8-36 Bolts | McMaster-Carr

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111 Products

Screws and Bolts

Alloy Steel Socket Head Screws

The standard for high-strength fastening.

18-8 Stainless Steel Socket Head Screws

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

18-8 Stainless Steel Button Head Hex Drive Screws

18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic.

Alloy Steel Button Head Hex Drive Screws

Brass Button Head Hex Drive Screws

Brass button head screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.

18-8 Stainless Steel Pan Head Phillips Screws

18-8 stainless steel pan head screws have good chemical resistance and may be mildly magnetic.

Alloy Steel Hex Drive Flat Head Screws

18-8 Stainless Steel Hex Drive Flat Head Screws

These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic.

18-8 Stainless Steel Phillips Flat Head Screws

These screws have good chemical resistance and may be mildly magnetic.

Alloy Steel Cup-Point Set Screws

Made from alloy steel, these inch size set screws have a thin edge that digs into hard surfaces for a secure hold.

18-8 Stainless Steel Cup-Point Set Screws

Made from 18-8 stainless steel, these set screws have good chemical resistance.

Alloy Steel Hollow-Lock Set Screws

Also known as jam set screws, these lock other screws in place, hold pins, and adjust spring tension. A black-oxide finish provides corrosion resistance in dry environments.

Alloy Steel Cone-Point Set Screws

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.

Thread Adapters

Inch-to-Inch Male-Female Hex Thread Adapters

Change thread sizes or types, such as fine to coarse threads, on parts without changing gender.

Inch-to-Metric Male-Female Hex Thread Adapters

Change inch threads to metric with these adapters, or swap metric threads for inch. An external hex lets you tighten or loosen them with a wrench.

Inch-to-Inch Male Hex Thread Adapters

Need to join two female-threaded parts, such as coupling nuts, with dissimilar inch thread sizes? Attach them to these adapters and tighten the exterior hex nut for a secure connection.

Inch-to-Metric Male Hex Thread Adapters

One side inch, one side metric, and a hex in the middle—these handy fasteners connect two female-threaded parts, such as coupling nuts, adapting from inch threads to metric. Tighten with a standard wrench.

Spring Plungers

Slotted Ball-Nose Spring Plungers

Install these spring plungers with a screwdriver—they're slotted on one or both ends.

Slotted Long-Nose Spring Plungers

Slotted on both ends for installation with a screwdriver.

Extension Spring Stud Anchors

A black-oxide finish provides mild corrosion resistance.

Corrosion-Resistant Extension Spring Stud Anchors

These stainless steel anchor studs offer excellent corrosion resistance.