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Phillips #4 screws

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Solid Lifters

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Joined
Jul 21, 2010
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2,423
Location
Inland Empire, SoCal
I have a Mac P4 screwdriver, and a HF P4 socket driver in my box. Got me thinking, don't think I've ever seen a Phillips #4 screw... :headscrat

Where do you guys see Phillips #4 screws?

Never. Not once have I come across one, yet the driver for them cost me $28.

Dirt bikes have a lot of them, so I've been told. Same with ATVs.
 

balane

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May 4, 2011
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2,996
Location
Pacific Northwest
I think some of the old slide off rotors and drums had #4 Phillips which held them in place during the assembly line. The only time I've used a #4 is with my impact driver to get off rusty, firmly in place fasteners.

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Buckgnarly

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Oct 8, 2010
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VT
Old CJ windshield hinge from my buddy....what a rusted PITA that was.....
 

chevy_cowboy

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May 12, 2011
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Location
Southern Illinois
Quite a few on international trucks, but we've gotten into the habit of replacing them with hex head stuff anytime we get a chance.

Also as someone mentioned, dirtbikes. Usually seats and trim panels are held on with P4's
 

malibu101

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Jul 1, 2005
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Location
Walnutport PA
Great timing to read this as today I had to repair a piece of lab equipment and one of the pieces was held down with 3/8-16 flat head machine bolts. Those bolts had a #4 phillips.
I have stumbled across them before but it has been very seldom for me.
 
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plinker

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Feb 28, 2007
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4,286
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Northern Wi
I have used a #4 bit socket once, dont remember on what.

Japanese ATV's & vehicles use alot of Phillips head hardware from what I've experianced.
 

melliott28

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Jul 26, 2010
Messages
181
Location
Plano, TX
Great timing on this thread. Sears has the P4 Craftsman Profession screwdriver on sale for $8.88 and I was trying to find a reason to buy it. I have never had a situation that called for a P4 screwdriver, but for the sale price, I was trying to come up with a reason for buying one. Haven't found a reason yet; the door latches on both my cars use P3 screws, on my wife's car they are torx, I don't do any work on dirtbikes, ATV's, or aircraft. Come on guys, what are some other things that use P4 screws?
 

Charles (in GA)

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Jan 11, 2006
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12,489
Location
50 mi south of Atlanta
All over commercial aviation aircraft

Yep. With stuff this large, you don't need or want a regular screwdriver style tool, its best to have a 1/4 or 5/16 hex drive Apex bit, so you can drive it with a handle (such as a SO ratcheting screwdriver) OR a 1/4 drive ratchet, speed handle, etc.

Charles
 

JASTECH

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Oct 21, 2009
Messages
2,671
Location
Gering, NE
Door latches as mentioned above, seat belt anchores and some of our farm equipment.

Thanks, JASTECH
 

otis66

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May 28, 2010
Messages
1,875
I used a No 4 to remove the Access floor when replacing the Alt on a MCI-MC9 Motor Coach.
 
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