What is this type of screw called?

[atikovi]

Dual diameter threads and Phillips head used in GM plastic parts like bumpers and grilles. Dealer wants over $3 each and I need a dozen for something that should cost 10 to 15 cents each. Part number 11609539. What are my options? Fastenal closed for the day.

 

[DHCrocks]

HI LO screw

 

[T45]

HI-LO SCREWS FOR PLASTIC MATERIALS
They appear to be a variant of thread-forming/self-tapping etc. made for plastic especially. some more info in the links below.


https://www.mutualscrew.com/media/refGuides/Sthilo.pdf
http://www.aspenfasteners.com/Screws-Hi-Lo-Self-Tapping-s/526.htm

 

[atikovi]

This forum has some knowledgeable people.

 

[John in OH]

It's called "Expensive"!

I've replace the occasional odd lost screw of this type with a simple sheet metal screw of same size with similar head and thread pitch.

 

[beamrider]

http://www.homedepot.com/p/The-Hill...ead-Phillips-Anchors-25-Pack-376246/202243039

You mean these?

 

[LXCam]

Try this place. I buy a lot of bulk from them

http://www.thefastenerwarehouse.com/page/page/584919.htm

 

[Wamsutta]

You could go to the salvage yard with a 1 quart zip lock bag and fill it up full of those screws and it would cost you about 5 dollars. People take the parts but then always leave the fasteners behind. Don't even try finding those HI/LOW plastic tapping screws at a hardware store or an auto parts store; they're not going to have them.

 

[atikovi]

I'll get some off my parts car this weekend, just thought I could get it done today. GM sure has some stupid parts pricing. A complex electronic headlight switch is just $30 while one simple screw is $3.