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

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

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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

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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)

Item	For thread	d mm	d1 mm	D mm	h mm	d2 Grad	Farbe	Einheit Stück	Price Euro*
309052	M3	3,2	6	8,4	2,2	90	weiß	50	24.00
309053	M3	3,2	6	8,4	2,2	90	weiß	100	41.00
309054	M3	3,2	6	8,4	2,2	90	schwarz	50	24.00
309055	M3	3,2	6	8,4	2,2	90	schwarz	100	41.00
309056	M4	4,3	8	10,5	2,8	90	weiß	50	24.00
309057	M4	4,3	8	10,5	2,8	90	weiß	100	41.00
309058	M4	4,3	8	10,5	2,8	90	schwarz	50	24.00
309059	M4	4,3	8	10,5	2,8	90	schwarz	100	41.00
309060	M5	5,2	9,8	12,5	3,3	90	weiß	50	26.00
309061	M5	5,2	9,8	12,5	3,3	90	weiß	100	43.00
309062	M5	5,2	9,8	12,5	3,3	90	schwarz	50	26.00
309063	M5	5,2	9,8	12,5	3,3	90	schwarz	100	43.00
309064	M6	6,2	11,5	15	4,1	90	weiß	50	28.00
309065	M6	6,2	11,5	15	4,1	90	weiß	100	50.00
309066	M6	6,2	11,5	15	4,1	90	schwarz	50	28.00
309067	M6	6,2	11,5	15	4,1	90	schwarz	100	50.00
309068	M8	8,2	16	20	5	90	weiß	50	30.00
309069	M8	8,2	16	20	5	90	weiß	100	52.00
309070	M8	8,2	16	20	5	90	schwarz	50	30.00
309071	M8	8,2	16	20	5	90	schwarz	100	52.00