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.
What is the purpose of a flange bolt?
Used in automotive applications, plumbing, and more, flange bolts feature a washer like flange beneath the bolt head that speeds production time and distributes the clamping load, offering protection to the mating surface.
Can you use a lock washer on a flange bolt?
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 flange washer?
Flange washers are washers with a raised up inside diameter with a flange base. This allows them to be used in applications where a large bearing surface is needed but the material it is resting on is soft and can be damaged easily. Our flange washers are made in the USA.
Do flanges need washers?
While the principal fastener components include either bolts or studs and nuts, washers are also an important part of the system. Fasteners are a key component in a flange connection.
Are flange bolts better than washers?
Standard washers are typically softer than the nuts and bolts that they are used with and can often plastically deform under the high compressive stress that they must sustain. … Flange headed nuts and bolts do not suffer from this effect since the washer face is as strong as the bolt/nut itself.
Which goes first flat washer or lock washer?
When used correctly, a lock washer will hold the nut or other threaded fastener in place. To help it accomplish this, put the lock washer on first, below the fastener. If your project calls for other washers or hardware elements, they should go on before the lock washer so that it can hold them in place.
Are lock washers necessary?
When are lock washers needed? Lock washers are needed when the fastener assembly is subject to vibration or wherever back off is considered an issue. When should I use washers with bolts? Always use a washer between the installation material and the nut.
Is a flange nut self locking?
This locknut is a one-piece all metal self locking nut that also hosts a captive disc spring washer. The locking feature of this nut is achieved by the two de-pitched self locking slots found on the turret portion if the nut.
What is a flange washer used for?
Flange washers are designed to maintain sufficient load to tighten bolts and gaskets of a flange, an electrical connection or a similar application.
Do flange nuts lock?
Flange nuts are available both non-serrated and serrated to provide locking action. The serrations on Serrated Flange Nuts displace material on the mating surface when the nut is wrenched into place, forming a connection which resists loosening.
What kind of bolts are used on flanges?
Types of Bolts
In Petro and chemical industry for flange connections Stud Bolts and Hex Bolts are used. The Stud Bolt is a threaded rod with 2 heavy hexagon nuts, while the Hex Bolt has a head with one nut. Nuts and head are both six sided.
What is UNC stud bolts?
ASTM A193 stud bolts are available in national coarse (UNC) thread pitches, generally used in traditional applications, which means that there are 8 threads per inch (“thread per inch”) for rod diameters above 1 inch. B7 is the most common specification grade for stud bolts.
What is a hex head flange bolt?
Hex Flange Bolts are regular hex head bolts with built-in washer and externally threaded body. Flange bolts comes with plain or serrated flange configuration. … Hexagon flange bolts are commonly used in automotive industry, specially in truck and heavy vehicular frames.