Flat Head Socket Heads | McMaster-Carr

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Specifications Met

Fed. Spec. QQ-P-35

Socket Head Profile

Tensile Strength

50,000 psi to 59,999 psi

60,000 psi to 99,999 psi

100,000 psi or greater

Fastener Strength Grade/Class

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DFARS Specialty Metals

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Compliant with Exemptions

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3,489 Products

Flat Head Screws

Stainless Steel Hex-Drive Flat Head Screws

Stainless Steel Hex-Drive Flat Head Screws

The most corrosion-resistant hex-drive flat head screws we offer

Steel Hex-Drive Flat Head Screws

Steel Hex-Drive Flat Head Screws

Our strongest hex-drive flat head screws

Stainless Steel Torx Flat Head Screws

Stainless Steel Torx Flat Head Screws

The most corrosion-resistant Torx flat head screws we offer

Brass Hex-Drive Flat Head Screws

Brass Hex-Drive Flat Head Screws

Conductive, nonmagnetic, and corrosion resistant in humid environments

Thread-Locking Steel Hex-Drive Flat Head Screws

Thread-Locking Steel Hex-Drive Flat Head Screws

Keep parts from coming loose on machinery with mild vibration

Venting Stainless Steel Hex-Drive Flat Head Screws

Venting Stainless Steel Hex-Drive Flat Head Screws

Prevent the build up of pressure or vacuum in sealed spaces

Stainless Steel Torx Plus Flat Head Screws

Stainless Steel Torx Plus Flat Head Screws

The most corrosion-resistant Torx Plus flat head screws we offer

Tamper-Resistant Torx Plus Steel Flat Head Screws

Tamper-Resistant Torx Plus Steel Flat Head Screws

Our strongest tamper-resistant Torx Plus flat head screws

Tamper-Resistant Torx Stainless Steel Flat Head Screws

Tamper-Resistant Torx Stainless Steel Flat Head Screws

Hold up against corrosion, deter unauthorized access, and prevent your driver from slipping

Steel Torx Flat Head Screws

Steel Torx Flat Head Screws

The deep six-lobe opening prevents your driver from slipping

Thread-Locking Stainless Steel Hex-Drive Flat Head Screws

Thread-Locking Stainless Steel Hex-Drive Flat Head Screws

Resist corrosion and won't come loose on machinery with mild vibration

Steel Torx Plus Flat Head Screws

Steel Torx Plus Flat Head Screws

The strongest Torx Plus flat head screws we offer

Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws

Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws

A secure, tamper-resistant option for corrosive environments

Sealing Tamper-Resistant Torx Stainless Steel Flat Head Screws

Sealing Tamper-Resistant Torx Stainless Steel Flat Head Screws

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

Tamper-Resistant Hex-Drive Stainless Steel Flat Head Screws

Tamper-Resistant Hex-Drive Stainless Steel Flat Head Screws

Prevent unauthorized access and damage to components

Left-Hand-Thread Stainless Steel Hex-Drive Flat Head Screws

Left-Hand-Thread Stainless Steel Hex-Drive Flat Head Screws

Turn to the left to tighten and prevent loosening from counterclockwise motion

Tamper-Resistant Torx Steel Flat Head Screws

Tamper-Resistant Torx Steel Flat Head Screws

Our strongest tamper-resistant Torx flat head screws

Stainless Steel Hex-Drive Flat Head Screw Assortments

Stainless Steel Hex-Drive Flat Head Screw Assortments

Keep a range of sizes of our most corrosion-resistant flat head screws on hand

Steel Hex-Drive Flat Head Screw Assortments

Steel Hex-Drive Flat Head Screw Assortments

Keep a range of sizes on hand to fasten a variety of machinery and equipment

Other Products

Bit Sockets

Turn fasteners with an internal drive style without slipping and damaging the drive

Fastener Assortments

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

Shoulder Screws

Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

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