We will reply to your message within an hour.
The standard for high-strength fastening.
Choose these screws for their adherence to strict military standards for material and construction.
Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening.
A Torx-Plus drive has more points of contact than a hex drive, allowing you to tighten these screws with less slippage or damage to the recess.
These screws are specially tempered to meet ASTM A193 specifications for temperatures up to 1100° F.
Use these general purpose 18-8 stainless steel screws for a variety of fastening applications. They have good chemical resistance.
Choose these screws for their adherence to strict military standards for material and construction. Screws are 18-8 stainless steel for good chemical resistance.
Cleaned and double bagged in an ISO Class 5 (Fed. Std. Class 100) clean room, these screws are ready to use on chambers and components in high-vacuum systems.
Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. Made from 18-8 stainless steel, these screws have good chemical resistance.
More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water.
These screws are hardened to be 40% stronger than standard 316 stainless steel screws, yet they still have excellent corrosion resistance. Use them in chemical and marine applications.
Often used to fasten parts in engines and turbines, these are our strongest stainless steel screws. They are comparable in strength to alloy steel with the corrosion resistance of 18-8 stainless steel.
Brass screws are electrically conductive, nonmagnetic, and have good corrosion resistance.
Plastic screws are chemical and oil resistant, nonconductive, and lightweight.
Aluminum screws are one-third the weight of steel and have good corrosion resistance.
Our most corrosion-resistant metal screws, titanium screws withstand salt water, acids, and chemicals. They have a high strength-to-weight ratio and are about 40% lighter than steel screws.
More corrosion resistant than stainless steel screws, nickel alloy screws have excellent resistance to salt water and some acids.
Bronze screws are about 40% stronger than brass screws and provide more corrosion resistance to salt water, gases, and sewage. They are nonmagnetic and electrically conductive.
Made of alloy steel, these low-profile screws are nearly twice as strong as their stainless steel counterparts. With half the height of a standard socket head, these low-profile screws fit in tight spaces.
Nearly as strong as steel, these stainless steel screws won’t rust in outdoor, washdown, and other corrosive environments. With half the height of a standard socket head, these low-profile screws fit in tight spaces.
More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water. Use these low-profile screws where space is limited.
Made from alloy steel, these screws are nearly twice as strong as stainless steel low-profile screws. With a head height one-third the size of a standard socket head, they fit in the tightest spaces.
More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water. Their ultra-low-profile lets them fit in the tightest spaces.
With a head one and a half times taller than a standard socket head, these screws are easier to install in deep counterbored holes and other hard-to-reach places.
With a tensile strength of 170,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and are nearly two and a half times stronger than stainless steel thread-locking screws. They have a thread locker to prevent loosening from vibration.
These screws have good chemical resistance. A thread locker bonded to the threads prevents loosening from vibration.
More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water. They have a thread locker to resist vibration.
With a tensile strength of 170,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and are more than twice as strong as stainless steel wire-lockable screws. These resist vibration better than any other socket head screw.
Stainless steel screws have excellent corrosion resistance in most environments. Wire these screws together for more vibration resistance than other types of socket head screws.
Stainless steel screws have excellent corrosion resistance in most environments. They have a split lock washer to create tension and resist loosening from vibration.
With a tensile strength of 180,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and more than two and a half times stronger than stainless steel screws with split lock washer. The split lock washer helps to resist vibration.
For use where sideways forces are a concern, these screws have a precisely measured unthreaded portion (grip) for a strong hold. Their flanged head distributes pressure where the screw meets the surface, so you don't need a washer.
These general purpose flanged screws distribute pressure where the screw meets the surface, eliminating the need for a washer.
Serrations under the head grip the material's surface for mild vibration resistance. The flange distributes pressure across the material's surface, eliminating the need for a washer.
A rubber O-ring under the head of these screws prevents leaks and seals out contaminants.
The nylon patch bonded to the threads of these socket head screws adds friction to keep vibration from loosening them, while their O-ring prevents leaks and seals out contaminants.
No need for separate bits—these screws lock directly onto square-drive socket wrenches, reducing the risk of dropping parts during installation.
Drilled through the head and shaft, these screws vent fluid and gases trapped below the screw, making them good for vacuum applications.
Fasten these screws inside a high-vacuum system without bringing in contaminants.
A freely rotating washer distributes pressure over a wider area than a flange, preventing damage to your material's surface.
Nonconductive and softer than brass, the nylon tip reduces vibration and eliminates damage from metal touching metal.
The nonmarring brass tip is electrically conductive and harder than nylon, but soft enough to conform to most surfaces and reduce damage from metal-on-metal contact.
These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic.
These metric 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic.
More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water. They may be mildly magnetic.
More corrosion resistant than 18-8 stainless steel screws, these metric screws have excellent resistance to chemicals and salt water. They may be mildly magnetic.
Closely spaced threads on these screws fit in holes with a fine pitch. They're not compatible with standard metric threads.
These metric brass screws are electrically conductive, nonmagnetic, and have good corrosion resistance.
Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws.
Stainless steel screws have excellent corrosion resistance in most environments.
Tighten these screws by turning them to the left; once fastened, they prevent loosening from counterclockwise motion.
Tighten these metric screws by turning them to the left; once fastened, they prevent loosening from counterclockwise motion.
These screws are drilled through the shaft to vent fluids and gases trapped under the screw.
To vent fluids and gases trapped under the screw, these metric screws are drilled through the shaft.
18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic.
316 stainless steel screws resist corrosion from chemicals and salt water better than 18-8 stainless steel screws. They may be mildly magnetic.
More corrosion resistant than 18-8 stainless steel screws, these button head screws have excellent resistance to chemicals and salt water. They may be mildly magnetic.
These metric alloy steel screws are nearly twice as strong as stainless steel button head screws.
Brass button head screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Made from brass, these metric button head screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
As strong as alloy steel and about 40% lighter, these metric titanium screws are known for their high strength-to-weight ratio. They stand up to salt water, acids, and chemicals.
Known for their high strength-to-weight ratio, these titanium screws are as strong as alloy steel and about 40% lighter. They stand up to salt water, acids, and chemicals.
These metric alloy steel screws are nearly twice as strong as stainless steel button head screws. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer.
Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer.
Made from 18-8 stainless steel, these metric screws have good chemical resistance and may be mildly magnetic. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer.
18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. The flange distributes pressure across a wide surface, eliminating the need for a separate washer.
More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer. Screws may be mildly magnetic.
These metric 316 stainless steel screws resist corrosion from chemicals and salt water better than 18-8 stainless steel screws. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer. Screws may be mildly magnetic.
These aluminum screws are lightweight and resist corrosion in wet environments. They have a flange that is wider and thicker than our other flanged screws, so they distribute pressure the best.
Made from aluminum, these metric screws are lightweight and resist corrosion in wet environments. The flange is wider and thicker than our other flanged screws, so they distribute pressure the best.
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. The flange is wider and thicker than our other flanged screws, so they distribute pressure the best.
These metric 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. The flange is wider and thicker than our other flanged screws, so they distribute pressure the best.
Comparable in diameter to a washer, the flange on these screws distributes pressure better than standard flanged screws. Made from 316 stainless steel, they have excellent resistance to chemicals and salt water. Screws may be mildly magnetic.
With a flange comparable in size to a washer, these metric screws distribute pressure better than standard flanged screws. Made from 316 stainless steel, they have excellent resistance to chemicals and salt water. Screws may be mildly magnetic.
These metric 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. A nylon patch bonded to the threads adds friction to prevent loosening from vibration.
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. A nylon patch bonded to the threads adds friction to prevent loosening from vibration.
Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws.
Turn these metric screws to the left to tighten; once fastened, they prevent loosening from counterclockwise motion. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.
To vent fluid and gas trapped under the screw, these metric screws are drilled through the shaft. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.
Tighten these screws by turning them to the left; once fastened, they prevent loosening from counterclockwise motion. Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic.
These screws are drilled through the shaft to vent fluids and gases trapped under the screw. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.
Comparable in strength to Grade 8 steel. These screws have inch thread sizes.
Comparable to Class 12.9 steel.
Use these screws in thin materials; they have a shorter threaded portion than our standard shoulder screws. They’re comparable in strength to Grade 8 steel.
With threads the same diameter as the shoulder, these inch-sized screws can handle heavy loads. They’re comparable to Grade 8 steel.
The metric-sized threads on these screws are the same diameter as the shoulder. Comparable in strength to Class 12.9 steel.
These shoulder screws come with a traceable lot number and material test report. Similar in strength to Grade 8 steel.
With inch-sized threads the same diameter as the shoulder, these screws can handle heavy loads. They’re 18-8 stainless steel for good chemical resistance.
Made from 18-8 stainless steel, these inch-sized shoulder screws have good chemical resistance.
These screws have metric thread sizes. They are 18-8 stainless steel for good chemical resistance.
For metric thread sizes with excellent resistance to chemicals and salt water, choose these 316 stainless steel shoulder screws.
More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water. These screws have inch thread sizes.
Shoulder screws made of 17-4 PH stainless steel are nearly twice as strong as 18-8 stainless steel and have the same corrosion resistance. These screws have inch thread sizes.
One-third the weight of steel, aluminum shoulder screws are lightweight and have good corrosion resistance.
Titanium shoulder screws have a high strength-to-weight ratio and are more resistant to acids and salt water than nickel shoulder screws.
Nickel alloy shoulder screws are more resistant to acids and salt water than stainless steel shoulder screws.
These shoulder screws are chemical resistant, nonconductive, and lightweight.
The head height of these screws is about two-thirds the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines.
These metric screws have a head height that's about two-thirds the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines.
With a reduced head size and an unthreaded shoulder, use these screws as a shaft or dowel pin for small rotating parts in low-clearance applications.
These have a head height about one-third the head height of a standard shoulder screw.
Tighten these shoulder screws by turning them to the left; once fastened, they resist loosening from counterclockwise motion.
Screw these shoulders onto a stud.
A locking element on the threads adds friction to resist loosening. Comparable to Grade 8 steel, these alloy steel shoulder screws are the strongest we offer.
Available in metric sizes, these screws have a locking element on the threads that adds friction to resist loosening. Comparable to Grade 8 steel, they are the strongest screws we offer.
These shoulder screws have good chemical resistance.
More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water.
With a hex socket at the tip as well as the head, you can fasten these shoulder screws from the tip when the head cannot be reached.
These shoulder screws come with a traceable lot number and material test report.
With a shoulder that’s twice as precise as standard shoulder screws, these metric shoulder screws act as a shaft or axle for bearings and other moving parts in applications that require smooth and accurate movement, such as measuring and lab equipment. Made of 18-8 stainless steel, they’re nearly as strong as steel but won’t rust in outdoor or washdown environments.
Made of 416 stainless steel, these shoulder screws are almost twice as strong as 18-8 stainless steel and have the same corrosion resistance.
These metric 316 stainless steel shoulder screws are more corrosion resistant than 18-8 stainless steel shoulder screws. They also have excellent resistance to chemicals and salt water.
Brass shoulder screws are electrically conductive, nonmagnetic, and have good corrosion resistance.
Comparable to Grade 8 steel, these screws are the strongest precision shoulder screws we offer.
Offered in metric sizes, these brass shoulder screws are electrically conductive, nonmagnetic, and have good corrosion resistance.
These screws have a head height about one-third the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines.
These slotted screws have a head height about one-third the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines.
Install these socket head screws through a hole and thread on a retainer to keep secure—no special tools are required.
Flat head screws are angled under the head to fit flush within countersunk holes.
Shoulder screws have a cylindrical shoulder under the head that allows parts to rotate around or slide along its length. They have a standard shoulder with an undersized tolerance to fit most machinery and equipment.
These assortments include button head screws.
Includes charts that list specifications and tightening guidelines for socket screws as well as charts that provide decimal equivalents and drill sizes.