ASME B18.3 Rounded Head Screws | McMaster-Carr

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60,000 psi to 79,999 psi

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DFARS Specialty Metals

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1,640 Products

Rounded Head Screws

Stainless Steel Button Head Hex-Drive Screws

Stainless Steel Button Head Hex-Drive Screws

These button head screws won't rust or corrode when exposed to moisture and chemicals

Steel Button Head Hex-Drive Screws

Steel Button Head Hex-Drive Screws

Made of alloy steel for nearly twice the tensile strength of other steel screws

Stainless Steel Button Head Torx Screws

Stainless Steel Button Head Torx Screws

Our most corrosion-resistant button head Torx screws

Steel Flanged Button Head Hex-Drive Screws

Steel Flanged Button Head Hex-Drive Screws

Our strongest flanged rounded head screws

Steel Button Head Torx Plus Screws

Steel Button Head Torx Plus Screws

Our strongest Torx Plus rounded head screws

Steel Pan Head Torx Screws

Steel Pan Head Torx Screws

A deep six-lobe opening prevents your driver from slipping and stripping drives

Tamper-Resistant Torx Stainless Steel Button Head Screws

Tamper-Resistant Torx Stainless Steel Button Head Screws

Deter unauthorized access in corrosive environments

Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws

Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws

Restrict unauthorized access while keeping out contaminants and locking in air and fluid

Stainless Steel Button Head Torx Plus Screws

Stainless Steel Button Head Torx Plus Screws

Our most corrosion-resistant button head Torx Plus screws

Stainless Steel Flanged Button Head Hex-Drive Screws

Stainless Steel Flanged Button Head Hex-Drive Screws

Secure thin and soft materials in corrosive environments without needing a separate washer

Thread-Locking Steel Button Head Hex-Drive Screws

Thread-Locking Steel Button Head Hex-Drive Screws

Strong and vibration resistant to lock parts in place on machinery that experiences mild vibration

Tamper-Resistant Torx Steel Button Head Screws

Tamper-Resistant Torx Steel Button Head Screws

Our strongest tamper-resistant Torx screws

Brass Button Head Hex-Drive Screws

Brass Button Head Hex-Drive Screws

The button head has a shiny look, and these screws won't rust in damp environments

Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Corrosion and vibration resistant, these button head screws secure parts during mild vibration

Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws

Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws

Our most corrosion-resistant hex-drive screws for preventing unauthorized access

Titanium Button Head Hex-Drive Screws

Titanium Button Head Hex-Drive Screws

Nearly as strong as alloy steel but only 40% of the weight

Tamper-Resistant Hex-Drive Steel Button Head Screws

Tamper-Resistant Hex-Drive Steel Button Head Screws

Our strongest hex-drive screws for deterring unauthorized access

Tamper-Resistant Asymmetrical-Drive Stainless Steel Button Head Screws

Tamper-Resistant Asymmetrical-Drive Stainless Steel Button Head Screws

A unique drive that's only available from McMaster-Carr

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)