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System of Measurement
Inch
Thread Size
Hide
0000-160
000-120
00-90
00-96
0-80
1-64
1-72
2-56
2-64
3-48
3-56
4-40
4-48
5-40
5-44
6-32
6-40
6-48
8-32
8-36
8-40
10-24
10-32
12-24
12-28
1/4"
-20
1/4"
-28
1/4"
-32
5/16"
-18
5/16"
-24
5/16"
-32
3/8"
-16
3/8"
-24
3/8"
-32
7/16"
-14
7/16"
-20
1/2"
-13
1/2"
-20
5/8"
-11
5/8"
-18
3/4"
-10
7/8"
-9
M0.5
M0.8
M0.9
M1
M1.2
M1.4
M1.6
M1.7
M1.8
M2
M2.2
M2.5
M2.6
M3
M3.5
M4
M4.5
M5
M6
M8
M10
M12
M16
M20
Length
1/8"
5/32"
3/16"
7/32"
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
11/16"
3/4"
13/16"
7/8"
1"
1
1/8"
1
1/4"
1
3/8"
1
1/2"
1
5/8"
1
3/4"
1
7/8"
2"
2
1/8"
2
1/4"
2
3/8"
2
1/2"
2
3/4"
3"
3
1/4"
3
1/2"
3
3/4"
4"
4
1/4"
4
1/2"
6"
8"
10"
Drive Style
Asymmetrical
Drilled Spanner
Hex
One Way
Phillips
Slotted
Tamper-Resistant Hex
Tamper-Resistant Torx
Torx
Torx Plus
Tri-Groove
Material
Aluminum
Brass
Plastic
Rubber
Stainless Steel
Steel
Titanium
Zinc Alloy
Rounded Head Style
Binding
Button
Fillister
Pan
Round
Truss
Fastener Head Type
Flanged
Oval
Rounded
Finish
Acrylic Coated
Black Oxide
Black Zinc Plated
Cadmium Plated
Chrome Plated
Painted
PTFE Coated
Zinc Plated
Head Diameter
0.2"
0.214"
0.219"
0.226"
0.232"
0.24"
0.244"
0.26"
0.262"
0.263"
0.268"
0.27"
0.29"
0.294"
0.321"
0.34"
0.505"
0.68"
Threading
Fully Threaded
Partially Threaded
Head Height
0.05"
0.068"
0.073"
0.078"
0.082"
0.086"
0.087"
0.092"
0.097"
0.098"
0.101"
0.103"
0.104"
0.12"
0.128"
0.132"
0.15"
0.19"
Specifications Met
ASME Standard
ASTM Standard
Federal Specification
IFI-124
NAS
SAE J933
Thread Type
UNC
Drive Size
5/64"
1/8"
IP10
IP15
No. 1
No. 2
No. 3
No. 6
T10
T15
U10
Thread Direction
Left Hand
Right Hand
Tip Type
Blunt
Flat
Thread Spacing
Coarse
Rounded Head Profile
High
Low
Narrow
Standard
Wide
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
Screw Size
No. 6
Tensile Strength
Less than 60,000 psi
60,000 psi to 79,999 psi
80,000 psi to 99,999 psi
100,000 psi to 119,999 psi
120,000 psi or greater
Not Rated
RoHS
Compliant
Compliant with Exemptions
Not Compliant
Thread Fit
Unified Standard Class 2A
Unified Standard Class 3A
REACH
Compliant
Not Compliant
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
Export Control Classification Number (ECCN)
1C998
EAR99
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1,029 Products
Rounded Head Screws
Stainless Steel Pan Head Phillips Screws
These pan head Phillips screws won't rust or corrode when exposed to moisture and chemicals
97 products
Steel Pan Head Phillips Screws
Our most popular steel pan head screws
66 products
Stainless Steel Button Head Hex-Drive Screws
These button head screws won't rust or corrode when exposed to moisture and chemicals
42 products
Aluminum Oversized-Flange Button Head Hex-Drive Screws
The lightest flanged screws we offer
5 products
Steel Button Head Hex-Drive Screws
Made of alloy steel for nearly twice the tensile strength of other steel screws
28 products
Plastic Pan Head Phillips Screws
Our most common plastic pan head screws
20 products
Aluminum Round Head Slotted Screws
Our lightest metal round head screws
5 products
Plastic Pan Head Slotted Screws
Lightweight and nonconductive with the simplest drive
13 products
Steel Flanged Button Head Hex-Drive Screws
Our strongest flanged rounded head screws
13 products
Stainless Steel Truss Head Phillips Screws
Our most corrosion-resistant truss head Phillips screws
26 products
Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer
Sharp internal teeth hold screws in place despite frequent movement and vibration
13 products
Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
External washer teeth grip corrosion-resistant screws better than internal teeth during vibration
12 products
Plastic Binding Head Slotted Screws
Keep wires in place while preventing connections from short circuiting
8 products
Stainless Steel Pan Head Combination Phillips/Slotted Screws
Our most corrosion-resistant combination Phillips/slotted screws
14 products
Stainless Steel Button Head Torx Screws
Our most corrosion-resistant button head Torx screws
9 products
Tamper-Resistant Torx Stainless Steel Button Head Screws
Deter unauthorized access in corrosive environments
11 products
Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws
Restrict unauthorized access while keeping out contaminants and locking in air and fluid
7 products
Stainless Steel Pan Head Phillips Screws with Split Lock Washer
Stop screws from loosening due to light vibration when fastening in corrosive environments
5 products
Stainless Steel Round Head Slotted Screws
Our most corrosion-resistant round head slotted screws
23 products
Steel Pan Head Slotted Screws
The pan head has the simplest drive style
13 products
Steel Round Head Combination Phillips/Slotted Screws
Two common drive styles in a single screw
11 products
Steel Round Head Slotted Screws
The round head has the simplest drive style
18 products
Stainless Steel Fillister Head Slotted Screws
The most corrosion-resistant fillister head slotted screws we offer
17 products
Stainless Steel Round Head Phillips Screws
The most corrosion-resistant round head Phillips screws we offer
16 products
Brass Round Head Slotted Screws
The slotted round head has a shiny look, and these screws won't rust in damp environments
14 products
Brass Pan Head Phillips Screws
The Phillips pan head has a shiny look, and these screws won't rust in damp environments
11 products
Steel Button Head Torx Plus Screws
Our strongest Torx Plus rounded head screws
11 products
Stainless Steel Button Head Torx Plus Screws
Our most corrosion-resistant button head Torx Plus screws
6 products
Stainless Steel Fillister Head Phillips Screws
The most corrosion-resistant fillister head Phillips screws we offer
6 products
Brass Button Head Hex-Drive Screws
The button head has a shiny look, and these screws won't rust in damp environments
5 products
Tamper-Resistant Drilled Spanner Stainless Steel Truss Head Screws
A wide top distributes weight and a two-hole design deters tampering
7 products
Plastic Round Head Slotted Screws
Create a finished appearance on panels and covers with the smooth, domed head
13 products
Stainless Steel Pan Head Slotted Screws
The most corrosion-resistant pan head slotted screws we offer
22 products
Stainless Steel Binding Head Slotted Screws
Our most corrosion-resistant binding head screws
15 products
Steel Pan Head Phillips Screws with External-Tooth Lock Washer
External teeth provide a stronger grip than internal-tooth lock washers during frequent vibration
12 products
Steel Pan Head Torx Screws
A deep six-lobe opening prevents your driver from slipping and stripping drives
12 products
Steel Binding Head Slotted Screws
A wide, tapered top clamps down on electrical connections
11 products
Stainless Steel Flanged Button Head Hex-Drive Screws
Secure thin and soft materials in corrosive environments without needing a separate washer
9 products
Stainless Steel Oversized-Flange Button Head Hex-Drive Screws
Up to twice the diameter of standard flanges to spread pressure over a larger area without a washer
8 products
Thread-Locking Stainless Steel Button Head Hex-Drive Screws
Corrosion and vibration resistant, these button head screws secure parts during mild vibration
8 products
Thread-Locking Steel Button Head Hex-Drive Screws
Strong and vibration resistant to lock parts in place on machinery that experiences mild vibration
8 products
Steel Fillister Head Slotted Screws
The tall, narrow head reduces the chance of slotted drivers slipping and fits into tight spaces
7 products
Sealing Stainless Steel Pan Head Phillips Screws
Keep out dust and contaminants while locking in air and fluid
29 products
Plastic Fillister Head Slotted Screws
Lightweight and nonconductive with a tall head and narrow diameter
8 products
Stainless Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer
Sharp internal washer teeth keep corrosion-resistant screws in place during vibration
13 products
Thread-Locking Stainless Steel Pan Head Phillips Screws
Corrosion and vibration resistant, these pan head screws secure parts during mild vibration
13 products
Steel Round Head Phillips Screws
A domed profile that gives a decorative look
12 products
Brass Pan Head Slotted Screws
The slotted pan head has a shiny look, and these screws won't rust in damp environments
10 products
Sealing Thread-Locking Stainless Steel Pan Head Phillips Screws
Keep parts from coming loose while keeping out contaminants and locking in air and fluid
9 products
Stainless Steel Pan Head Phillips Screws with Spring Lock Washer
A spring lock washer holds corrosion-resistant screws better than tooth-lock washers during vibration
9 products
Stainless Steel Pan Head Torx Plus Screws
The most corrosion-resistant pan head Torx Plus screws we offer
8 products
Brass Binding Head Slotted Screws
Conductive and nonmagnetic with a wide, tapered head
7 products
Stainless Steel Truss Head Slotted Screws
Our most corrosion-resistant truss head slotted screws
7 products
Tamper-Resistant One-Way-Drive Stainless Steel Round Head Screws
Install with a slotted driver in corrosive environments and remove with a special tool
8 products
Wire-Locking Stainless Steel Fillister Head Slotted Screws
The best vibration resistance of our rounded head screws
9 products
Brass Fillister Head Slotted Screws
The slotted fillister head has a shiny look, and these screws won't rust in damp environments
6 products
Stainless Steel Pan Head Phillips Screws with Flat and Split Lock Washer
Stop screws from coming loose due to light vibration while protecting your surface from damage
6 products
Steel Pan Head Phillips Screws with Spring Lock Washer
Grip tighter for better vibration resistance than tooth-lock washers
6 products
Steel Pan Head Torx Plus Screws
Larger lobes than Torx withstand even more torque without the driver slipping and stripping the drive
6 products
Tamper-Resistant Drilled Spanner Stainless Steel Pan Head Screws
The unique two-hole design inhibits tampering
8 products
Stainless Steel Oversized Truss Head Slotted Screws
Protect thin materials with a head that's up to twice the size of standard truss screws
5 products
Steel Pan Head Phillips Screws with Split Lock Washer
Stop screws from loosening due to light vibration
5 products
Steel Truss Head Slotted Screws
A wide head spreads out pressure and minimizes the risk of crushing thin material
5 products
Tamper-Resistant Hex-Drive Stainless Steel Button Head Screws
Our most corrosion-resistant hex-drive screws for preventing unauthorized access
6 products
Tamper-Resistant Hex-Drive Steel Button Head Screws
Our strongest hex-drive screws for deterring unauthorized access
6 products
Tamper-Resistant One-Way-Drive Steel Round Head Screws
Install with a slotted driver but need a special tool to remove
6 products
Tamper-Resistant Torx Steel Button Head Screws
Our strongest tamper-resistant Torx screws
7 products
Left-Hand-Thread Stainless Steel Button Head Hex-Drive Screws
Turn these screws to the left to tighten them
4 products
Titanium Pan Head Phillips Screws
Lightweight like aluminum and more corrosion resistant than stainless steel
4 products
Venting Stainless Steel Button Head Hex-Drive Screws
Prevent the buildup of pressure or vacuum in sealed spaces
4 products
Tamper-Resistant Tri-Groove-Drive Steel Round Head Screws
Sloped with three notches, so they're nearly impossible to grip without the proper tool
4 products
Thread-Locking Stainless Steel Button Head Torx Screws
These corrosion-resistant Torx screws keep parts in place on machinery with vibration
3 products
Titanium Button Head Hex-Drive Screws
Nearly as strong as alloy steel but only 40% of the weight
3 products
Tamper-Resistant Asymmetrical-Drive Stainless Steel Button Head Screws
A unique drive that's only available from McMaster-Carr
3 products
Other Products
Oval Head Screws
The domed top sits slightly above the surface of countersunk holes for a decorative look
40 products
Tapping Screws
Fasten a range of materials together without needing to tap the hole first
38 products
Binding Barrels
Create custom low-profile fasteners with binding barrel posts, caps, and screws
28 products
Anchors
Secure anything from signs to heavy machinery in concrete, brick, and drywall
9 products
Captive Panel Screws
Secure panels and enclosures while still having access to them
5 products
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)