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System
of
Measurement
Inch
Metric
Thread
Size
See all
1/4"
-
28
Length
1
/
8
"
3
/
1
6
"
1
/
4
"
5
/
1
6
"
3
/
8
"
7
/
1
6
"
1
/
2
"
1
7
/
3
2
"
9
/
1
6
"
5
/
8
"
2
1
/
3
2
"
1
1
/
1
6
"
3
/
4
"
2
5
/
3
2
"
7
/
8
"
Fastener
Head
Type
12
-
Point
Flat
Headless
Hex
Rounded
Socket
Thumb
Material
Aluminum
Brass
Plastic
Stainless
Steel
Steel
Threading
Fully
Threaded
Partially
Threaded
Threaded
on
Both
Ends
Threaded
on
One
End
Finish
Black
Oxide
Cadmium
Plated
Chrome
Plated
Corrosion
-
Resistant
Coated
Passivated
Phosphate
Coated
Zinc
Flake
Coated
Zinc
Plated
Zinc
Yellow
-
Chromate
Plated
Drive
Style
Drilled
Spanner
External
12
-
Point
External
Hex
Hex
Phillips
Slotted
Spring
Plunger
Wrench
Tamper
-
Resistant
Hex
Tamper
-
Resistant
Torx
Torx
Plus
Thread
Spacing
Coarse
Fine
Thread
Type
UNC
UNF
UNRF
Fastener
Strength
Grade/Class
ASTM
Grade
B7
ASTM
Grade
B8
ASTM
Grade
BD
SAE
Grade
5
SAE
Grade
8
Tensile
Strength
20,000
psi
to
29,999
psi
30,000
psi
to
99,999
psi
100,000
psi
or
greater
Not
Rated
Specifications
Met
ASME
Standard
ASTM
Standard
DIN
912
Federal
Specification
IFI
Standard
ISO
4762
NAS
SAE
Standard
Thread
Direction
Left
Hand
Right
Hand
Right
Hand
and
Left
Hand
Head
Height
0.107"
0.11"
0.12"
1/8"
0.127"
0.132"
0.144"
0.15"
0.153"
5/32"
0.161"
11/64"
0.175"
3/16"
0.198"
7/32"
0.237"
1/4"
0.255"
9/32"
5/16"
15/32"
1/2"
0.563"
Thread
Fit
Metric
Class
6g
Metric
Class
6H
Unified
Standard
Class
1A
Unified
Standard
Class
2A
Unified
Standard
Class
2B
Unified
Standard
Class
3A
Hardness
R
o
c
k
w
e
l
l
B
4
0
R
o
c
k
w
e
l
l
B
5
5
R
o
c
k
w
e
l
l
B
5
6
R
o
c
k
w
e
l
l
B
6
0
R
o
c
k
w
e
l
l
B
6
1
R
o
c
k
w
e
l
l
B
6
5
R
o
c
k
w
e
l
l
B
6
9
R
o
c
k
w
e
l
l
B
7
0
R
o
c
k
w
e
l
l
B
7
4
R
o
c
k
w
e
l
l
B
7
9
R
o
c
k
w
e
l
l
B
8
0
R
o
c
k
w
e
l
l
B
8
3
R
o
c
k
w
e
l
l
B
8
5
R
o
c
k
w
e
l
l
B
9
6
R
o
c
k
w
e
l
l
B
1
0
0
Socket
Head
Profile
Low
Standard
Military
Specifications
Met
Army
-
Navy
Specification
Military
Specification
Head
Width
1/4"
5/16"
3/8"
7/16"
23/32"
RoHS
Compliance
RoHS
3
(2015/863/EU)
Compliant
RoHS
3
(2015/863/EU)
Compliant
with
Exemptions
Not
Compliant
REACH
Compliance
REACH
(EC
1907/2006)
(01/23/2024,
240
SVHC)
Compliant
REACH
(EC
1907/2006)
(06/14/2023,
235
SVHC)
Compliant
REACH
(EC
1907/2006)
(01/17/2023,
233
SVHC)
Compliant
REACH
(EC
1907/2006)
(06/10/2022,
224
SVHC)
Compliant
REACH
(EC
1907/2006)
(01/17/2022,
223
SVHC)
Compliant
Not
Compliant
Head
Diameter
5/16"
3/8"
0.414"
0.437"
7/16"
0.472"
0.477"
0.492"
1/2"
0.507"
0.517"
0.531"
9/16"
0.573"
37/64"
3/4"
1
1/2"
Forward
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1,342 Products
Fastening and Joining
Hex
Head
Screws
Used
with
nuts
to
create
a
stronger
joint
than
flat
and
rounded
screws
174 products
Socket
Head
Screws
With
a
deeper
drive
than
flat
and
rounded
head
screws,
these
withstand
more
torque
for
a
tighter
hold
166 products
Rounded
Head
Screws
Sit
just
above
the
surface
for
a
low
-
profile
finish
and
hold
tighter
than
flat
head
screws
167 products
Flat
Head
Screws
Fit
in
countersunk
holes
for
a
flush
finish
107 products
12
-
Point
Screws
12
contact
points
handle
more
torque
than
a
hex
head
while
a
flange
eliminates
the
need
for
a
washer
19 products
Thumb
Screws
Tighten
and
loosen
by
hand
without
the
need
for
tools
37 products
Shoulder
Screws
Rotate
parts
around
the
cylinder
under
the
head
to
guide
and
align
them
during
installation
111 products
Set
Screws
Exert
pressure
at
the
tip
to
hold
parts
in
place,
unlike
screws
that
hold
material
together
with
threads
161 products
Studs
Insert
into
holes
to
add
a
threaded
fastening
point
for
attaching
nuts
11 products
Tapping
Screws
Fasten
a
range
of
materials
together
without
needing
to
tap
the
hole
first
5 products
Captive
Panel
Screws
Secure
panels
and
enclosures
while
still
having
access
to
them
12 products
Hanger
Bolts
Suspend
pipe
and
other
fixtures
with
wire
or
cable
ties
4 products
Threaded
Rods
Insert
into
threaded
holes
to
connect
components
127 products
Thread
Adapters
Join
threads
of
a
different
type,
size,
and
gender
129 products
Binding
Barrels
and
Screws
Thread
together
for
a
low
-
profile
fastener
5 products
Spring
Plungers
Apply
accurate,
consistent
pressure
for
positioning,
indexing,
and
ejecting
parts
24 products
Power Transmission
Connecting
Rods
Use
with
rod
ends
and
swivel
joints
to
link
components
in
push/pull
assemblies
63 products
Material Handling
Eyebolts
Route
rope
through
the
loop
or
attach
hooks
and
shackles
for
lifting
4 products
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)