Fasteners FAQs

What type of fastener do I need?

The type of fastener you’ll need will depend on the size and strength you need, as well as the environment that your fastener is in. For example, some stainless steel fasteners would be preferable in an environment where they will be exposed to salt (such as near the ocean), whereas some alloy steels might be preferable in an underwater environment. For assistance in choosing the right fastener for your situation, reach out to our Engineering team.

Which fasteners meet my ASTM code?: To identify which type of fastener meets your ASTM code, you can verify your specifications and needs by referencing our Fastener Detail Chart on page 212 of our Gasket Handbook.

What different thread pitches are offered?: Standard inch, metric, or custom pitch threads are available for our standard, specialty, and threaded rod fasteners through any of our 21 global branches.

What torque recommendations can I use for my specific bolt/fastener?: In general, torque recommendations for your bolt or fastener depend on the size and material of the bolt, desired bolt load, and lubricant used (if any). For guidance on your individual torque recommendations, contact our Engineering team.

How do coatings or platings affect the torque-tension relationship?: Different fastener coatings or platings will have different coefficients of friction. The lower the friction is, the more tension you will get for your torque.

What do I do with failed bolts that I want investigated?: If you need support in evaluating Lamons fastener materials and various failure modes, contact our Engineering team for expert assistance.

How do I prevent galling?

You can prevent galling by properly using lubricants and anti-galling coatings, as well as choosing materials that are less susceptible to galling.

What is galling?: Galling occurs when two surfaces in contact seize up as a result of metals fusing together with little or no heat.

Fastener terminology

What is tolerance?: Tolerance is the amount of acceptable variance in the dimension of a part.
What is shear strength?: Shear strength is the fastener material’s ability to resist forces that cause the material’s internal structure to slide against itself.
What is tensile strength?: Tensile strength is the maximum load that a material can support without fracture when being stretched.
What is tensile load?: Tensile load is a material’s ability to withstand longitudinal stress.
What is elongation?: Elongation is a measure of ductility, or a material’s ability to undergo significant deformation before rupturing or breaking.
What is torsional strength?: Torsional strength is the ability of a material to withstand a twisting load.
What is yield strength?: Yield strength is the maximum stress that can be applied to a material before it permanently deforms.
What is fatigue strength?: Fatigue strength is the highest stress that a material can withstand in a given number of cycles without breaking.

Which fasteners meet my ASTM code?: To identify which type of fastener meets your ASTM code, you can verify your specifications and needs by referencing our Fastener Detail Chart on page 212 of our Gasket Handbook.

Standard inch, metric, or custom pitch threads are available for our standard, specialty, and threaded rod fasteners through any of our 21 global branches.

In general, torque recommendations for your bolt or fastener depend on the size and material of the bolt, desired bolt load, and lubricant used (if any). For guidance on your individual torque recommendations, contact our Engineering team.

Different fastener coatings or platings will have different coefficients of friction. The lower the friction is, the more tension you will get for your torque.

If you need support in evaluating Lamons fastener materials and various failure modes, contact our Engineering team for expert assistance.

You can prevent galling by properly using lubricants and anti-galling coatings, as well as choosing materials that are less susceptible to galling.

What is galling?: Galling occurs when two surfaces in contact seize up as a result of metals fusing together with little or no heat.

What is tolerance?: Tolerance is the amount of acceptable variance in the dimension of a part.
What is shear strength?: Shear strength is the fastener material’s ability to resist forces that cause the material’s internal structure to slide against itself.
What is tensile strength?: Tensile strength is the maximum load that a material can support without fracture when being stretched.
What is tensile load?: Tensile load is a material’s ability to withstand longitudinal stress.
What is elongation?: Elongation is a measure of ductility, or a material’s ability to undergo significant deformation before rupturing or breaking.
What is torsional strength?: Torsional strength is the ability of a material to withstand a twisting load.
What is yield strength?: Yield strength is the maximum stress that can be applied to a material before it permanently deforms.
What is fatigue strength?: Fatigue strength is the highest stress that a material can withstand in a given number of cycles without breaking.

Fasteners FAQs

Frequently Asked Questions

What type of fastener do I need?

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