Roofing and Cladding screws and accessories

Teepee Products Ltd                                        Telephone 0118 9757776

A leading manufacturer of the nylon Bi-hex cladding screw and home of the tek screw since 1994

www.claddingscrews.co.uk

BI-HEX NYLON HEAD SPECIFICATION

Complete encapsulation of a HWH screw head with a 11mm BI-HEX Nylon coloured head.

To give ultimate protection and a neat, aesthetically pleasing finish.

MECHANICAL PROPERTIES

The following results were for Teepee Products 5/16″ HWH screws with a 10.5mm flange diameter moulded over in Reading, Berkshire by Teepee Product during February 2018. Ambient average temperature 17°C to 18°C

Test samples were randomly selected from various production runs.

Please note: Tortional strength tests are carried out at regular intervals as part of our quality control procedure.

Note: Figures are average test results and are ultimate failure loads. No safety factors have been taken into account.

Results obtained using a TW12 torque meter manufactured to ISO 6789 1992 calibration cert. no. 894004-01185 with accurate reading range 2Nm to 13.5Nm (20% to 100% of maximum torque values)

TORSIONAL STRENGTH  9.3Nm 

Minimum test result 8.6Nm

MATERIAL SPECIFICATION

UV STABALISED POLYAMID 6 PA PRIM GF15/IM

Mechanical properties

TENSILE STRENGTH
90 N/mm2
DIN 53455   ISO 527
TENSILE ELONGATION
5.5%
DIN 53455   ISO 527
TENSILE MODULUS
4750 N/mm2
DIN 53455   ISO 527
CHARPY NOTCHED IMPACT
7.5 kJ/M2
DIN 53453   ISO 179
CHARPY UNNOTCHED IMPACT
35 kJ/M2
DIN 53453   ISO 179

Thermal properties

MELTING POINT
 217-220 °C
HEAT DISTORTION TEMPERATURE 
METHOD A/120)
174 °C
DIN 53481   ISO 75
VISCAT SOFTENING POINT 
(METHOD B/120)
>200 °C
DIN 53460   ISO 308

Other properties

GLASS FIBRE
15% ± 2%
DENSITY
1.2 g/cm3
DIN 53479   ISO 1183