What is a serrated flange nut?
Serrated flange nuts are hex nuts with non-spinning washers attached at the bottom. Underneath the washers are serrations which allow the nuts to securely fasten when vibrations are present and prevent them from being used with washers or on surfaces that can be scratched.
How do serrated flange nuts work?
Serrated flange nut The flange may be serrated to provide a locking action. On a serrated flange nut, the serrations are angled such that they keep the nut from rotating in the direction that would loosen the nut. Because of the serrations they cannot be used with a washer or on surfaces that must not be scratched.
When would you use a serrated flange?
Serrated tooth nuts work well for oversized or irregularly shaped holes, since the flange covers any discrepancies and serrations cover the entire bearing surface.
Is a flange nut A lock nut?
Flange nuts are hex nuts with a bottom circular flange that is larger than their top hex section. There are two types commonly available: flange lock nuts, which are prevailing torque type lock nuts, and serrated flange nuts, which are free spinning but have a serrated bearing surface to grip the mating surface.
Can I use a nut and washer instead of a flange nut?
Using a hex nut and washer instead of a flange nut introduces an additional inner interface, and the associated additional preload loss due to embedding and relaxation in that interface.
What are serrated flange bolts used for?
Steel serrated flange bolts feature a scored grip under the head to help vibration. The serrated head bites into the surface to reduce vibration that can cause loosening. These fasteners are often found in mechanical and plumbing applications.
Do flange bolts need lock washers?
Given that you said you are using it against a painted surface, using a flange bolt with a lock washer should be no problem. It might be a problem if establishing a specific and/or critical torque on the bolt is necessary for it to do its job. If it’s a body bolt or one with a relatively low torque spec.
How do you measure a flange nut?
Stretch the tape measure across the nut’s diameter to the flat-side directly across from the one your pulling from. If the nut is metric, count the number of lines on the tape measure to find the measurement. If you count 9 lines, the size is a 9-mm (millimeter) nut.
Can I use a washer instead of a flange bolt?
It can be significantly more on surfaces that are painted. The effect of using washers instead of flanged nuts and bolts is to increase the number of interfaces within the joint. Since each face will sustain an embedding loss, the net effect of using washers is to increase the loss of bolt tension due to this effect.
Should you use washers with flange nuts?
Washers. Addition of steel washers to a fastener system is recommended to improve translation of torque input into bolt preload. Washers provide a smooth bearing surface, reducing friction between nut and flange. This effect is greatest when washers are through-hardened.
Can you use a lock washer with a flange nut?
Given that you said you are using it against a painted surface, using a flange bolt with a lock washer should be no problem.
What is a top lock flange nut?
Top Lock Flange Nut Lock Nuts. Locknuts lock fasteners in place to keep them from backing out or loosening due to vibration or torque. A locknut is commonly used in place of a standard nut on vibrating machinery and when joining soft materials. Types of locknuts include those with serrated flanges or tooth washers that dig into surfaces and those with nylon inserts or deformed threads that grip tightly onto fastener threads.
What is a metric flange nut?
Metric flange nuts are designed to fit on metric-sized bolts or threaded rods. The large circular base on a flange nut provides even distribution of pressure and creates a firm hold. More torque is required to loosen the nut. Metric measurement systems are common throughout much of the world, while the US uses a mix of metric and standard, or
What is a hex flange nut?
Hex Flange Nuts are hex nuts with a wide flanged portion near one end that acts as an integrated non-spinning washer. Flange nuts are used to spread the load placed on the nut over a wider surface area to prevent damage to the installation material. They can come in serrated or non-serrated styles.
What is a hex flange bolt?
A flange hex bolt is a bolt that has a washer-like flange cast into the hexagonal head of the bolt. Designed to be used without the aid of a flat or locking-style washer, the flange hex bolt is manufactured to properly displace the torque and clamping force of the bolt over a wider area than that of a typical hex head bolt.