How many types of fasteners are there? Do you know?

How many types of fasteners are there? Do you know?

Fasteners are a class of mechanical parts widely used for fastening connections. Various machinery, equipment, vehicles, ships, railroads, bridges, buildings, structures, tools, instruments, meters, supplies, etc., can be seen above various fasteners. It is characterized by a wide variety of specifications, performance, and use of different, and standardization, serialization, and generalization of the kind of degree is also very high. Therefore, some people also have a national standard of a class of fasteners called standard fasteners or simply standard parts. Fasteners are the most widely used mechanical foundation parts. Please contact our team if you need high-quality fasteners with more detailed specifications and related information.

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Fastener product specifications, dimensions, tolerances, weight, performance, surface conditions, marking methods, acceptance inspection, marking and packaging, and other items of the specific requirements.

Fasteners commonly used testing equipment solutions: fastener development and design of the most critical link is the quality control; from the feed to the finished product shipment, there are several significant gates, and these several gates have different inspection methods. First of all, the feed is related to the appearance, size, elements, performance, harmful substances test, etc.; process is more appearance, size, knocking test, forging line; heat treatment is more appearance, hardness, torque, tension, metallurgical, etc.; surface treatment is more hydrogen embrittlement test, plating, salt spray, etc., including shipment of a harmful substances test. In the size and appearance testing, the common is the secondary element, contour measuring machine, three coordinate measuring machine, image sorting machine (this is a full selector); Mechanical and chemical testing, the main hardness machine (Rockwell and Vickers), tensile machine, metallurgical microscope; Material testing, there is a spectral analyzer, salt spray testing machine.

Fasteners include bolts, studs, screws, nuts, washers, and pins, which usually include the following 12 types of parts:

1. Bolt: by the head and screw (with external threads of the cylinder) composed of two parts of a class of fasteners, need to cooperate with the nut, used to fasten the connection of two parts with a through-hole. This form of connection is called bolt connection. If the nut from the bolt screws down, it can make the two parts separate, so the bolt connection is removable. Alloy Steel Hex Drive Flat Head Screws,18-8 Stainless Steel Phillips Flat Head Screws, Phillips Oval Head Screws,18-8 Stainless Steel Slotted Flat Head Screws, Stainless Steel Slotted Oval Head Screws, Metric Steel Torx Flat Head Screws, Tamper-Resistant Torx Flat Head Screws, Alloy Steel Thread-Locking Hex Drive Flat Head Screws, Metric Sealing Flat Head Screws, Metric Left-Hand Threaded Flat Head Screws, Steel 12-Point Screws, Medium-Strength SAE Grade 5 Steel Square Head Screws, Socket Head Captive Panel Screws, Square-Neck Flat-Head Plow Bolts, Square-Neck Oval-Head Plow Bolts, Pentagon Head Screws, Steel Stud Anchors for Concrete, Super-Corrosion-Resistant 316 Stainless Steel Stud Anchors for Concrete, Steel Female-Threaded Anchors for Concrete,18-8 Stainless Steel Binding Barrels and Screws, Steel Shoulder Screws for Binding Barrels and so on.

2. Stud: no head, only the two ends of a class of fasteners with external threads. Connection, it must be screwed into one end with internally threaded holes in the parts, the other end through the parts with through holes, and then screwed on the nut, even if the two parts are tightly connected into a whole. This connection is called the stud connection and belongs to the detachable connection. Mainly used for one of the connected parts, thickness is large, requires a compact structure, or due to frequent disassembly, should not be used in bolt connection occasions. High-Strength Steel Threaded Rods， Metric Medium-Strength Steel Threaded Rods—Grade B7， Medium-Strength Steel Threaded Rods—Class 8.8， Super-Corrosion-Resistant 316 Stainless Steel Threaded Rods， Ultra-High-Temperature Carbon Fiber Threaded Rods， Ultra-High-Temperature Carbon Fiber Threaded Rods， Super-Corrosion-Resistant Nickel Alloy Threaded Rods， Super-Corrosion-Resistant Nickel Alloy Threaded Rods， Threaded on One End Studs， Threaded on One End Studs， Threaded on One End Studs with Cotter Pin， Threaded on One End Studs with Cotter Pin， Threaded on One End Studs with Cotter Pin， Metric Stainless Steel Wood Screw Threaded Studs， Metric Stainless Steel Wood Screw Threaded Studs， Metric Stainless Steel Wood Screw Threaded Studs， Hex Drive Wood Screw Threaded Studs， Threaded on Both Ends Alloy Steel Shoulder Studs， Weld Studs， Stainless Steel Right-Angle Weld Studs， Steel Right-Angle Weld Studs， Stainless Steel Adhesive-Ready Studs， Steel Adhesive-Ready Studs， Adhesive-Back Studs， Hollow Threaded Studs，Blind Rivet Studs and so on.

3. Screws: also by the head and screw, two parts of a class of fasteners, according to the use, can be divided into three categories: machine screws, fastening screws, and special purpose screws. Machine screws are mainly used for tightening threaded holes in the parts, and through-hole parts with a fastening connection between the parts, do not need to nut with (this form of connection is called screw connection and also belong to the removable connection; it can also be used with the nut with the two through-hole parts with a fastening connection between the parts.) Set screws are mainly used to fix the relative position between two parts. Special-purpose screws, such as ring screws for lifting parts. High-Temperature Alloy Steel Socket Head Screws—Grade B7,

Serrated-Flange Socket Head Screws,18-8 Stainless Steel Button Head Hex Drive Screws,18-8 Stainless Steel Extra-Wide Truss Head Phillips Screws, Stainless Steel Decorative Round Head Phillips Screws, Metric High-Strength High-Temperature PEEK Pan Head Phillips Screws, High-Profile Narrow Fillister Head Phillips Screws,18-8 Stainless Steel Pan Head Slotted Screws,316 Stainless Steel Narrow Cheese Head Slotted Screws, Brass Decorative Round Head Slotted Screws, Low-Profile Ultra-Wide Truss Head Slotted Screws, Stainless Steel Binding Head Slotted Screws, Metric 18-8 Stainless Steel Button Head Torx Screws, Metric Painted Steel Pan Head Torx Screws, Metric 18-8 Stainless Steel Flanged Button Head Screws, Alloy Steel Flanged Button Head Screws, Stainless Steel Pan Head Screws with Internal-Tooth Lock Washer, Stainless Steel Thread-Locking Button Head Hex Drive Screws, Alloy Steel Thread-Locking Button Head Hex Drive Screws, Metric Alloy Steel Tamper-Resistant Button Head Torx Screws,Stainless Steel Tamper-Resistant One-Way Round Head Screws,Sealing Pan Head Screws,Stainless Steel Ultra-Wide Flanged Button Head Screws,Left-Hand Threaded Button Head Screws,Medium-Strength Metric Class 8.8 Steel Flanged Hex Head Screws,Stainless Steel Flanged Hex Head Screws with Slotted Drive,Medium-Strength Metric Class 8.8 Steel Thread-Locking Hex Head Screws,Metric Same-Size Thread Alloy Steel Shoulder Screws and so on .

4. Nut: with internal threaded holes, the shape is generally shown as a flat hexagonal column, there are flat square or flat cylindrical, with bolts, studs or machine screws, used to fasten the connection between the two parts, so that it becomes a whole piece. Medium-Strength Steel Hex Nuts, Left-Hand Threaded Medium-Strength Steel Hex Nuts, Medium-Strength Steel Thin Hex Nuts, Extreme-Strength Steel Heavy Hex Nuts, Mil. Spec. 18-8 Stainless Steel Narrow Hex Nuts, Jam Nuts for Turnbuckles, Nylon-Insert Locknuts, Center-Lock Distorted-Thread Locknuts, Locknuts with External-Tooth Lock Washer, Locknuts with Spring-Lock Washer, Locknuts for use with Cotter Pins, Flex-Top Locknuts for Heavy Vibration, Steel-Insert Locknuts for Extreme Vibration, Spring-Stop Locknuts, Medium-Strength Steel Serrated Flange Locknuts, Medium-Strength Steel Nylon-Insert Flange Locknuts, High-Strength Steel Distorted-Thread Flange Locknuts, Metric Medium-Strength Steel Distorted-Thread Flange Locknuts, Steel High-Torque 12-Point Flange Nuts,18-8 Stainless Steel Cap Nuts, Wing Thumb Nuts, Knurled-Head Thumb Nuts, Sanitary Spade-Head Thumb Nuts, Hex-Head Thumb Nuts, Square Nuts, Concave Square Nuts, Steel Hex Panel Nuts, Steel Socket Nuts, Tamper-Resistant Tri-Groove Nuts, Metric Tight-Space Slotted Round Nuts, Steel Press-Fit Nuts for Sheet Metal, Stainless Steel Aligning Press-Fit Nuts for Sheet Metal, Steel Hex Weld Nuts, Metric No-Slip Clip-On Barrel Nuts,Steel Snap-In Nuts,Tube-Connecting Nuts,Steel Twist-Resistant Rivet Nuts and so on.

5. Self-tapping screws: similar to machine screws, but the threads on the screw for special self-tapping screws with threads. Used to fasten the connection of two thin metal components so that it becomes a whole, the components need to be made beforehand on the small hole; due to the high hardness of this screw can be screwed directly into the holes in the components, so that the formation of response in the components of the internal thread. Steel Hex Head Drilling Screws for Metal, Steel Phillips Rounded Head Drilling Screws for Metal, Square-Drive Rounded Head Drilling Screws for Metal, Extra-Wide Rounded Head Drilling Screws for Metal, Tamper-Resistant Rounded Head Drilling Screws for Metal, Low-Profile Rounded Head Drilling Screws for Metal, Stainless Steel Flat Head Drilling Screws for Metal, Steel Flat Head Drilling Screws for Metal, Oval Head Drilling Screws for Metal, Tamper-Resistant Flat Head Drilling Screws for Metal, Steel Drilling Screws with Washer for Metal, Drilling Screws for Joining Fabric to Metal, Strip-Resistant Drilling Screws for Metal,18-8 Stainless Steel Phillips Rounded Head Screws for Sheet Metal, Steel Square-Drive Rounded Head Screws for Sheet Metal, Extra-Wide Rounded Head Screws for Sheet Metal, Decorative Rounded Head Screws for Sheet Metal, Rounded Head Screws with Washer for Sheet Metal, Flanged Rounded Head Screws for Sheet Metal, Tamper-Resistant Rounded Head Screws for Sheet Metal,Tamper-Resistant Rounded Head Screws for Sheet Metal,Square-Drive Flat Head Screws for Sheet Metal,Tamper-Resistant Torx Flat Head Screws for Sheet Metal,One-Way Oval Head Screws for Sheet Metal,18-8 Stainless Steel Flanged Hex Head Screws for Sheet Metal,Blunt Screws for Sheet Metal,Strip-Resistant Screws for Sheet Metal,18-8 Stainless Steel Phillips Rounded Head Thread-Forming Screws for Plastic,Steel Torx Rounded Head Thread-Forming Screws for Plastic,Steel Hex Head Screws for Joining Plastic to Wood,Flat Head Screws for Wood,Phillips Decorative Rounded Head Screws for Wood,Phillips Decorative Rounded Head Screws for Wood,Phillips Small-Head Screws for Joining Drywall to Metal Framing and so on.

6. Wood screws: also similar to the machine screws, but the threads on the screw for special wood screws with threads, can be screwed directly into the wooden components (or parts), used to a metal (or non-metallic) with through-hole parts and a wooden component fastening connection together. This connection is also removable. Steel Phillips Flat Head Screws for Wood, Steel Phillips Flat Head Screws for Wood, Steel Phillips Flat Head Screws for Wood, Brass Phillips Flat Head Screws for Wood, Brass Phillips Flat Head Screws for Wood, Brass Square-Drive Flat-Head Screws for Wood, Steel Slotted Flat Head Screws for Wood, Brass Slotted Flat Head Screws for Wood, Stainless Steel Slotted Flat Head Screws for Wood, Torx Flat Head Screws for Wood, Stainless Steel Slotted Oval Head Screws for Wood, Brass Slotted Oval Head Screws for Wood, Phillips Oval Head Screws for Wood, Phillips Decorative Rounded Head Screws for Wood, Steel Slotted Decorative Rounded Head Screws for Wood, Brass Slotted Decorative Rounded Head Screws for Wood, Steel Hex Head Screws for Wood,18-8 Stainless Steel Hex Head Screws for Wood, Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws for Wood, Metric Steel Hex Head Screws for Wood, Flanged Rounded Head Screws for Wood, Steel Flanged Hex Head Screws for Wood,Stainless Steel Flanged Hex Head Screws for Wood,Steel Phillips Drilling Screws for Joining Wood to Metal,Screws for Hardwood,Steel Rounded Head Screws for Plywood and Oriented Strand Board,Rounded Head Screws for Particleboard and Fiberboard,18-8 Stainless Steel Square-Drive Screws for Softwood and Plastic-Wood Composites,Sealing Screws for Softwood and Plastic-Wood Composites,Blunt Screws for Wood,Super-Corrosion-Resistant 316 Stainless Steel Thread-Cutting Small-Head Screws for Softwood and Plastic-Wood Composites and so on .

7. Washers: the shape of a flat circular ring of a class of fasteners. Placed on the bolt, screw, or nut support surface and the connection between the surface of the parts play a role in increasing the contact surface area of the connected parts, reducing the pressure per unit area, and protecting the surface of the connected part is not damaged; another type of elastic washers, but also play a role in preventing the nut back to loosening—general-purpose Washers, Mil. Spec. washers, Mil. Spec. Plastic Washers, Electrical-Insulating Plastic Washers, High-Temperature Plastic Washers, Finishing Countersunk Washers, and ASME Washers, also known as Type B.

Narrow washers have a smaller OD than regular and wide washers for applications where SAE and USS washers won’t fit. Regular washers have a larger OD than SAE washers. They’re generally as large as or larger than USS washers. Wide washers spread your fastener’s load over a larger area than other washers to cover oversized holes and limit damage to soft material. They have a larger OD than both SAE and USS washers. Metric Countersunk Washers, Oversized Clipped Washers, Square Washers for Blind Rivets, Adhesive-Back Washers, Angled-Edge Washers for Tie-Down Straps, Split Lock Washers, Spring Lock Washers, External-Tooth Lock Washers, Internal-Tooth Lock Washers, Internal-/External-Tooth Lock Washers, Belleville Spring Lock Washers for Socket Head Screws, Spring Lock Washers for Slotted Bearing Nuts, Wedge Lock Washers, Tab Lock Washers, Lock Washers for Square-Neck Bolts, Coil Lock Washers, Metric High-Pressure-Rated Metal-Bonded Sealing Washers, Leveling and Wave Washers, Cushioning Washers, Metric Single-Wave Washers, Single-Wave Washers, Oversized Split Lock Washers, Sleeve Washers for Soft Material, Spring Lock Washers for Plastic Screws, Countersunk Tight-Grip External-Tooth Lock Washers, Internal-Tooth Lock Washers for Soft Material, Wedge Lock Washers, Corrosion-Inhibiting Washers for Battery Terminals and so on.

Three hundred sixteen stainless steel washers resist chemicals and salt water. They may be mildly magnetic.

18-8 stainless steel washers have excellent corrosion resistance in most environments. They may be mildly magnetic. Black-oxide 18-8 stainless steel washers also have mild corrosion resistance in dry environments.

17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. They’re stronger than 18-8 stainless steel washers.

Black-oxide steel washers have mild corrosion resistance in dry environments.

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

Galvanized steel washers are ten times as corrosion-resistant as zinc-plated steel washers.

Copper and brass washers are corrosion-resistant in wet environments, nonmagnetic, and electrically conductive. Brass washers are nickel-plated for a decorative finish.

Aluminum washers are lightweight and resist corrosion in wet environments.

Titanium washers are extremely corrosion-resistant in marine environments and chemical-processing plants. They may be mildly magnetic.

8. Retaining ring: For installation in the machine or equipment, the shaft groove or shaft hole groove plays a role in preventing the parts on the shaft or hole from moving left and right.

9. Pins are mainly used for positioning parts around; some can also be used for connecting parts, fixing parts, transmitting power, or locking period fasteners.

Retaining rings, Heavy Duty External Retaining Rings, Heavy Duty External Retaining Rings, Mil. Spec. External Retaining Rings, Inverted External Retaining Rings, Self-Locking External Retaining Rings, Bowed External Retaining Rings, Side-Mount External Retaining Rings, Side-Mount External Retaining Rings, Low-Clearance Side-Mount External Retaining Rings, Heavy Duty Side-Mount External Retaining Rings, Wide-Grip Side-Mount External Retaining Rings, Bowed Side-Mount External Retaining Rings, Bowed Side-Mount External Retaining Rings, Heavy Duty Spiral External Retaining Rings, Spiral External Retaining Rings, Single-Turn Spiral External Retaining Rings, Push-On External Retaining Rings, Push-On Retaining Caps, Flanged Push-On External Retaining Rings, Rectangular Push-On External Retaining Rings, Speared Ends External Retaining Rings, Low-Clearance External Retaining Rings, Clip-On External Retaining Rings, Internal Retaining Rings, Inverted Internal Retaining Rings, Heavy Duty Internal Retaining Rings, Bowed Internal Retaining Rings, Internal Teeth Retaining Rings, Single-Turn Spiral Internal Retaining Rings,Heavy Duty Spiral Internal Retaining Rings,Spiral Internal Retaining Rings,Push-On Internal Retaining Rings and so on.

No groove is required—these rings have teeth that firmly grip the bore. Use them in unhardened shafts that are softer than the push ring. The metal must be smooth enough for the ring to form an interference grip. They are not recommended for nickel, chrome, or nitride-coated shafts.

1060-1090 spring steel rings are an economical choice with good strength. The black-phosphate finish is mildly corrosion-resistant in dry environments.

17-7 PH stainless steel rings are high-strength and have good corrosion resistance. They are passivated for added protection against corrosion.

10. Blind Rivets： The rivet body and rivet mandrel roared are two parts of a class of fasteners used to fasten the connection of two parts with holes (or components so that they become a whole piece. This form of connection is called a riveted connection, short riveted. It belongs to the non-removable links. If the two parts are connected separately, the rivets on the parts will be destroyed.

Aluminum Domed Head Blind Rivets,18-8 Stainless Steel Domed Head Blind Rivets, Zinc-Plated Steel Domed Head Blind Rivets,316 Stainless Steel Domed Head Blind Rivets, Copper Domed Head Blind Rivets, Choose-a-Color Domed Head Blind Rivets, Aluminum Wide-Thickness-Range Domed Head Blind Rivets,18-8 Stainless Steel Wide-Thickness-Range Domed Head Blind Rivets, Choose-a-Color Wide-Thickness-Range Domed Head Blind Rivets, Miniature Domed Head Blind Rivets, Aluminum Flush-Mount Blind Rivets,18-8 Stainless Steel Flush-Mount Blind Rivets, Zinc-Plated Steel Flush-Mount Blind Rivets, Nickel Flush-Mount Blind Rivets, Wide-Thickness-Range Flush-Mount Blind Rivets, Aluminum Large-Diameter Domed Head Blind Rivets,18-8 Stainless Steel Large-Diameter Domed Head Blind Rivets, Zinc-Plated Steel Large-Diameter Domed Head Blind Rivets, Choose-a-Color Large-Diameter Domed Head Blind Rivets, Wide-Thickness-Range Large-Diameter Domed Head Blind Rivets, Zinc-Plated Steel Domed Head High-Strength Blind Rivets,18-8 Stainless Steel Domed Head High-Strength Blind Rivets,Aluminum Domed Head High-Strength Blind Rivets,18-8 Stainless Steel Wide-Thickness-Range Domed Head High-Strength Blind Rivets,Zinc-Plated Steel Wide-Thickness-Range Domed Head High-Strength Blind Rivets,Aluminum Wide-Thickness-Range Domed Head High-Strength Blind Rivets,18-8 Stainless Steel Wide-Thickness-Range Flush-Mount High-Strength Blind Rivets,Aluminum Wide-Thickness-Range Flush-Mount High-Strength Blind Rivets,18-8 Stainless Steel Domed Head Sealing Blind Rivets,Aluminum Domed Head Sealing Blind Rivets,Aluminum Domed Head Sealing Blind Rivets with Plastic Seal,High-Strength Blind Rivets for Soft Materials,Blind Rivets for Soft Materials,Blind Rivets for Wood,Plastic Blind Rivets and so on.

 11. Combination of screw fasteners: combination of parts is a combination of a class of fasteners supplied, such as some machine screws (or bolts, tapping screws) and flat washers (or spring washers, lock washers) combination of supply; connecting vice refers to some special bolts, nuts and washers combination of a class of fasteners supplied, such as the steel structure of the high-strength large hexagonal bolts with a combination of connections. Stainless Steel Socket Head Screws with Split Lock Washer, Alloy Steel Socket Head Screws with Split Lock Washer, Sealing Socket Head Screws, Socket Head Screws with Flat Washer, Aluminum Ultra-Wide Flanged Button Head Screws, Metric Aluminum Ultra-Wide Flanged Button Head Screws, Stainless Steel Ultra-Wide Flanged Button Head Screws, Stainless Steel Pan Head Screws with Internal-Tooth Lock Washer, Metric Stainless Steel Pan Head Screws with Spring Lock Washer, Stainless Steel Pan Head Screws with Spring Lock Washer, Steel Pan Head Screws with Split Lock Washer, Stainless Steel Pan Head Screws with Split Lock Washer, Pan Head Screws with Flat and Split Lock Washer, Hex Head Screws with Lock Washer, Sealing Hex Head Screws, Hex Head Screws with Flat Washer, Sealing Tamper-Resistant Torx Flat Head Screws, Sealing Flat Head Screws, Stainless Steel Hex Head Screws for Joining Plastic to Wood, Steel Hex Head Screws for Joining Plastic to Wood, Rounded Head Screws for Joining Plastic to Wood and so on.

 12. Welding screws: by the nail rod and nail head (or no nail head) composed of different types of fasteners, with the welding method to other fixed connections in a part (or component) above, to then connect with other parts.

Stainless Steel Right-Angle Weld Studs, Steel Right-Angle Weld Studs, Through-Hole-Mount Weld Pins, Surface-Mount Weld Pins, Stud Welding Systems, Join threaded studs and pins to steel and stainless steel with resistance welding that won't damage the opposite side of the material. Threaded studs are for thin-gauge base materials. Copper-plated steel studs have good corrosion resistance. 18-8 stainless steel studs are more corrosion-resistant than copper-plated ones. Aluminum studs are more lightweight than steel or stainless steel studs. They're nonmagnetic. In wet environments, they resist corrosion.

Stud Welding Systems: Join threaded studs and pins to steel and stainless steel with resistance welding that won't damage the opposite side of the material. Pins are used to install insulation and acoustic lining.

Stud Welding Systems: Join threaded studs and pins to steel and stainless steel with resistance welding that won't damage the opposite side of the material. Collets must be the same size as the stud or pin you are welding and are not interchangeable with studs from other systems.