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System of Measurement
Inch
Metric
Thread Size
1
-
6
4
2
-
5
6
3
-
4
8
4
-
4
0
5
-
4
0
6
-
3
2
8
-
3
2
1
0
-
2
4
1
0
-
3
2
1
2
-
2
4
1
/
4
"
-
2
0
5
/
1
6
"
-
1
2
5
/
1
6
"
-
1
8
3
/
8
"
-
1
6
7
/
1
6
"
-
1
4
Length
1
/
1
6
"
5
/
6
4
"
3
/
3
2
"
7
/
6
4
"
1
/
8
"
9
/
6
4
"
5
/
3
2
"
1
1
/
6
4
"
3
/
1
6
"
0
.
1
9
1
"
0
.
1
9
7
"
7
/
3
2
"
0
.
2
2
"
0
.
2
3
8
"
1
/
4
"
Material
Aluminum
Aluminum Oxide Ceramic
Brass
Bronze
Carbon Fiber
Fiberglass
Iron
Nickel
Plastic
Stainless Steel
Steel
Titanium
Zinc
Threading
Fully Threaded
Partially Threaded
Threaded on Both Ends
Threaded on One End
Fastener Head Type
12-Point
Eye
Flat
Headless
Hex
Hook
Oval
Pentagon
Rounded
Socket
Square
Tee
Thumb
Finish
A
n
o
d
i
z
e
d
B
l
a
c
k
O
x
i
d
e
B
l
a
c
k
Z
i
n
c
P
l
a
t
e
d
B
r
a
s
s
P
l
a
t
e
d
B
r
o
n
z
e
P
l
a
t
e
d
C
a
d
m
i
u
m
P
l
a
t
e
d
C
h
r
o
m
e
P
l
a
t
e
d
C
o
r
r
o
s
i
o
n
-
R
e
s
i
s
t
a
n
t
C
o
a
t
e
d
D
y
e
d
G
a
l
v
a
n
i
c
B
a
r
r
i
e
r
C
o
a
t
e
d
G
a
l
v
a
n
i
z
e
d
H
o
t
-
D
i
p
p
e
d
G
a
l
v
a
n
i
z
e
d
N
e
o
p
r
e
n
e
C
o
a
t
e
d
P
a
i
n
t
e
d
P
a
s
s
i
v
a
t
e
d
Fastener Strength Grade/Class
ASTM Grade B6
ASTM Grade B7
ASTM Grade B8
ASTM Grade B8M
ASTM Grade B16
ASTM Grade A
ASTM Grade BD
ASTM Grade A325
ASTM Grade A490
ISO Class 8.8
ISO Class 10.9
ISO Class 12.9
SAE Grade 2
SAE Grade 5
SAE Grade 8
SAE Grade 9
Drive Style
Asymmetrical
Drilled Spanner
External 12-Point
External Hex
External Pentagon
External Square
Hex
Hex with Pilot Recess
JIS
One Way
Phillips
Slotted
Spring Plunger Wrench
Square
Tamper-Resistant Hex
Tamper-Resistant Torx
Tamper-Resistant Torx Plus
Torx
Torx Plus
Tri-Groove
Wrench Flats
Head Width
1
/
8
"
3
/
1
6
"
0
.
1
8
8
"
7
/
3
2
"
1
/
4
"
0
.
3
1
2
"
5
/
1
6
"
0
.
3
1
3
"
2
3
/
6
4
"
3
/
8
"
1
3
/
3
2
"
7
/
1
6
"
1
5
/
3
2
"
1
/
2
"
3
3
/
6
4
"
Head Height
0
.
0
2
5
"
0
.
0
3
1
"
1
/
3
2
"
0
.
0
3
3
"
0
.
0
3
5
"
0
.
0
3
6
"
0
.
0
3
7
"
0
.
0
3
8
"
0
.
0
3
9
"
0
.
0
4
2
"
0
.
0
4
3
"
0
.
0
4
6
"
3
/
6
4
"
0
.
0
4
7
"
0
.
0
4
8
"
Thread Direction
Left Hand
Right Hand
Thread Pitch
0.125 mm
0.2 mm
0.225 mm
0.25 mm
0.3 mm
0.35 mm
0.4 mm
0.45 mm
0.5 mm
0.6 mm
0.7 mm
0.75 mm
0.8 mm
1 mm
1.25 mm
1.5 mm
1.75 mm
2 mm
2.5 mm
3 mm
3.5 mm
4 mm
4.5 mm
5 mm
Thread Spacing
Hide
Coarse
Fine
Extra Fine
Ultra Fine
Thread Type
Metric
UN
UNC
UNRC
UNS
Socket Head Profile
High
Low
Standard
Ultra Low
Specifications Met
ASME Standard
ASTM Standard
DIN Standard
Federal Specification
IFI Standard
ISO Standard
JCIS 10-70
NAS
SAE Standard
Head Diameter
0
.
1
1
6
"
0
.
1
1
8
"
0
.
1
2
9
"
0
.
1
3
7
"
0
.
1
3
8
"
0
.
1
3
9
"
0
.
1
4
"
9
/
6
4
"
0
.
1
4
1
"
0
.
1
4
2
"
0
.
1
4
5
"
5
/
3
2
"
0
.
1
6
0
"
0
.
1
6
1
"
0
.
1
6
2
"
Screw Features
Cutting Wings
Flanged
Nonmarring Tip
Sealing
Tension Indicating
Vented
With Washer
Tensile Strength
Less than 10,000 psi
10,000 psi to 19,999 psi
20,000 psi to 29,999 psi
30,000 psi to 99,999 psi
100,000 psi or greater
Not Rated
Grip Length
1
/
4
"
3
/
8
"
1
/
2
"
5
/
8
"
3
/
4
"
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
"
Drive Size
0
.
0
3
5
"
3
/
6
4
"
0
.
0
5
0
"
1
/
1
6
"
5
/
6
4
"
3
/
3
2
"
7
/
6
4
"
1
/
8
"
9
/
6
4
"
0
.
1
5
6
"
5
/
3
2
"
3
/
1
6
"
7
/
3
2
"
1
/
4
"
9
/
3
2
"
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
RoHS
Compliant
Compliant with Exemptions
Not Compliant
REACH
Compliant
Not Compliant
Export Control Classification Number (ECCN)
1C998
2B999
EAR99
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51,089 Products
Fastening and Joining
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Used with nuts to create a stronger joint than flat and rounded screws
7,271 products
Socket Head Screws
With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold
6,498 products
Rounded Head Screws
Sit just above the surface for a low-profile finish and hold tighter than flat head screws
8,868 products
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Fit in countersunk holes for a flush finish
5,593 products
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Tighten and loosen by hand without the need for tools
1,259 products
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A smooth head provides a finished look while a square neck keeps the bolt in place when using a nut
859 products
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5,968 products
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12 contact points handle more torque than a hex head while a flange eliminates the need for a washer
131 products
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4,153 products
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Fasten a range of materials together without needing to tap the hole first
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145 products
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