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System
of
Measurement
Inch
Metric
Thread
Size
See all
1/2"
-
20
Material
Aluminum
Brass
Bronze
Fiberglass
Iron
Plastic
Stainless
Steel
Steel
Thread
Fit
Metric
Class
6g
Metric
Class
6H
Unified
Standard
Class
1A
Unified
Standard
Class
2A
Unified
Standard
Class
2B
Unified
Standard
Class
3A
Unified
Standard
Class
3B
RoHS
Compliance
RoHS
3
(2015/863/EU)
Compliant
RoHS
3
(2015/863/EU)
Compliant
with
Exemptions
Not
Compliant
REACH
Compliance
REACH
(EC
1907/2006)
(06/27/2024,
241
SVHC)
Compliant
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
Thread
Direction
Left
Hand
Right
Hand
Right
Hand
and
Left
Hand
Thread
Type
Rounded
Acme
UN/UNF
(JIC)
UN/UNF
(SAE
45°)
UNC
UNF
UNJF
UNRF
Thread
Spacing
Coarse
Fine
Drive
Style
External
12
-
Point
External
Hex
Hex
Slotted
Tri
-
Groove
Hardness
B
r
i
n
e
l
l
1
6
0
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
1
R
o
c
k
w
e
l
l
B
6
5
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
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
8
9
R
o
c
k
w
e
l
l
C
2
5
R
o
c
k
w
e
l
l
C
2
6
R
o
c
k
w
e
l
l
C
2
8
Tensile
Strength
Less
than
10,000
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
Standard
NAS
SAE
Standard
UL
50
Length
1
/
4
"
3
/
8
"
1
/
2
"
5
/
8
"
2
1
/
3
2
"
4
3
/
6
4
"
1
1
/
1
6
"
3
/
4
"
7
/
8
"
1
"
1
3
/
3
2
"
1
1
/
8
"
1
1
/
4
"
1
1
1
/
3
2
"
1
3
/
8
"
Threading
Fully
Threaded
Partially
Threaded
Threaded
on
Both
Ends
Threaded
on
One
End
DFARS
Compliance
Specialty
Metals
Compliant
(252.225
-
7008)
Specialty
Metals
Compliant
(252.225
-
7009)
Specialty
Metals
COTS
-
Exempt
Not
Specialty
Metals
Compliant
Fastener
Head
Type
12
-
Point
Flat
Headless
Hex
Rounded
Socket
Tee
Threaded
Finish
Black
Oxide
Cadmium
Plated
Cadmium
Yellow
-
Chromate
Plated
Chrome
Plated
Nickel
Chrome
Plated
Nickel
Plated
Passivated
Phosphate
Coated
Zinc
Flake
Coated
Zinc
Plated
Zinc
Yellow
-
Chromate
Plated
Head
Height
0.251"
0.265"
19/64"
5/16"
11/32"
0.36"
3/8"
7/16"
1/2"
33/64"
9/16"
Head
Width
1/2"
9/16"
3/4"
2"
Drive
Size
1/4"
5/16"
3/8"
1/2"
Fastener
Strength
Grade/Class
ASME
Grade
F
ASME
Grade
G
ASTM
Grade
B7
ASTM
Grade
B8
ASTM
Grade
B8M
ASTM
Grade
2H
ASTM
Grade
8
ASTM
Grade
C
ASTM
Grade
BD
SAE
Grade
2
SAE
Grade
5
SAE
Grade
8
SAE
Grade
9
Thread
Length
1
/
4
"
5
/
1
6
"
3
/
8
"
1
5
/
3
2
"
1
/
2
"
9
/
1
6
"
5
/
8
"
1
1
/
1
6
"
3
/
4
"
2
5
/
3
2
"
7
/
8
"
1
"
1
1
/
4
"
1
1
/
2
"
2
"
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1,191 Products
Fastening and Joining
Hex
Head
Screws
Used
with
nuts
to
create
a
stronger
joint
than
flat
and
rounded
screws
194 products
Socket
Head
Screws
With
a
deeper
drive
than
flat
and
rounded
head
screws,
these
withstand
more
torque
for
a
tighter
hold
73 products
Flat
Head
Screws
Fit
in
countersunk
holes
for
a
flush
finish
29 products
Set
Screws
Exert
pressure
at
the
tip
to
hold
parts
in
place,
unlike
screws
that
hold
material
together
with
threads
81 products
12
-
Point
Screws
12
contact
points
handle
more
torque
than
a
hex
head
while
a
flange
eliminates
the
need
for
a
washer
13 products
Rounded
Head
Screws
Sit
just
above
the
surface
for
a
low
-
profile
finish
and
hold
tighter
than
flat
head
screws
23 products
T
-
Bolts
Turn
by
hand
for
easy
fastening,
use
as
a
handle,
or
attach
as
a
point
for
straps
and
clamps
2 products
Shoulder
Screws
Rotate
parts
around
the
cylinder
under
the
head
to
guide
and
align
them
during
installation
16 products
Hex
Nuts
Handle
most
general
fastening
needs
59 products
Coupling
Nuts
Connect
and
extend
threaded
rods
15 products
Locknuts
Hold
fasteners
in
place
to
prevent
loosening
from
vibration
44 products
Flange
Nuts
The
flange
distributes
pressure,
so
you
don't
need
a
washer
24 products
Tamper
-
Resistant
Nuts
Hard
to
detach
without
special
tools
to
prevent
unwanted
removal
1 product
Cap
Nuts
Cover
and
protect
threads
while
adding
a
finished
look;
also
known
as
acorn
nuts
9 products
Thumb
Nuts
Easy
to
tighten
and
loosen
by
hand
for
making
frequent
adjustments
4 products
Lug
Nuts
Secure
pneumatic
wheels
to
axles
1 product
Socket
Nuts
Install
in
recessed
holes
and
tight
spots
where
a
wrench
won’t
fit;
also
known
as
Allen
nuts
2 products
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
223 products
Threaded
Rods
Anchor,
connect,
or
hang
components
in
a
wide
variety
of
applications
122 products
Weld
Nuts
Weld
to
metal
surfaces
to
add
permanent
threads
23 products
Threaded
Inserts
Create
new
threads
or
repair
stripped
threads
46 products
Press
-
Fit
Nuts
Push
into
drilled
or
punched
holes
to
add
threads
to
thin
panels
1 product
Push
Nuts
Press
onto
threads
for
a
light
duty
hold
that’s
faster
to
install
than
typical
nuts
1 product
Standoffs
Threaded
to
separate
or
connect
parts
as
well
as
position
components
in
assemblies
8 products
Single
-
End
Studs
Use
the
unthreaded
end
as
a
pivot
point,
hinge,
shaft,
or
locator
pin
3 products
Taper
Pins
Fit
snugly
into
tapered
holes
to
secure,
position,
and
align
components
16 products
Rivet
Nut
Tools
Install
rivet
nuts
2 products
Power Transmission
Connecting
Rods
Use
with
rod
ends
and
swivel
joints
to
link
components
in
push/pull
assemblies
79 products
Shock
Absorber
Mounting
Nuts
Secure
shock
absorbers
after
threading
them
into
mounting
blocks
1 product
Lead
Screws
and
Nuts
Components
travel
along
a
screw
with
broad,
square
threads
to
clamp
and
lift
heavy
loads
4 products
Material Handling
Eyebolts
Route
rope
through
the
loop
or
attach
hooks
and
shackles
for
lifting
8 products
Turnbuckles
Twist
the
body
or
end
fittings
to
adjust
the
length
and
tension
of
attached
rope
and
chain
18 products
Building and Machinery Hardware
Knobs
Position,
tighten,
and
secure
fixtures
and
equipment
2 products
Handle
Nuts
Attach
to
threaded
shafts
to
quickly
turn
the
shafts
by
hand
3 products
Fabricating and Machining
Drill
Bushings
Fit
in
holes
to
guide
drill
bits
and
other
cutting
tools
for
precise
and
repeatable
holes
and
cuts
5 products
Fluid Handling
Tube
and
Tube
Fittings
Flexible
or
rigid
with
thinner
walls
than
pipe
for
carrying
liquids
and
gases
in
short
runs
6 products
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)