Washer made of HDPE with retaining lips

Product specification The retaining lips serve for safe pre-assembly of screws and nuts with... more

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Product specification

The retaining lips serve for safe pre-assembly of screws and nuts with no risk of loss.

This facilitates considerably the pre-assembly at difficult accessible locations and thus allows saving of time.

Technical specification

Material: HDPE (polyethylene, rigid, high density)

Colour: natural

General Information Excellent impact resistance, even at low temperatures Good resistance to... more

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General Information

Excellent impact resistance, even at low temperatures

Good resistance to weather and aging

Antiadhesive, waxy and soft surface

High tearing strength

Physiologically safe

Good dielectrical properties

Chemical features:

Good resistance to weak and strong alkalis and acids, except oxidizing acids, and only relatively suitable for hydrofluoric acid; resistant to organic acids, aliphatic hydrocarbons, greases and mineral oils, alkohols, ketones, esters and amines.

Material specification:

Very low tendency to swell when in contact with polar fluids (e.g. alkohols, organic acids, esters, ketones etc.) as well as greases, oils and waxes.

Resistance to weather: the material degrades when exposed to direct sunlight

Material: HDPE (polyethylene, rigid, high density)

Density: 0.95 g/cm³

Temperature range: -50 to +85 °C, for a short time +100 °C

Elastic modulus: 700 - 1,400 N/mm²

Tensile strength: 18 - 35 N/mm²

Tearing strength: 25 - 32 MPa (DIN 53455)

Elongation at break: 100 - 1,000 % (DIN 53455)

Ball pressure hardness: 35 - 55 N/mm² (DIN 53456)

Impact resistance:

+20 °C: without break (DIN 53453);

-40 °C: approx. 350 kJ/m² (DIN 53448)

Surface resistance: 10¹⁴ Ohm (DIN 53482)

Volume resistivity: >10¹⁷ Ohm x cm (DIN 53482)

Dielectric strength: 65 - 70 kV/mm at 0.4 mm thickness

Dielectric constant: approx. 2.4 at 50 Hz

Water absorption: <0.1 % (ISO 62)

Flammability rating: UL 94 HB

Item	For thread	d mm	D mm	h mm	Einheit Stück	Price Euro*
308890	M3	3,2	6	2,5	50	28.00
308891	M3	3,2	6	2,5	100	48.00
308892	M4	4,3	8	2,5	50	28.00
308893	M4	4,3	8	2,5	100	48.00
308894	M5	5,3	10	2,5	50	28.00
308895	M5	5,3	10	2,5	100	48.00
308896	M6	6,4	12,5	2,5	50	30.00
308897	M6	6,4	12,5	2,5	100	52.00
308898	M8	8,4	17	2,5	50	33.00
308899	M8	8,4	17	2,5	100	56.00
308900	M10	10,5	21	2,5	50	35.00
308901	M10	10,5	21	2,5	100	60.00
308902	M10	10,5	30	2,5	50	41.00
308903	M10	10,5	30	2,5	100	71.00