Hi Screwdrivers Flat Slot
These are a basic item to have in assorted sizes, not as popular as they once were but still necessary. It is very important that the bit be the right size for the slot in the screw otherwise it will probably slip and strip the edges of the slot making the screw nearly impossible to work with. The bit must be kept in good condition by grinding or filling it square as they tend to wear at the outside corners. When purchasing screws for projects be advised to use Phillips or Robertson style screws. Phillips At least the three sizes, #1, #2, and #3 should be in your tool box. This type of screw will sit on the end of the driver as it is started and is less likely to slip as it is being driven. Robertson Often referred to as socket head screws, they have been very popular in Canada for years and are becoming more readily available in the U.S.A. The drivers are differentiated by the colours of their handles. Green, red and black are the three most popular. They have all the advantages of Philips plus the fact that they usually will stay on the driver even when pointing downhill. Screws Pilot Holes There are two basic reasons for drilling pilot holes (1) a tight fit, and (2) material does not split. The pilot hole in the top piece should allow for a snug fit of the screw shank, and allow the threads on the screw to get a good grip without stripping in the bottom piece. Pilot holes can be drilled with special bits that are made for different size diameter and length of screws and will also countersink the head of the screw. NOTE: Brass screws are very soft and will tend to break, even with pilot holes, before they are driven all the way, to prevent this drive a steel screw the same size and with the same thread pattern first to cut threads in the wood, remove it and drive brass screw. Shank & Pilot Hole Guide Screw Size # Shank Hole Pilot Soft Wood Pilot Hard Wood # 4 7/64" 3/64" 1/16" # 6 9/64" 1/16" 5/64" # 8 11/64" 5/64" 3/32" # 10 3/16" 3/32" 7/64" # 12 7/32" 7/64" 1/8" Screw Heads Screws come with many different styles of heads, the three most common are flat, round and pan. Flat These are probably the most common, they are countersunk so they don't protrude above the surface so can be filled and painted over and become invisible. This type of head is used in butt hinges. The heads have an included angle of 82°. Round These are used when a countersunk head is not required. Pan These are similar to round head except the top of the head is flat, self-threading metal screws are a good example. Sizes Screw sizes are listed with the shank size first then the length. Shank sizes are denoted by #'s, the larger the number the larger the shank, the most common sizes are #6, #8 and #10 so a medium size screw 1 1/2" long would be listed as: #8 X 1 1/2". Use this Screw Comparison Chart to help choose the right screw that best fits your application. Compare Screw Heads, Screw Threads and size for either Interior or Exterior applications. screw-guide/50168-120 Lube Finished Screws Application: Great for most standard interior applications. Choose from either Square Drive or Square-X Screws. Lube finish reduces friction for easier installation. Head: Flat Head Thread: Deep Thread Size: #6, #8, #10 Woodmaster Interior Lube Finish Screws Application: Great for most standard interior applications Special point acts like a saw blade thru wood. Thread design reduces splitting and driving torque. Head: Flat Head Thread: Serrated Deep Thread Size: #8, #10 Trim Head Square Drive Application: Trim Molding Finishing nail look with the power of a screw. Head: Small 3/16" Trim Head Thread: Deep Thread Size: #6 Slide Mounting Screws Application: Ball bearing slides and catches, drawer slides, shelf supports Low profile head won't interfere with guide operation. Strong holding power. Head: Truss Head Thread: Deep Thread Size: #6 Truss Head Break Away Application: Knobs and Pulls Breaks away in 1/4''. Great where length of screw is not pre-determined. Head: Truss Head Thread: Machine Thread Size: #8 Drawer Pull Screws Application: Used for drawer knobs and pulls Holds knobs and pulls secure Head: Truss Head Thread: Machine Thread Size: #8 Woodmaster Round Washer Head Screws Application: Corner block, top out and cabinet installation Large bearing surface to help prevent overdriving Head: Washer Head Thread: Serrated Deep Thread Size: #8 Large Round Washer Head Screws Application: Drawer front adjustments Washer head covers adjusting hole once drawer front is adjusted Head: Large Washer Head Thread: Deep Thread Size: #8 Painted Head Screws Application: Hanging Cabinets White melamine, painted plywood or natural woods Head: Truss Head Thread: Deep Thread Size: #10 screw-guide/30321-120 Solid Brass Screws Application: Decorative complement to solid brass hardware Polished and lacquered to prevent tarnish. Decorative. Head: Round Head, Flat Head Thread: Various Size: #0, #1, #2, #3, #4, #5, #6 Back to Top Sure Drive Composite Deck Screws Sure Drive Composite Deck Screws Application: Composite decking material. Less mushrooming in composite decking. Head: Flat Undercut Head Thread: Dual thread design for optimum holding power. Size: #10 Bugle Head Stainless Steel Screws Application: Pressure-treated decks, siding, spas, barns, metal buildings, bridges, gazebos. Corrosion resistant. Auger point for extra fast start. Head: Bugle head with flat head Thread: Coarse thread Size: #8, #10 Trim Head Stainless Steel Square Drive Screws Application: Cedar decks, seaside applications Small heads are perfect for low profile. Corrosion resistant. Head: Trim Head Thread: Coarse Thread Size: #7 Woodmaster Exterior Screws Application: Decks, outdoor furniture Durable Ultra Seal finish for tough exterior conditions. Rated 500 hrs of salt spray protection. Not recommended for ACQ pressure treated lumber. Head: Flat Head Thread: Serrated Deep Thread Size: #8, #10 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday The Pod Cast address for the Cooking In The Dark Show is. http://www.gcast.com/u/cookingindark/main.xml Visit The Blind Handy Man Files Page To Review Contributions From Various List Members At The Following address: http://www.jaws-users.com/handyman/ Visit the new archives page at the following address http://www.mail-archive.com/[email protected]/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! 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