PVDF / Kynar Socket Head Cap Screws

Exceptional purity and chemical resistance with moderate strength

• High Purity and low extractables
• Chemically resistant to most common solvents including acids, salts, oils and steam
• Mechanical strength and toughness to 150°C (300°F)
• Resistance to ultraviolet, nuclear radiation, and standard sterilization methods
• Resistance to weathering and fungi
• Material datasheet for PVDF
• PVDF socket head cap screw features and benefits

PVDF socket head cap screws are made from a tough engineered fluoro-thermoplastic that offers a unique balance of excellent chemical resistance and good strength properties.

PVDF / Kynar® socket head cap screws have the characteristic stability of fluoropolymers when exposed to harsh chemical and ultraviolet environments but are much stronger mechanically than PTFE or PFA polymers.  PVDF socket head cap screws are also excel in high purity and low-permeability applications such as pharmaceutical and semi-conductor processing.

PVDF socket head cap screws are available in most metric and standard sizes. See our online store (top right) for common sizes or contact us for your specific requirements.

Screw Types: Flat Head Screws, Hex Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws

PVDF Socket Head Cap Screw Features and Benefits

When it comes to PVDF socket head cap screws, it’s all about clearance. These screws are the best choice for applications with limited installation access or clearance. Yet if you have an application with a lot of debris, you may want to select a PVDF hex head bolt or hex head cap screw, as they don’t have a socket drive which could get clogged.

Advantages:

• Ideal for applications with limited access as they require very little clearance around the fastener.
• Socket head cap screws can be used in locations where externally wrenched fasteners aren't desirable.
• Weight reduction on application as PVDF socket head cap screws are smaller – being that the cylindrical heads of socket screws need less space than hex heads and require no additional wrench space.
• Also known for safety, reliability and economy.

PVDF Mechanical  & Physical Properties

PVDF Chemcial Resistance Compared to Other Polymers

(MATERIAL) Socket Head Cap Screws

When it comes to (material) socket head cap screws, it’s all about clearance. These screws are the best choice for applications with limited installation access or clearance. Yet if you have an application with a lot of debris, you may want to select a (material) hex head bolt or hex head cap screw, as they don’t have a socket drive which could get clogged.

Advantages:

Ideal for applications with limited access as they require very little clearance around the fastener.

Socket head can be used in locations where externally wrenched fasteners aren't desirable.

Weight reduction on application as (material) socket head cap screws are smaller – being that the cylindrical heads of socket screws need less space than hex heads and require no additional wrench space.

Also known for safety, reliability and economy.

PVDF / Kynar Hex Head Cap Screws

Exceptional purity and chemical resistance with moderate strength

• High Purity and low extractables
• Chemically resistant to most common solvents including acids, salts, oils and steam
• Mechanical strength and toughness to 150°C (300°F)
• Resistance to ultraviolet, nuclear radiation, and standard sterilization methods
• Resistance to weathering and fungi
• Material datasheet for PVDF
• PVDF hex head cap screw features and benefits

PVDF hex head cap screws are made from a tough engineered fluoro-thermoplastic that offers a unique balance of excellent chemical resistance and good strength properties.

PVDF hex head cap screws have the characteristic stability of fluoropolymers when exposed to harsh chemical and ultraviolet environments but are much stronger mechanically than PTFE or PFA polymers.  PVDF screws / Kynar screws also excel in high purity and low-permeability applications such as pharmaceutical and semi-conductor processing.

PVDF hex head cap screws are available in most metric and standard sizes. See our online store (top right) for common sizes or contact us for your specific requirements.

Screw Types: Flat Head Screws, Hex Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws

PVDF Hex Head Cap Screw Features and Benefits

It is important to differentiate between a PVDF hex head cap screw and hex head bolt. Often people assume they are the same, but they are actually very different fasteners in terms of how they are manufactured, as well as from an application perspective. Regardless of your choice, PVDF hex heads offer strong, stable joints because of their large head service.

The Hex Comparison

PVDF Hex Head Cap Screw Advantages  

The most important feature of a PVDF hex head cap screws is that it has a larger bearing surface area which provide better clamping pressure than other type of fastener such as a socket head cap screw. Additionally, since debris build up is less of an issue with this style of fastener verses a socket head cap screw, they are ideal of dirty applications where particles could clog up a socket. Though PVDF socket heads are typically used for tight access applications, hex heads can be a better choice when there is only side clearance available for tightening. 

PVDF Mechanical  & Physical Properties

PVDF Chemcial Resistance Compared to Other Polymers

PVDF Flat Head Screws

Exceptional purity and chemical resistance with moderate strength

• High Purity and low extractables
• Chemically resistant to most common solvents including acids, salts, oils and steam
• Mechanical strength and toughness to 150°C (300°F)
• Resistance to ultraviolet, nuclear radiation, and standard sterilization methods
• Resistance to weathering and fungi
• Material datasheet for PVDF
• PVDF flat head screw features and benefits

PVDF / Kynar® flat head screws are made from a tough engineered fluoro-thermoplastic that offers a unique balance of excellent chemical resistance and good strength properties.

PVDF flat head screws have the characteristic stability of fluoropolymers when exposed to harsh chemical and ultraviolet environments but are much stronger mechanically than PTFE or PFA polymers.  PVDF screws also excel in high purity and low-permeability applications such as pharmaceutical and semi-conductor processing.

PVDF flat head screws are available in most metric and standard sizes. See our online store (top right) for common sizes or contact us for your specific requirements.

Screw Types: Flat Head Screws, Hex Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws

PVDF Flat Head Screw Features and Benefits

PVDF flat head screws are characterized by having a head with a top flat surface (which can feature either a slotted, phillips or allen driver) and bottom that is cone shaped or countersunk. With this design, the head of the screw can align flush or below the surrounding surface having obvious benefits.

PVDF Slotted vs. Phillips Driver 

Countersink Angle

For most flat head screw designs the angle of countersink is usually 82° for UNC and UNF applications however other angles ranging from 60° -120° could be specified. 

PVDF Mechanical  & Physical Properties

PVDF Chemcial Resistance Compared to Other Polymers

PVDF / Kynar Pan Head Screws

Exceptional purity and chemical resistance with moderate strength

• High Purity and low extractables
• Chemically resistant to most common solvents including acids, salts, oils and steam
• Mechanical strength and toughness to 150°C (300°F)
• Resistance to ultraviolet, nuclear radiation, and standard sterilization methods
• Resistance to weathering and fungi
• Material datasheet for PVDF
• PVDF pan head screw features and benefits

PVDF / Kynar® pan head screws are made from a tough engineered fluoro-thermoplastic that offers a unique balance of excellent chemical resistance and good strength properties.

PVDF screws / Kynar screws have the characteristic stability of fluoropolymers when exposed to harsh chemical and ultraviolet environments but are much stronger mechanically than PTFE or PFA polymers.  PVDF pan head screws also excel in high purity and low-permeability applications such as pharmaceutical and semi-conductor processing.

PVDF pan head screws are available in most metric and standard sizes. See our online store (top right) for common sizes or contact us for your specific requirements.

Screw Types: Flat Head Screws, Hex Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws

PVDF Pan Head Screw Features and Benefits

Pan head screws are flat on top and rounded on the sides. PVDF pan head screws are ideal for:

• Small diameter fasteners – especially when the fastener size needed is too small for a wrench.
• When phillips or slotted drivers are desired. For many high strength specialty alloys, only slotted drives are available.
• Low torque applications because the drivers don’t offer as much force as a wrench.
• Large diameter head provides more clamping area.

How Are They Different from Button Head Screws?
PVDF pan head and button head screws have very similar profiles however, button head screws allow for a hex socket driver whereas pan head screws do not.

PVDF Mechanical  & Physical Properties

PVDF Chemcial Resistance Compared to Other Polymers