Screws

Screw Dimensions

Screw Size Screw Diameter Screw Head Dimension
Minimum Maximum Panhead Flat/Oval Truss
4 .110 .114 .205 - .219 .195 - .225 .241 - .257
6 .135 .116 .256 - .270 .244 - .279 .303 - .321
7 .151 .158 .291 - .296 .268 - .305 -------
8 .161 .168 .306 - .322 .292 - .332 .364 - .384
10 .188 .194 .357 - .374 .340 - .385 .425 - .448

Screw Head Types

Pan Head
Panhead

Truss Head
Trusshead

Flat Head
Flathead

Oval Head
Ovalhead


Hex Washer Head
Hexwasherhead

Hex Head
Hexhead

PH Flat Undercut Head
Phflatundercuthead

Screw Thread Types

Thread_types Type A Type B Pilot Point Type AB TEK Point Type F ROLOK Type 25

Vinyl-Grip Screws

For a screw to really hold in vinyl, it is essential that it has the 10° trailing angle of our Vinyl-Grip series. A 35° thread-leading edge is also necessary to form the "wedging pressure" that provides maximum hold and minimum pull-out, even with continued vibration and movement.

10° trailing angle 35° thread angle Vinyl_grip_screws Vinyl_grip_screw_detail

"Wedging-pressure" is formed by the initial "bite" of the thread angle, the relatively greater amount of material gripping area, now pressed tightly against the 10° trailing edge of the thread forming an actual wedge that jams the screw-shaft into the vinyl with greater rigidity.

Jamb Adjusters

Jamb Adjusters consist of an oversized Phillips screw and a plastic insert bushing. The bushing is inserted into the jamb and the screw is threaded into the bushing. The screw can then be adjusted from inside the window to align the jamb for a perfect fit during installation.


Jamb_adjuster

Tamperproof Screw Heads

Tamperproof screws and corresponding bits available.
Types not shown also available upon request.


Tamperproof