Choose these metric screws for fastening most machinery and equipment. They are twice as strong as low-strength steel screws.

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. For use in medium-strength fastening applications.

These screws come with a traceable lot number and a physical and chemical test report. Use them for high-strength fastening.

About half as strong as medium-strength steel screws, these screws can be used for light duty fastening applications, such as securing access panels.

More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water.

With the strength of steel and the corrosion resistance of 18-8 stainless steel, these 17-4 PH stainless steel screws are suitable for high-strength fastening in corrosive environments.

Brass screws are electrically conductive, nonmagnetic, and have good corrosion resistance.

The most common heavy hex head screw, these steel screws meet ASTM A325 regulations for structural joints, such as mating I-beams and scaffolding.

Install these screws with a wrench or a screwdriver. Made from stainless steel, they have good corrosion resistance. A flange under the head means a separate washer is not necessary.

Made from 18-8 stainless steel, these screws have the best chemical and corrosion resistance of our wire-lockable screws. Wire these screws together for more vibration resistance than other types of hex head screws.

Use these general purpose 18-8 stainless steel screws for a variety of fastening applications. They have good chemical resistance.

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.

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.

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.

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.

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.

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.

Seal out contaminants and prevent leaks—a rubber O-ring under the head prevents leaks and seals out contaminants.

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.

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.

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.

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.

A tamper-resistant hex drive (also known as pin-in hex drive) makes these screws difficult to remove without special tools.

Comparable to Class 12.9 steel.

Made from 18-8 stainless steel, these inch-sized shoulder screws have good chemical resistance.

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.

Nickel alloy shoulder screws are more resistant to acids and salt water than stainless steel shoulder screws.

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.

More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water.