steel Nuts:
This product is a pack of high quality standard 6-sided hex nuts. They are constructed from steel, the most common type of nut, and are bright zinc plated for maximum durability and corrosion resistance. The nut size, (represented above as the diameter), indicates the size of bolt that these nut fasteners have been designed for use with. We stock a comprehensive range of both Imperial and Metric size nuts and bolts.
Which Nut - UNC or UNF?
UNC and UNF are the two main categories of unified thread standard. For a given nut size of nominal diameter, Unified Fine Pitch (UNF) and Unified Coarse Pitch (UNC) represent two different thread densities. It is important you choose the correct steel nut.
UNC is the most commonly used. The choice of UNC versus UNF is influenced by the specific application of the job at hand and each type delivers different advantages.
UNC coarse threads are more durable and have greater resistance to stripping and cross-threading. They are also less susceptible to being nicked or damaged and therefore they do not have to be "handled delicatley" compared to fine thread (UNF) nuts. Coarse nuts install much more quickly and are not not affected by plating buildup to the same extent as fine UNF threads.
UNF fine threaded bolts are stronger than UNC coarse threaded bolts of the same hardness. This is due to the fine threaded bolts having a slightly larger tensile stress area. Fine threads also have less tendency to loosen under vibration due to the fact that they have a smaller helix angle than coarse threads.
UNF has the advantage of allowing for finer adjustments in applications that require this characteristic. They can also be more easily tapped into difficult to tap materials and thin walled sections and they require less tightening torque to achieve equivalent preloads to the corresponding UNC nuts/ bolts.
Bright Zinc Plated Protection:
These steel nuts are BZP plated. They have been coated with a corrosion resistant bright zinc plated finish for maximum protection. They have a shiny silver/ golden appearance which is commonly referred to as clear or yellow zinc respectively. This technology is crucial in helping to prevent galvanic corrosion by insulating steel nuts from aluminium surfaces.
Corrosion Resistant Nuts:
Galvanic corrosion, often referred to as Bimetallic Corrosion, is an electrochemical process whereby a metal nut corrodes quickly when it is placed in electrical contact with another metal in the presence of an electrolyte. In the British climate BZP is essential for outdoor work.
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