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Metric Finishing Washer made of PA for Countersunk Head Screws - rectangular cross-section and retaining lips

Product specification With retaining lips for safe pre-assembly of screws. Developed for... more

Product specification

With retaining lips for safe pre-assembly of screws.

Developed for mounting of countersunk head screws

Protect sensitive materials, such as lacquer, enamel, glass, textiles, ceramics

Outstandingly suited for furniture industry, car body and apparatus construction, yacht construction

Technical specification

Material: PA 6.6 (polyamide 66)

Colour: black or white

General Information Good coefficient of sliding friction High mechanical stability and... more

General Information

Good coefficient of sliding friction

High mechanical stability and fatigue strength

Excellent resilience

Impact resistant

Resistant to abrasion

Resistant to cold

Chemical features:

Good resistance to weak alkalis, but only moderate resistance to strong alkalis; resistant to aromatic and aliphatic hydrocarbons, fuels, mineral oils and mineral lubricants; suitable for alkohols, esters, ketones, ethers and amines.

Material specification:

The polyamides are universal materials for mechanical functional parts

The temperature resistance of polyamide (from -30 to +100 °C, for a short time +120 °C) allows use in many industries

Connecting parts made of polyamide and similar plastics protect from rust and corrosion damage

Insulating properties and an amazingly high tensile strength

PA can also be used in the food processing industry and in medical fields

Resistant to corrosion and abrasion

Non-toxic and unmagnetic

Vibration-damping

PA 6.6 features the same chemical resistance as PA 6

PA 6.6 has a higher hardness, abrasion resistance, and a little higher operating temperature than PA 6

However, PA 6.6 is a little less impact resistant compared to PA 6

Material: PA 6.6 (polyamide 6.6)

Colour: natural

Density: 1.14 g/cm3 (DIN 53479)

Temperature range: -30 to +100 °C

Melting temperature: +255 °C (DIN 53736)

Yield stress: 83 N/mm2 (ISO 527)

Elongation at break: 30 % (DIN 53455)

Bending strength: 115 N/mm2 (DIN 53452)

Elastic modulus: 3,000 N/mm2 (DIN 53457)

Impact resistance (Charpy): without break (DIN 53453)

Notch impact strength (Izod): 60 J/m (ASTM D 256)

Coefficient of sliding friction against steel (dry): 0.35 - 0.42

Dielectric loss factor (at 1 MHz): 0.025 (DIN 53483)

Volume resistivity: 1015 Ohm x cm (DIN 53482)

Surface resistance: approx. 1014 Ohm (DIN 53482)

Comparative track. index (CTI): >600 V (IEC 112)

Dielectric strength: approx. 40 kV/mm (DIN 53481)

Water absorption (saturation): approx. 8.5 % (DIN 53495)

Moisture absorption (s.c.a.-saturation): approx. 2.9 % (DIN 53714)

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309052
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309053
M3 3,2 6 8,4 2,2 90 weiß 100 38.00
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309055
M3 3,2 6 8,4 2,2 90 schwarz 100 38.00
309056
M4 4,3 8 10,5 2,8 90 weiß 50 22.00
309057
M4 4,3 8 10,5 2,8 90 weiß 100 38.00
309058
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309059
M4 4,3 8 10,5 2,8 90 schwarz 100 38.00
309060
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309061
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309062
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309063
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309064
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309065
M6 6,2 11,5 15 4,1 90 weiß 100 46.00
309066
M6 6,2 11,5 15 4,1 90 schwarz 50 26.00
309067
M6 6,2 11,5 15 4,1 90 schwarz 100 46.00
309068
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309069
M8 8,2 16 20 5 90 weiß 100 48.00
309070
M8 8,2 16 20 5 90 schwarz 50 28.00
309071
M8 8,2 16 20 5 90 schwarz 100 48.00
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