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System
of
Measurement
Inch
Metric
Thread
Size
See all
M5
Length
1
/
2
"
1
1
/
1
6
"
4
m
m
5
m
m
6
m
m
7
m
m
7
.
2
m
m
8
m
m
8
.
8
m
m
9
m
m
9
.
5
m
m
1
0
m
m
1
0
.
4
m
m
1
1
m
m
1
2
m
m
Material
Aluminum
Brass
Iron
Nickel
Plastic
Stainless
Steel
Steel
Titanium
Fastener
Head
Type
Flat
Headless
Hex
Oval
Rounded
Socket
Tapped
Threaded
Thumb
Thread
Pitch
0.45
mm
0.5
mm
0.6
mm
0.7
mm
0.8
mm
1
mm
1.25
mm
1.5
mm
2.2
mm
Drive
Style
Drilled
Spanner
External
Hex
External
Square
Hex
Hex
with
Pilot
Recess
JIS
Phillips
Slotted
Tamper
-
Resistant
Hex
Tamper
-
Resistant
Torx
Torx
Torx
Plus
Tri
-
Groove
Wrench
Flats
Threading
Fully
Threaded
Partially
Threaded
Threaded
on
Both
Ends
Threaded
on
One
End
Finish
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
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
r
y
F
i
l
m
L
u
b
r
i
c
a
t
e
d
D
y
e
d
N
e
o
p
r
e
n
e
C
o
a
t
e
d
N
i
c
k
e
l
P
l
a
t
e
d
P
a
s
s
i
v
a
t
e
d
P
h
o
s
p
h
a
t
e
C
o
a
t
e
d
S
i
l
v
e
r
P
l
a
t
e
d
T
i
n
P
l
a
t
e
d
T
i
n
Z
i
n
c
P
l
a
t
e
d
T
i
t
a
n
i
u
m
C
a
r
b
o
n
N
i
t
r
i
d
e
(
T
i
C
N
)
C
o
a
t
e
d
Socket
Head
Profile
Low
Standard
Ultra
Low
Thread
Direction
Left
Hand
Right
Hand
Right
Hand
and
Left
Hand
Head
Diameter
6
.
5
m
m
7
.
6
m
m
7
.
9
m
m
8
.
5
m
m
8
.
7
m
m
8
.
7
2
m
m
9
m
m
9
.
1
9
m
m
9
.
2
m
m
9
.
3
m
m
9
.
4
m
m
9
.
5
m
m
9
.
9
5
m
m
9
.
9
8
m
m
1
0
m
m
Thread
Type
BSPP
BSPT
Metric
Metric
Rounded
Trapezoidal
NPT
NPTF
UNC
UNF
Universal
Specifications
Met
ASME
Standard
ASTM
Standard
DIN
Standard
ISO
Standard
Japanese
Industrial
Standard
(JIS)
NAS
SAE
Standard
UL
508A
Head
Height
1
/
4
"
1
.
3
5
m
m
1
.
7
m
m
1
.
8
m
m
1
.
9
m
m
1
.
9
8
m
m
2
m
m
2
.
1
5
m
m
2
.
5
m
m
2
.
6
3
m
m
2
.
7
m
m
2
.
7
4
m
m
2
.
7
5
m
m
2
.
8
m
m
3
m
m
Thread
Spacing
Coarse
Fine
RoHS
Compliance
RoHS
3
(2015/863/EU)
Compliant
RoHS
3
(2015/863/EU)
Compliant
with
Exemptions
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
Drive
Size
5/32"
2
mm
2.5
mm
3
mm
4
mm
8
mm
IP25
No.
1
No.
2
No.
10
T25
Thread
Fit
Metric
Class
4g6g
Metric
Class
4H
Metric
Class
4H6H
Metric
Class
5g6g
Metric
Class
6g
Metric
Class
6G
Metric
Class
6h
Metric
Class
6H
Metric
Class
7H
Metric
Class
8g
Unified
Standard
Class
2A
Unified
Standard
Class
2B
Unified
Standard
Class
3A
Not
Rated
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
REACH
(EC
1907/2006)
(07/08/2021,
219
SVHC)
Compliant
Fastener
Strength
Grade/Class
ASTM
Grade
B7
ISO
Class
8.8
ISO
Class
10.9
ISO
Class
12.9
ISO
Class
04
ISO
Class
5
ISO
Class
6
ISO
Class
8
ISO
Class
10
Hardness
B
r
i
n
e
l
l
2
0
0
R
o
c
k
w
e
l
l
B
4
0
R
o
c
k
w
e
l
l
B
4
9
R
o
c
k
w
e
l
l
B
5
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
5
R
o
c
k
w
e
l
l
B
6
7
R
o
c
k
w
e
l
l
B
7
0
R
o
c
k
w
e
l
l
B
7
1
R
o
c
k
w
e
l
l
B
7
3
R
o
c
k
w
e
l
l
B
7
5
R
o
c
k
w
e
l
l
B
7
8
R
o
c
k
w
e
l
l
B
7
9
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3,115 Products
Fastening and Joining
Socket
Head
Screws
With
a
deeper
drive
than
flat
and
rounded
head
screws,
these
withstand
more
torque
for
a
tighter
hold
336 products
Rounded
Head
Screws
Sit
just
above
the
surface
for
a
low
-
profile
finish
and
hold
tighter
than
flat
head
screws
564 products
Flat
Head
Screws
Fit
in
countersunk
holes
for
a
flush
finish
313 products
Hex
Head
Screws
Used
with
nuts
to
create
a
stronger
joint
than
flat
and
rounded
screws
123 products
Shoulder
Screws
Rotate
parts
around
the
cylinder
under
the
head
to
guide
and
align
them
during
installation
364 products
Set
Screws
Exert
pressure
at
the
tip
to
hold
parts
in
place,
unlike
screws
that
hold
material
together
with
threads
210 products
Thumb
Screws
Tighten
and
loosen
by
hand
without
the
need
for
tools
54 products
Studs
Insert
into
holes
to
add
a
threaded
fastening
point
for
attaching
nuts
47 products
Captive
Panel
Screws
Secure
panels
and
enclosures
while
still
having
access
to
them
18 products
Tapping
Screws
Fasten
a
range
of
materials
together
without
needing
to
tap
the
hole
first
17 products
Carriage
Bolts
A
smooth
head
provides
a
finished
look
while
a
square
neck
keeps
the
bolt
in
place
when
using
a
nut
7 products
Hanger
Bolts
Suspend
pipe
and
other
fixtures
with
wire
or
cable
ties
4 products
Wood
Screws
Fasten
material
to
wood
or
pieces
of
wood
to
each
other
8 products
Threaded
Inserts
Create
new
threads
or
repair
stripped
threads
94 products
Clip
-
On
Nuts
Slide
onto
the
edge
of
thin
panels
to
create
a
fastening
point
4 products
Rivet
Nuts
Add
threads
to
thin
panels
with
access
from
only
one
side;
also
known
as
blind
inserts
23 products
Press
-
Fit
Nuts
Push
into
drilled
or
punched
holes
to
add
threads
to
thin
panels
16 products
Adhesive
-
Mount
Nuts
Attach
threads
to
material
that’s
too
thin
for
a
threaded
insert
4 products
Snap
-
In
Nuts
Push
into
square
holes
in
thin
materials
to
add
bolts
for
aligning
off
-
center
parts
4 products
Weld
Nuts
Weld
to
metal
surfaces
to
add
permanent
threads
9 products
Locknuts
Hold
fasteners
in
place
to
prevent
loosening
from
vibration
29 products
Hex
Nuts
Handle
most
general
fastening
needs
53 products
Flange
Nuts
The
flange
distributes
pressure,
so
you
don't
need
a
washer
21 products
Thumb
Nuts
Easy
to
tighten
and
loosen
by
hand
for
making
frequent
adjustments
18 products
Coupling
Nuts
Connect
and
extend
threaded
rods
13 products
Square
Nuts
Flat
sides
won’t
spin
in
channels
and
square
holes
6 products
Cap
Nuts
Cover
and
protect
threads
while
adding
a
finished
look
7 products
Socket
Nuts
Install
in
recessed
holes
and
tight
spots
where
a
wrench
won’t
fit;
also
known
as
Allen
nuts
2 products
Tamper
-
Resistant
Nuts
Hard
to
detach
without
special
tools
to
prevent
unwanted
removal
1 product
Slotted
Round
Nuts
Fasten
with
a
screwdriver
in
tight
spots
where
there's
no
room
for
a
wrench
1 product
Sealing
Nuts
Prevent
leaks
and
block
out
contaminants
with
a
rubber
seal
1 product
Thread
Adapters
Join
threads
of
a
different
type,
size,
and
gender
306 products
Standoffs
Threaded
to
separate
or
connect
parts
as
well
as
position
components
in
assemblies
175 products
Binding
Barrels
and
Screws
Thread
together
for
a
low
-
profile
fastener
9 products
Threaded
Rods
Insert
into
threaded
holes
to
connect
components
57 products
Dowel
Pins
Use
as
pivots,
hinges,
shafts,
jigs,
and
fixtures
to
position
and
hold
parts
in
place
28 products
Taper
Pins
Fit
snugly
into
tapered
holes
to
secure,
position,
and
align
components
6 products
Anchors
Secure
structural
joints
in
concrete,
brick,
and
other
building
materials
1 product
Push
Nut
Installation
Tools
Press
nuts
and
retaining
rings
onto
threaded
fasteners
and
shafts
1 product
Rivet
Nut
Tools
Install
rivet
nuts
4 products
Building and Machinery Hardware
T
-
Slotted
Framing
Fasteners
Secure
brackets
and
other
accessories
to
T
-
slotted
rails
8 products
Knobs
Position,
tighten,
and
secure
fixtures
and
equipment
10 products
Cam
Handles
For
fast
clamping,
push
down
on
the
handle
to
draw
two
parts
together
5 products
Power Transmission
Lead
Screws
and
Nuts
Components
travel
along
a
screw
with
broad,
square
threads
to
clamp
and
lift
heavy
loads
4 products
Connecting
Rods
Use
with
rod
ends
and
swivel
joints
to
link
components
in
push/pull
assemblies
32 products
Fabricating and Machining
T
-
Slot
Nuts
Combine
with
setup
studs
to
mount
fixtures
to
machine
tables
1 product
Setup
Studs
Secure
setup
clamps
and
fixtures
to
your
machine
table
or
assemble
heavy
machines
3 products
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)