Slotted Countersunk Head Screw (DIN 963) made of PTFE

Slotted Countersunk Head Screw (DIN 963) made of PTFE

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

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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

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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

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.

Good electrical properties.

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).

Machinable but bondable only after pretreatment.

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	External thread	L mm	D mm	h mm	Einheit Stück	Price Euro*
310128	M4 x 0,7	30	8,4	2,5	1	32.00
310129	M4 x 0,7	30	8,4	2,5	5	138.00
310140	M5 x 0,8	30	9,3	2,5	1	36.00
310141	M5 x 0,8	30	9,3	2,5	5	154.00
310142	M6 x 1	30	11,3	2,5	1	38.00
310143	M6 x 1	30	11,3	2,5	5	158.00
310148	M8 x 1,25	40	15,8	2,5	1	39.00
310149	M8 x 1,25	40	15,8	2,5	5	160.00
310150	M10 x 1,5	40	18,3	2,5	1	40.00
310151	M10 x 1,5	40	18,3	2,5	5	162.00