Exhaust Brass Manifold Nuts | 5/16" UNF | Qty: 25

Exhaust Brass Manifold Nuts 5/16" Inch UNF | Pack of 25

• Nut Size: 5/16" inch
• Thread Standard: UNF (Fine)
• Quantity: Pack of 25
• FREE DELIVERY available in the UK, see details below
• Fast Dispatch

We also have Great Deals on:

• EXHAUST MANIFOLD STUDS & NUTS
• EXHAUST CLIPS
• AUTOMOTIVE SUPPLIES

Brass Nut Advantages:

• Water Resistant
• Corrosion Resistant

Brass Nut UNC / UNF Thread Type:

Our brass manifold nuts are available in both UNC and UNF thread sizes.  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. 

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 also 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.