McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

0000-160
000-120
00-90
00-96
0-80
1-64
1-72
2-56
2-64
4-40
4-48
6-32
8-32
10-24
10-32
1/4"-20
5/16"-18
3/8"-16
M0.5
M0.8
M0.9
M1
M1.2
M1.4
M1.6
M1.7
M2
M2.5
M3
M4
M5
M6
M8
M10

	Head Type Head Type


Socket	Rounded

Hex	Flat

	Material Material

	Finish Finish

Black Ultra-Corrosion-
Resistant Coated

Blue Anodized

Cadmium Plated

	Length Length

	Drive Style Drive Style


Hex	Phillips	External Hex

Slotted	Hex with Pilot Recess	Torx

Torx Plus

	Head Diameter Head Diameter

	Threading Threading

	Fully Threaded
	Partially Threaded

	Head Height Head Height

	Rounded Head Style Rounded Head Style


Pan	Cheese

Button	Round

Fillister	Binding

	Socket Head Profile Socket Head Profile


Standard	Low

High

	Thread Type Thread Type

	Thread Pitch Thread Pitch

	Drive Size Drive Size

	Tensile Strength Tensile Strength

Less than 50,000 psi

50,000 to 69,999 psi

70,000 to 99,999 psi

100,000 to 119,999 psi

120,000 psi or greater

Not Rated

	Thread Spacing Thread Spacing

Coarse

Fine

	Rounded Head Profile Rounded Head Profile

	Flat Head Profile Flat Head Profile


Standard	Undercut

	Specifications Met Specifications Met

DIN

ISO

ASME

ASTM

Fed. Spec.

Mil. Spec.

NAS

JIS

	Thread Fit Thread Fit

	Tip Type Tip Type


Flat	Extended

	Hardness Hardness

1,080 Products

Socket Head Screws

Stainless Steel Socket Head Screws

Stainless steel screws have excellent corrosion resistance in most environments.

Alloy Steel Socket Head Screws

With a tensile strength up to 180,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws

Aluminum Socket Head Screws

Aluminum screws are one-third the weight of steel and have good corrosion resistance.

Titanium Socket Head Screws

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.

Plastic Socket Head Screws

Plastic screws are chemical and oil resistant, nonconductive, and lightweight.

Nickel Alloy Socket Head Screws

More corrosion resistant than stainless steel screws, nickel alloy screws have excellent resistance to salt water and some acids.

Brass Socket Head Screws

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

Low-Profile Socket Head Screws

With half the head height of a standard socket head, these screws fit where space is limited.

High-Profile Socket Head Screws

With a head one and a half times taller than a standard socket head, these screws are easier to install in deep counterbored holes and other hard-to-reach places.