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The standard for high-strength fastening.
Use these general purpose 18-8 stainless steel screws for a variety of fastening applications. They have good chemical resistance.
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.
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.
Plastic screws are chemical and oil resistant, nonconductive, and lightweight.
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.
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 nearly two and a half times stronger than stainless steel thread-locking screws. They have a thread locker to prevent loosening from 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.
A rubber O-ring under the head of these screws prevents leaks and seals out contaminants.
Fasten these screws inside a high-vacuum system without bringing in 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.
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.
18-8 stainless steel button head screws have good chemical resistance and 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.
Brass button head screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
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.
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Torx and Torx-Plus drives have more points of contact than other drives, allowing you to tighten the screw without damaging the recess.
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.
These screws have a Torx or Torx-Plus drive for more points of contact than other drives, allowing you to tighten the screw without damaging the recess.
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.
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 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.
These 18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic. The tamper-resistant Torx drive (also known as a pin-in Torx drive) makes them difficult to remove without special tools.
To prevent unwanted removal, these screws have a tamper-resistant Torx drive—also known as a pin-in Torx drive—that makes them difficult to unscrew without special tools. An O-ring under the head blocks leaks and seals out dust and dirt.
Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws. Their tamper-resistant Torx drive (also known as a pin-in Torx drive) makes them difficult to remove without special tools.
These 18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic. The tamper-resistant hex drive (also known as a pin-in hex drive) makes them difficult to remove without special tools.
These button head screws have a unique drive that is sold only by McMaster-Carr, making them difficult to remove without a special driver bit. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.
These 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.
Brass screws are electrically conductive, nonmagnetic, and have good corrosion resistance.
Made from alloy steel, these screws are twice as strong as standard steel Torx flat head screws.
With a tamper-resistant Torx or Torx Plus drive (also known as a pin-in Torx or Torx Plus drive), these screws are difficult to remove without special tools.
Prevent unwanted removal, leaks, and contamination with these sealing Torx screws.
A tamper-resistant hex drive (also known as pin-in hex drive) makes these screws difficult to remove without special tools.
Stainless steel screws have excellent corrosion resistance in most environments.
These screws are drilled through the shaft to vent fluids and gases trapped under the screw.
Comparable in strength to Grade 8 steel. These screws have inch thread sizes.
These shoulder screws come with a traceable lot number and material test report. Similar in strength to Grade 8 steel.
Made from 18-8 stainless steel, these inch-sized 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. 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.
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.
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.
Made from alloy steel, these inch size set screws have a thin edge that digs into hard surfaces for a secure hold.
Made from 18-8 stainless steel, these set screws have good chemical resistance.
Made from 316 stainless steel, these set screws have excellent chemical resistance and can be used in saltwater environments.
Brass set screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
More corrosion resistant than stainless steel, nickel alloy set screws have excellent resistance to salt water and some acids.
More corrosion resistant than 18-8 stainless steel set screws, these have excellent resistance to chemicals and salt water.
These alloy steel set screws have a thin edge that digs into hard surfaces for a secure hold. A nylon locking element grips threads to resist loosening.
These 18-8 stainless steel set screws are chemical resistant. They have a nylon locking patch that grips threads to resist loosening.
Made from black-oxide alloy steel, these set screws resist corrosion in dry environments. They dig into hard surfaces for a secure hold and have serrations on the cup edge that grip the material surface to resist loosening.
Made from 18-8 stainless steel, these set screws are chemical resistant. They have serrations on the cup edge that grip the material surface to resist loosening.
Made from 18-8 stainless steel, these set screws are chemical resistant. The tip makes good contact on flat surfaces and allows you to make frequent adjustments with minimal surface damage.
Made from 316 stainless steel, these set screws have excellent chemical resistance and can be used in saltwater environments. The tip makes good contact on flat surfaces and allows you to make frequent adjustments with minimal surface damage.
The tip makes good contact on flat surfaces and allows you to make frequent adjustments with minimal surface damage.
A nylon locking patch grips threads to resist loosening.
These chemical-resistant 18-8 stainless steel screws have an extra-soft nylon tip, which minimizes the damage that can occur from metal-on-metal contact. Use them on soft surfaces such as aluminum.
These alloy steel set screws have an extra-soft nylon tip, which minimizes the damage that can occur from metal-on-metal contact. Use them set screws on soft surfaces such as aluminum.
With a tip that's harder than nylon and silver, these alloy steel set screws provide a secure hold on hard surfaces. The body has a black-oxide finish to resist corrosion in dry environments.
These set screws have a tip that is harder than nylon and silver to provide a secure hold on hard surfaces. The body is 18-8 stainless steel for good chemical resistance.
These set screws have a softer tip than brass-tip set screws to minimize surface damage. Use them on hard surfaces.
Made of alloy steel, these set screws are often used in U-shaped and V-shaped grooves and on other sloped or angled surfaces. The oval tip allows for frequent adjustments with minimal surface damage.
These set screws have good chemical resistance.
Also known as half dog-point set screws, these set screws have a protruding tip that locks within a mating hole or slot to keep parts aligned.
These 18-8 stainless steel set screws have good chemical resistance. Also known as half dog-point set screws, they have a protruding tip that locks within a mating hole or slot to keep parts aligned.
Stainless steel set screws have excellent corrosion resistance in most environments.
Also known as full dog-point set screws, the tip is twice as long as the tip on other extended-tip set screws for greater engagement in deep mating holes.
These alloy steel set screws have a pointed tip that wedges into the contact surface for a secure hold on soft materials such as brass.
These 18-8 stainless steel set screws are chemical resistant. A pointed tip wedges into the contact surface for a secure hold on soft materials such as brass.