Self-Tapping Screws

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SELF-TAPPING SCREWS Self Tapping Screws Blunt Point

Gimlet point self-tapping screws have various references depending on the standard. BS 4174 referred to as Type AB DIN 7970 referred to as Type B ISO 1478 referred to as Type C

Blunt point self-tapping screws have various references depending on the standard. BS 4174 referred to as Type B DIN 7970 referred to as Type BZ ISO 1478 referred to as Type F

* Max countersunk head diameters are theoretical diameters of head to sharp corners and are the diameter to which holes should be countersunk to enable the screwheads to fit flush with the surface.

ROLLED THREAD MACHINE SCREWS

Manufacturing Standards for Head Tolerances

DIN 7500 THREAD ROLLING SCREWS

Self-Tapping Screws

Self Tapping Screws Gimlet Point

DIN 7504 SELF-DRILLING SCREWS

TECHNICAL DATA 1

FASTENERS FOR SHEET METAL

SCREWS FOR PLASTIC

Tolerances to BS 4174

CD WELD STUDS

Tolerances to DIN 267

Tel Fax

+ 44 (0) 1524 389232 + 44 (0) 1524 66367

Web www.lancasterfastener.co.uk Email [email protected]

163

TECHNICAL DATA

Tolerances to ISO 4759/1

BRASS INSERTS FOR PLASTIC

DEPTH REF

SELF-TAPPING SCREWS

TECHNICAL DATA 1 DIN 7504 SELF-DRILLING SCREWS

Self-Tapping Screws

Self Tapping Screws Gimlet Point

Self Tapping Screws Blunt Point

Gimlet point self-tapping screws have various references depending on the standard. BS 4174 referred to as Type AB DIN 7970 referred to as Type B ISO 1478 referred to as Type C

Blunt point self-tapping screws have various references depending on the standard. BS 4174 referred to as Type B DIN 7970 referred to as Type BZ ISO 1478 referred to as Type F

DIN 7500 THREAD ROLLING SCREWS

Manufacturing Standards for Thread, Length Tolerances and Mechanical Properties

ROLLED THREAD MACHINE SCREWS SCREWS FOR PLASTIC FASTENERS FOR SHEET METAL CD WELD STUDS

Dimensions in Millimetres

BRASS INSERTS FOR PLASTIC TECHNICAL DATA

164

Tel Fax

+ 44 (0) 1524 389232 + 44 (0) 1524 66367

Web www.lancasterfastener.co.uk Email [email protected]

SELF-TAPPING SCREWS Due to the variety of the hardness of metals and the different operating conditions, it may be found necessary to vary these dimensions which should be used only as a guide.

Tel Fax

+ 44 (0) 1524 389232 + 44 (0) 1524 66367

Web www.lancasterfastener.co.uk Email [email protected]

165

TECHNICAL DATA

BRASS INSERTS FOR PLASTIC

CD WELD STUDS

FASTENERS FOR SHEET METAL

SCREWS FOR PLASTIC

ROLLED THREAD MACHINE SCREWS

Recommended Hole Sizes

DIN 7500 THREAD ROLLING SCREWS

Self-Tapping Screws

DIN 7504 SELF-DRILLING SCREWS

TECHNICAL DATA 1

SELF-TAPPING SCREWS

TECHNICAL DATA 2 DIN 7504 SELF-DRILLING SCREWS

Type U Hammer Drive Screws

Manufacturing Standard BS4174

DIN 7500 THREAD ROLLING SCREWS

Head, Thread and Length Tolerances

ROLLED THREAD MACHINE SCREWS Dimensions in Inches

SCREWS FOR PLASTIC FASTENERS FOR SHEET METAL

Dimensions in Millimetres

CD WELD STUDS BRASS INSERTS FOR PLASTIC TECHNICAL DATA

166

Tel Fax

+ 44 (0) 1524 389232 + 44 (0) 1524 66367

Web www.lancasterfastener.co.uk Email [email protected]