Screw groove type classification of the whole book, you know?

Screw groove type classification of the whole book, you know?

Straight Slot Screws

A straight slot screw is the most common type of screw, its shape is cylindrical in the thread on the opening of a straight groove, and its diameter is small, usually used for light load or fastening needs are not too high occasions. Its advantages are that it is easy to install and low cost; the disadvantage is that its fastening force is weak and easy to dislodge or lose phenomenon.

Metric 18-8 Stainless Steel Slotted Flat Head Screws： These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

Screws with a 100° countersink angle distribute pressure over a wide area to prevent crushing soft materials.

316 Stainless Steel Slotted Flat Head Screws： More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water. They’re passivated for added protection against oxidation and corrosion and may be mildly magnetic. Screws are angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

Screws with an undercut profile have a shallow head for use in thin materials.

Steel Slotted Flat Head Screws： A zinc plating provides mild corrosion resistance. These screws are angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

Screws with an undercut profile have a shallow head for use in thin materials.

Metric Brass Slotted Flat Head Screws： Brass screws are electrically conductive, nonmagnetic, and have good corrosion resistance. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

Aluminum Slotted Flat Head Screws： Aluminum screws are one-third the weight of steel and have good corrosion resistance. They’re angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

Screws with an undercut profile have a shallow head for use in thin materials.

Metric Stainless Steel Slotted Oval Head Screws： These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. They have a decorative, domed head that sits above the surface when installed, and they’re angled under the head so they can be countersunk in a hole. Their undercut profile gives them a shallow head for use in thin materials. Length is measured from the top of the slope.

Thumb-Screw-Head Captive Panel Screws： Install through a hole and thread on a retainer (sold separately) to keep these screws secure—no special tools are required. Use an optional spring (sold separately) to provide even compression against panels. Screws, retainers, and springs are made from chemical-resistant 18-8 stainless steel and may be mildly magnetic. Length is measured from under the head.

Rounded Head Captive Panel Screws： Install through a hole and thread on a retainer (sold separately) to keep these screws secure—no special tools are required. Use an optional spring (sold separately) to provide even compression against panels. Screws, retainers, and optional springs are made from chemical-resistant 18-8 stainless steel and may be mildly magnetic. Length is measured from under the head.

Cross recessed screws

Cross-recessed screws are an improved version of straight-recessed screws, with a cross-shaped slot that can be easily fastened with a standard screwdriver. This type of screw has more tightening force than straight slot screws and is not easy to loosen, but due to the difficulty of opening the slot, its production cost will be increased accordingly.

Mil. Spec. Stainless Steel Pan Head Phillips Screws： Choose these pan head screws for their adherence to strict military standards for material and construction. Made from 18-8 stainless steel, they are chemical resistant and may be mildly magnetic. Length is measured from under the head.

Passivated screws meet Fed. Spec. QQ-P-35 for added protection against oxidation and corrosion

18-8 Stainless Steel Extra-Wide Truss Head Phillips Screws：18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. These screws have an extra-wide truss head that distributes holding pressure to reduce the likelihood of crushing thin material. Length is measured from under the head.

Passivated stainless steel screws have added protection against oxidation and corrosion.

High-Profile Narrow Fillister Head Phillips Screws： Taller than cheese head screws, these have a deep drive to maximize driving power and a narrow diameter to fit in tight spaces. Made from 18-8 stainless steel, they are chemical resistant and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. Length is measured from under the head.

High-Profile Narrow Fillister Head Phillips Screws： Taller than cheese head screws, these have a deep drive to maximize driving power and a narrow diameter to fit in tight spaces. Made from 18-8 stainless steel, they are chemical resistant and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. Length is measured from under the head.

Hexagon Slot Screws

Hexagon Slot Screws, also known as Hexagon Head Screws, is a type of screw made by widening the head of the screw. The head has a hexagonal shape that can be tightened with a wrench, has a high tightening force, and is very easy to adjust. Because the head is medium-sized and easy to change, it is ideal for machinery and equipment, automotive parts, and other applications where adjustments need to be made.

Army-Navy Medium-Strength Steel Hex Head Screws： These screws are made to stringent Army-Navy specifications that ensure performance and reliability. They have a precisely measured unthreaded portion (grip). For added strength, place this portion in joints subjected to sideways forces. Comparable in strength to Grade 5 steel screws, these screws are suitable for fastening most machinery and equipment. The cadmium plating provides good corrosion resistance to salt water. Length is measured from under the head.

Left-Hand Threaded Medium-Strength Grade 5 Steel Hex Head Screws： Made from Grade 5 steel, these screws are suitable for fastening machinery and equipment. Tighten them by turning them to the left; they prevent counterclockwise-moving parts from loosening once fastened. The material meets SAE J429 specifications for quality. Dimensions meet ASME B18.2.1 specifications. Grade 5 steel hex head screws are marked with three radial lines. Length is measured from under the head.

Metric High-Strength Steel Heavy Hex Head Screws for Structural Applications： Designed for construction and exterior building applications, these metric screws are often used to join I-beams and scaffolding. Their partial threading leaves an unthreaded portion that is strong enough to stand up to the sideways forces of joints. Made of Class 10.9 steel, these screws are at least 25% stronger than our medium-strength steel heavy hex head screws. They also have a hot-dipped galvanized finish that makes them ten times more corrosion-resistant than zinc plating so that they won't rust in wet environments. However, this finish is thicker than others, so it should be used with DIN 6916 structural washers and DIN 6915 structural hex nuts. All meet ISO 7412 (formerly DIN 6914), an international standard for screw dimensions.

High-Strength Grade 8 Steel Serrated-Flange Hex Head Screws： About 20% stronger than medium-strength steel screws, these Grade 8 steel screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. Serrations under the head grip the material surface for mild vibration resistance, and the flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. The material meets SAE J429 specifications for quality. Dimensions meet IFI 111 specifications. Grade 8 steel hex head screws are marked with six radial lines. Head height includes the flange. Length is measured from under the flange.

Black-phosphate steel screws are mildly corrosion-resistant in dry environments.

Zinc-plated and zinc yellow-chromate-plated steel screws are corrosion-resistant in wet environments.

Ring Slotted Screws

Ring Slotted Screws are ring-slotted screws that function by placing a spring ring on top of them. When the force of use drops, the spring ring contracts into the slot, thus creating a certain amount of pressure and increasing its tightening force,This type of screw is ideal for applications that require high tightening force, such as vibration damping and anti-loosening.

Locking-Collar Rivets:Also known as Magna-grip lockbolts, these are the strongest rivets we offer. Consisting of a ribbed rivet and a collar (sold separately), they have the holding power to withstand excessive vibration, expansion, and contraction, making them an ideal solution for a wide range of applications.

Installation requires access to both sides of the material and a locking collar rivet tool. The tool pulls the rivet to the collar, clinches it, and clips off any excess length.

Square Slot Screws

Square Slotted Screws are machined into a square shape by beveling both sides of the head of the screw. This type of slotted screw has a better-tightening force and is easy to adjust than Hexagonal Slotted Screws. In addition, its sharp edges improve its penetration in brittle materials.

Medium-Strength SAE Grade 5 Steel Square Head Screws: Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. Large flat sides make them easy to grip with a wrench and keep them from rotating in square holes. A zinc yellow-chromate plating provides corrosion resistance in wet environments. Grade 5 steel square head screws are marked with three radial lines. The material meets SAE J429 specifications for quality. Dimensions meet ASME B18.2.1 specifications. Length is measured from under the head.

Star Grooved Screws

Star-slotted screws are mainly used in applications where a high degree of vibration resistance is required. These screws have six raised star-shaped grooves, making it necessary to use a star wrench to rotate them during tightening, thus reducing the possibility of loosening. In addition, care needs to be taken to keep them from over-tightening them during installation to avoid damaging the equipment.

In summary, different screw groove type has distinct advantages and disadvantages, and their application occasions are different. It is best to choose according to the actual needs of the purchase of screws, which can significantly improve the installation efficiency but also can effectively avoid problems in the installation process.

Metric 18-8 Stainless Steel Button Head Torx Screws:18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. A Torx drive has more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx bits, keys, and drivers. Length is measured from under the head.

High-Strength A286 Stainless Steel Button Head Torx Screws: A286 stainless steel screws have comparable strength to alloy steel with the corrosion and chemical resistance of 18-8 stainless steel. They have a Torx drive that has more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers. Length is measured from under the head.

Metric Stainless Steel Pan Head Torx Screws: Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Torx drives have more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx bits, keys, and drivers. Length is measured from under the head.

Alloy Steel Button Head Torx Screws: Made from alloy steel, these screws are three times stronger than standard steel button head Torx screws. A Torx-Plus drive has more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers. Torx-Plus screws can be used with both Torx-Plus and Torx tools. Length is measured from under the head.

Black-oxide alloy steel screws are mildly corrosion-resistant in dry environments.

Zinc-plated alloy steel screws resist corrosion in wet environments.

If you need Alloy Steel Button Head Torx Screws and provide professional technical support, please get in touch with us at adelajonly@gmail.com or visit our website at https://www.juxinfasteners.com.