Thread Cutting Machine Screws

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Content Lineup Wood ScrewsPhillips flat headFrearson flat headSlotted flat headSlotted oval headPhillips round headSlotted round headSquare flathead w/ nibs, type 17Sheet metal screwsDeck screws & Timber screwsMachine ScrewsUnitsUSMachine screwsMachine screwsSEMS machine screwsType F machine screwsMetric machine screwsSocket screwsMetricThread Cutting Machine ScrewsSheet Metal ScrewsSelf Drilling SMSHex BoltsCarriage BoltsLag BoltsFlange BoltsSocket ScrewsEye BoltsEye LagsU-BoltsJ-BoltsShoulder BoltsElevator BoltsSex BoltsMating ScrewsHanger BoltsSet Screws Head Styles FlatOvalPanTrussRoundHexHex WasherSlotted Hex WasherSocket CapButton Drive Types PhillipsFrearsonSlottedCombinationSocket, Hex, or AllenOne WaySquareStar Nut Types HexNylon Insert LockJamNylon Insert Jam LockWingCapAcornFlangeTeeSquarePrevailing torque lockK-Lock or Kep2-Way Reversible LockCouplingSlottedCastle Washer Types FlatFenderFinishingSplit LockExternal Tooth LockInternal Tooth LockSquareDockOgeeSealing Fastener Categories Fastener Categories (Continued) Head Styles Drive Types Washer Types Nut Types Anchoring Products Wood Screws Wood screws have large threads for use in wood. Wood screws 1. Phillips flat head Important Note: Wood screws can be manufactured with a cut thread or a rolled thread. While the thread diameter is uniform to both manufacturing processes, the shank diameter can vary. Flat heads are countersunk (cone shaped under the head) with a flat top. Phillips drive is x-shaped for installation with a phillips screw driver. Material Stainless steel 18-8A corrosion-resistant steel alloy. The most common stainless steel for general hardware use.Stainless steel 316A highly corrosion-resistant grade of stainless steel. Ideal in saltwater and chlorine environments.Zinc-plated steelLow carbon steel for general use. Zinc plated for moderate corrosion resistance.BrassSolid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. The exact color varies. 2. Frearson flat head Important Note: Wood screws can be manufactured with a cut thread or a rolled thread. While the thread diameter is uniform to both manufacturing processes, the shank diameter can vary. Note: These screws are not compatible with Phillips drivers/bits. Flatheads are countersunk (cone-shaped under the head) with a flat top. Frearson's drive is x-shaped, similar to (but not compatible with) Phillips. Material Silicon bronzeSolid bronze. An alloy of copper with greater strength and corrosion resistance than brass. The exact color varies. 3. Slotted flat head Flat heads are countersunk (cone shaped under the head) with a flat top. Slotted drive has a simple slot for a flat bladed screw driver. Important Note: Wood screws can be manufactured with a cut thread or a rolled thread. While the thread diameter is uniform to both manufacturing processes, the shank diameter can vary. Material Stainless steel 18-8A corrosion-resistant steel alloy. The most common stainless steel for general hardware use.Zinc-plated steelLow carbon steel for general use. Zinc plated for moderate corrosion resistance.BrassSolid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. The exact color varies.Silicon bronzeSolid bronze. An alloy of copper with greater strength and corrosion resistance than brass. The exact color varies. 4. Slotted oval head Important Note: Wood screws can be manufactured with a cut thread or a rolled thread. While the thread diameter is uniform to both manufacturing processes, the shank diameter can vary. Oval heads are countersunk (cone shaped under the head) with a rounded top. Slotted drive has a simple slot for a flat bladed screw driver. Material Stainless steel 18-8A corrosion-resistant steel alloy. The most common stainless steel for general hardware use.BrassSolid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. The exact color varies.Silicon bronzeSolid bronze. An alloy of copper with greater strength and corrosion resistance than brass. The exact color varies. 5. Phillips round head Important Note: Wood screws can be manufactured with a cut thread or a rolled thread. While the thread diameter is uniform to both manufacturing processes, the shank diameter can vary. Round heads are domed and look like half of a sphere. Phillips drive is x-shaped for installation with a phillips screw driver. Material Zinc-plated steelLow carbon steel for general use. Zinc plated for moderate corrosion resistance.BrassSolid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. The exact color varies. 6. Slotted round head Important Note: Wood screws can be manufactured with a cut thread or a rolled thread. While the thread diameter is uniform to both manufacturing processes, the shank diameter can vary. Round heads are domed and look like half of a sphere. Slotted drive has a simple slot for a flat bladed screw driver. Material Stainless steel 18-8A corrosion-resistant steel alloy. The most common stainless steel for general hardware use.Zinc-plated steelLow carbon steel for general use. Zinc plated for moderate corrosion resistance.BrassSolid brass. An alloy of primarily copper and zinc with good corrosion resistance. Used mostly in decorative and electrical applications. The exact color varies.Silicon bronzeSolid bronze. An alloy of copper with greater strength and corrosion resistance than brass. The exact color varies. 7. Square flat head w/ nibs, type 17 Important Note: Wood screws can be manufactured with a cut thread or a rolled thread. While the thread diameter is uniform to both manufacturing processes, the shank diameter can vary. Type 17 screws have an auger point. Countersinking nibs aid in material removal. Flatheads are countersunk (cone shaped under the head) with a flat top. Square drive is designed to reduce the risk of cam-out (stripping) and allow single-handed installation. Material Zinc-plated steelLow carbon steel for general use. Zinc plated for moderate corrosion resistance.Lubricated finish steelLow carbon steel for general use. Lubricated to ease installation. Machine screws Units *US 1. Phillips pan head Pan heads are slightly rounded with short vertical sides. Phillips drive is x-shaped for installation with a phillips screw driver. Material Stainless steel 18-8A corrosion-resistant steel alloy. The most common stainless steel for general hardware use.Stainless steel 18-8 black oxide finishA corrosion-resistant steel alloy. The most common stainless steel for general hardware use. A chemically produced coating that leaves the steel surface with a matte black finish and offers mild corrosion resistance.Stainless steel 316A highly corrosion-resistant grade of stainless steel. Ideal in saltwater and chlorine environments.Zinc-plated steelLow carbon steel for general use. Zinc plated for moderate corrosion resistance. 2. Star drive pan head Pan heads are slightly rounded with short vertical sides. Star drive is a Torx compatible drive, designed to minimize the risk of cam-out (stripping). Material Stainless steel 18-8A corrosion-resistant steel alloy. The most common stainless steel for general hardware use. 3. Spanner pan head Pan heads are slightly rounded with short vertical sides. Spanner (a.k.a. snake eyes) is a tamper resistant drive that requires a special driver to install. Material Stainless steel 18-8A corrosion-resistant steel alloy. The most common stainless steel for general hardware use. 4. Phillips flat head Flat heads are countersunk (cone shaped under the head) with a flat top. Phillips drive is x-shaped for installation with a phillips screw driver. Material Stainless steel 18-8A corrosion-resistant steel alloy. The most common stainless steel for general hardware use.Stainless steel 18-8 black oxide finishA corrosion-resistant steel alloy. The most common stainless steel for general hardware use. A chemically produced coating that leaves the steel surface with a matte black finish and offers mild corrosion resistance.Stainless steel 316A highly corrosion-resistant grade of stainless steel. Ideal in saltwater and chlorine environments.Zinc-plated steelLow carbon steel for general use. Zinc plated for moderate corrosion resistance. *Metric 1. Phillips pan head Pan's heads are slightly rounded with short vertical sides. Phillips drive is x-shaped for installation with a Phillips screwdriver. Stainless steel 18-8 (A-2) Also known as A-2 stainless, 18-8 is the most common grade of stainless steel for general use. Stainless steel 316 (A-4) Also known as A-4 stainless, 316 is a highly corrosion-resistant grade of stainless steel. Ideal in saltwater and chlorine environments. Zinc-plated steelLow carbon steel for general use. Zinc plated for moderate corrosion resistance. Nylon 6/6 General-purpose nylon is often used in fasteners for corrosion resistance. We look forward to continuing to update this article, so please bookmark this article. READ: Rivets – Types, Failures Of Riveted Joint, Terms Used In Riveting Visit Forum Visit Our Friendly Website

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