Hello basstrix,
The four screws used to hold the 18842 radio bezel are #8-18 X 3/4". Ford called these Self-tapping, oval head, cross recessed, pointed screws. The Ford part # is 55934-S, but unfortunately was discontinued years ago. AMK does have a version of these screws but has a $30.00 minimum order with a $10.00 shipping charge. Too much $$$ unless you need other hardware. Their part number for the 18842 bezel screw kit is F-1093, and is available at vendors such as NPD (National Parts Depot)
If this is something you need now or don't want to order, a trip to your local hardware store, Home Depot, or Lowes could be quicker and possibly cheaper.
Buy part #18842-2AK MOUNTING KIT, RADIO AND HEATER BEZEL for your classic vehicle from National Parts Depot. Free shipping on orders over $300, fast delivery & everyday low pricing! Order now!
www.npdlink.com
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