Sealing Machine Screws | McMaster-Carr

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Screw Features

Application

System of Measurement

Thread Size

Length

Material

Stainless Steel

Fastener Head Type

Drive Style

Tamper-Resistant Torx

Head Height

Head Diameter

Flat Head Profile

Threading

Partially Threaded

O-Ring Material

Fluoroelastomer

Silicone Rubber

Viton® Fluoroelastomer

Socket Head Profile

Rounded Head Style

Countersink Angle

Thread Type

Specifications Met

Finish

Thread Direction

DFARS Specialty Metals

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Thread Pitch

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

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1,153 Products

Fastening and Joining

Rounded Head Screws

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish that won't snag on surrounding parts

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

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