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Slotted Countersunk Head Screw (DIN 963) made of PTFE

Technical specification Material: PTFE (polytetrafluoroethylene) Colour: milky... more

Technical specification

Material: PTFE (polytetrafluoroethylene)

Colour: milky white

Regulations: similar to DIN 963, ISO 2009

General Information Fastening elements made of PTFE are ideally suitable for constructions... more

General Information

Fastening elements made of PTFE are ideally suitable for constructions under highest thermal and chemical load. Very good coefficient of sliding friction, therefore no sticking. Elements made of PTFE hardly get dirty due to their excellent antiadhesive properties.

Very good chemical resistance

Very high temperature resistance

Very good coefficient of sliding friction

Antiadhesive surface

Suitable for food contact applications

PTFE is extremely resistant to UV and weather, even under extreme climatic conditions

Chemical features:

Universal chemical resistance e.g. to fuming sulfuric and nitric acids, except to molten or dissolved alkali metals, elementary fluorine, perfluorokerosene, chlorinetrifluoride as well as other fluorine compounds that attack the material at high pressures and temperatures.

Material specification:

PTFE is a fluoroplast with excellent resistance to acids, alkalis, solvents and gases.

PTFE has good electrical properties.

PTFE is sterilizable and usable in a temperature range from -200 to +260 °C depending on the degree of mechanical load.

No embrittlement, even when in contact with boiling helium (-269 °C).

PTFE is machinable but bondable only after pretreatment.

PTFE is not resistant to fluorine compounds and molten alkali metals at higher temperatures.

Material: PTFE (polytetrafluoroethylene)

Colour: opaque white

Density: 2.14 - 2.19 g/cm3 (DIN 53479)

Temperature range: -200 to +260 °C, for a short time +280 °C

Melting point: +327 °C

Elastic modulus: 400 - 800 N/mm2 (DIN 53457)

Yield stress: 10 N/mm2 (DIN 53455)

Tearing strength: 29 - 39 N/mm2 (DIN 53456)

Elongation at break: 200 - 500 % (DIN 53455)

Notch impact strength: 16 kJ/m2 (DIN 53453)

Coefficient of sliding friction against steel (dry): approx. 0.18 - 0.23

Shore hardness D: 55° - 72° (DIN 53505)

Water absorption: <0.01 %

Volume resistivity: 1018 Ohm x cm (DIN 53482)

Surface resistance: 1017 Ohm (DIN 53482)

Dielectric constant: 2.1 at 50 Hz (DIN 53483)

Flammability rating: UL 94 V-0

Item Image External thread Thread length
mm
D
mm
h
mm
Unit
piece
Price
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310128
M4 x 0,7 30 8,4 2,5 1 24.00
310129
M4 x 0,7 30 8,4 2,5 5 105.00
310140
M5 x 0,8 30 9,3 2,5 1 24.00
310141
M5 x 0,8 30 9,3 2,5 5 105.00
310142
M6 x 1 30 11,3 2,5 1 26.00
310143
M6 x 1 30 11,3 2,5 5 117.00
310148
M8 x 1,25 40 15,8 2,5 1 27.00
310149
M8 x 1,25 40 15,8 2,5 5 120.00
310150
M10 x 1,5 40 18,3 2,5 1 29.00
310151
M10 x 1,5 40 18,3 2,5 5 130.00
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