Black Steel Truss Head Self Tapping Screws Mushroom 4.2 mm Harden Fasteners

Truss head self tapping screw , sharp point with black oxide finishing , harden material and self locking performance .

Features

1 , Harden material

Core hardness over HV350

2 , Quick secure performance

Sharp point and blade thread ensure drilling speed as fast as much  .

3 , No burrs 

4 , Easy to be installed

Strict dimension and standard PH drive .

Note : all dimensions are millimeters

                                             Truss head self tapping screws sharp point

Truss head self tapping screws with self tapping threads which used to lock metal or wooden parts , operated in a electric drill or by hand . There are several tips for installation

◎ Make sure screws are straight into material when you are ready to drive .

◎ Do not put much force on screws at the beginning

◎ Pre-drill a hole that is 1/3 length of sharp point before installation

◎ Screwdriver bit specification must to be suitable for drive on screws

◎ Do not strike screw in hammer or other tool without screwing operation

We can provide more drives for screws for convenient operations .

Phillips ( PH ) SLOT PH / SLOT TORX POZI

SLOT / POZI SQUARE PH / SQUARE TRIANGLE DOUBLE V

Y SOCKET TRI-WING H SOCKET HEX SCOKET S SOCKET

SPANNER CLUTCH PH IND SLOT IND TORX IND