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System
of
Measurement
Inch
Metric
Thread
Type
Ball
BSPP
BSPT
Metric
Metric
Ball
Metric
Rounded
Trapezoidal
Metric
Trapezoidal
NPT
NPTF
Roller
UNC
UNF
Universal
Thread
Size
M
0
.
5
M
0
.
8
M
0
.
9
M
1
M
1
.
2
M
1
.
4
M
1
.
6
M
1
.
7
M
1
.
8
M
2
M
2
.
2
M
2
.
3
M
2
.
5
M
2
.
6
M
3
Length
1
m
m
1
.
5
m
m
2
m
m
2
.
5
m
m
3
m
m
4
m
m
4
.
8
5
m
m
5
m
m
5
.
5
m
m
5
.
6
m
m
6
m
m
6
.
1
m
m
6
.
5
m
m
6
.
6
m
m
7
m
m
Fastener
Head
Type
12
-
Point
Domed
Flat
Flush
Mount
Headless
Hex
Knob
L
-
Handle
Loop
Oval
Plain
Retaining
Ring
Groove
Ring
Rounded
Socket
Square
Tapped
T
-
Handle
Threaded
Thumb
T
-
Slot
Material
A
l
u
m
i
n
u
m
B
r
a
s
s
B
r
o
n
z
e
C
a
r
b
o
n
F
i
b
e
r
C
e
r
a
m
i
c
C
o
p
p
e
r
F
i
b
e
r
F
i
b
e
r
g
l
a
s
s
H
a
r
d
F
i
b
e
r
I
r
o
n
L
e
a
t
h
e
r
N
i
c
k
e
l
P
l
a
s
t
i
c
R
u
b
b
e
r
S
t
a
i
n
l
e
s
s
S
t
e
e
l
Thread
Pitch
0
.
1
2
5
m
m
0
.
2
m
m
0
.
2
2
5
m
m
0
.
2
5
m
m
0
.
3
m
m
0
.
3
5
m
m
0
.
4
m
m
0
.
4
5
m
m
0
.
5
m
m
0
.
6
m
m
0
.
7
m
m
0
.
7
5
m
m
0
.
8
m
m
1
m
m
1
.
2
5
m
m
Drive
Style
Drilled
Spanner
External
12
-
Point
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
A
l
u
m
i
n
u
m
P
l
a
t
e
d
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
C
a
d
m
i
u
m
P
l
a
t
e
d
C
h
r
o
m
a
t
e
C
o
n
v
e
r
s
i
o
n
C
o
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
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
L
a
c
q
u
e
r
C
o
a
t
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
Socket
Head
Profile
Low
Standard
Ultra
Low
Thread
Direction
Left
Hand
Right
Hand
Right
Hand
and
Left
Hand
Specifications
Met
ASME
Standard
ASTM
Standard
DIN
Standard
EN
Standard
Fed.
Spec.
QQ
-
S
-
698
ISO
Standard
Japanese
Industrial
Standard
(JIS)
JCIS
10
-
70
MSS
Standard
NAS
SAE
Standard
UL
508A
Thread
Spacing
Coarse
Fine
Extra
Fine
Ultra
Fine
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
REACH
(EC
1907/2006)
(07/08/2021,
219
SVHC)
Compliant
Not
Compliant
Head
Diameter
0
.
8
1
m
m
0
.
9
4
m
m
1
.
2
7
m
m
1
.
4
0
m
m
1
.
4
2
m
m
1
.
5
2
m
m
1
.
8
7
5
m
m
1
.
9
0
m
m
2
.
0
0
m
m
2
.
1
7
5
m
m
2
.
3
0
m
m
2
.
3
5
m
m
2
.
4
m
m
2
.
5
m
m
2
.
6
m
m
Head
Height
0
.
2
8
m
m
0
.
3
8
m
m
0
.
4
1
m
m
0
.
5
m
m
0
.
5
1
m
m
0
.
6
m
m
0
.
7
m
m
0
.
7
2
m
m
0
.
7
6
m
m
0
.
8
m
m
0
.
8
4
m
m
0
.
8
6
m
m
0
.
8
8
m
m
0
.
9
m
m
0
.
9
5
m
m
Thread
Fit
M
e
t
r
i
c
C
l
a
s
s
4
g
6
g
M
e
t
r
i
c
C
l
a
s
s
4
h
M
e
t
r
i
c
C
l
a
s
s
4
H
M
e
t
r
i
c
C
l
a
s
s
4
H
5
H
M
e
t
r
i
c
C
l
a
s
s
4
H
6
H
M
e
t
r
i
c
C
l
a
s
s
5
g
6
g
M
e
t
r
i
c
C
l
a
s
s
5
H
M
e
t
r
i
c
C
l
a
s
s
6
g
M
e
t
r
i
c
C
l
a
s
s
6
G
M
e
t
r
i
c
C
l
a
s
s
6
h
M
e
t
r
i
c
C
l
a
s
s
6
H
M
e
t
r
i
c
C
l
a
s
s
7
H
M
e
t
r
i
c
C
l
a
s
s
8
g
M
e
t
r
i
c
I
n
t
e
r
f
e
r
e
n
c
e
S
k
6
M
e
t
r
i
c
T
r
a
p
e
z
o
i
d
a
l
C
l
a
s
s
7
e
Fastener
Strength
Grade/Class
A
S
T
M
G
r
a
d
e
B
7
A
S
T
M
G
r
a
d
e
B
8
M
A
S
T
M
G
r
a
d
e
2
H
I
S
O
C
l
a
s
s
8
.
8
I
S
O
C
l
a
s
s
1
0
.
9
I
S
O
C
l
a
s
s
1
2
.
9
I
S
O
C
l
a
s
s
0
4
I
S
O
C
l
a
s
s
5
I
S
O
C
l
a
s
s
6
I
S
O
C
l
a
s
s
8
I
S
O
C
l
a
s
s
1
0
I
S
O
C
l
a
s
s
1
2
S
A
E
G
r
a
d
e
2
S
A
E
G
r
a
d
e
5
S
A
E
G
r
a
d
e
8
Hardness
B
r
i
n
e
l
l
6
9
B
r
i
n
e
l
l
7
0
B
r
i
n
e
l
l
1
2
6
B
r
i
n
e
l
l
1
5
0
B
r
i
n
e
l
l
1
6
0
B
r
i
n
e
l
l
1
6
7
B
r
i
n
e
l
l
2
0
0
D
u
r
o
m
e
t
e
r
5
5
A
D
u
r
o
m
e
t
e
r
5
6
A
D
u
r
o
m
e
t
e
r
6
0
A
D
u
r
o
m
e
t
e
r
6
4
A
D
u
r
o
m
e
t
e
r
7
5
A
D
u
r
o
m
e
t
e
r
4
3
D
D
u
r
o
m
e
t
e
r
5
1
D
D
u
r
o
m
e
t
e
r
6
5
D
Tensile
Strength
Less
than
250
lbf
250
lbf
to
499
lbf
500
lbf
to
999
lbf
1,000
lbf
to
1,999
lbf
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
For
Tap
Type
Helical
Metric
Standard
(UN)
Forward
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39,378 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
2,849 products
Rounded
Head
Screws
Sit
just
above
the
surface
for
a
low
-
profile
finish
and
hold
tighter
than
flat
head
screws
3,348 products
Hex
Head
Screws
Used
with
nuts
to
create
a
stronger
joint
than
flat
and
rounded
screws
2,579 products
Flat
Head
Screws
Fit
in
countersunk
holes
for
a
flush
finish
2,070 products
Set
Screws
Exert
pressure
at
the
tip
to
hold
parts
in
place,
unlike
screws
that
hold
material
together
with
threads
1,813 products
Shoulder
Screws
Rotate
parts
around
the
cylinder
under
the
head
to
guide
and
align
them
during
installation
2,394 products
Tapping
Screws
Fasten
a
range
of
materials
together
without
needing
to
tap
the
hole
first
981 products
Thumb
Screws
Tighten
and
loosen
by
hand
without
the
need
for
tools
336 products
Fastener
Assortments
Stay
prepared
by
keeping
fasteners
in
common
sizes
and
materials
on
hand
3 products
Studs
Insert
into
holes
to
add
a
threaded
fastening
point
for
attaching
nuts
256 products
12
-
Point
Screws
12
contact
points
handle
more
torque
than
a
hex
head
while
a
flange
eliminates
the
need
for
a
washer
21 products
Carriage
Bolts
A
smooth
head
provides
a
finished
look
while
a
square
neck
keeps
the
bolt
in
place
when
using
a
nut
108 products
Captive
Panel
Screws
Secure
panels
and
enclosures
while
still
having
access
to
them
85 products
Elevator
Bolts
Create
a
flush
joint
to
allow
movement
in
tight
spaces
such
as
grain
elevators
and
belting
systems
34 products
Wood
Screws
Fasten
material
to
wood
or
pieces
of
wood
to
each
other
75 products
Hanger
Bolts
Suspend
pipe
and
other
fixtures
with
wire
or
cable
ties
24 products
Hex
Nuts
Handle
most
general
fastening
needs
1,108 products
Flange
Nuts
The
flange
distributes
pressure,
so
you
don't
need
a
washer
306 products
Locknuts
Hold
fasteners
in
place
to
prevent
loosening
from
vibration
443 products
Coupling
Nuts
Connect
and
extend
threaded
rods
183 products
Panel
Nuts
Extremely
thin
for
tight
spots
such
as
electrical
panels;
also
known
as
dress
nuts
7 products
Thumb
Nuts
Easy
to
tighten
and
loosen
by
hand
for
making
frequent
adjustments
144 products
Cap
Nuts
Cover
and
protect
threads
while
adding
a
finished
look;
also
known
as
acorn
nuts
69 products
Square
Nuts
Flat
sides
won’t
spin
in
channels
and
square
holes
46 products
Tamper
-
Resistant
Nuts
Hard
to
detach
without
special
tools
to
prevent
unwanted
removal
25 products
Slotted
Round
Nuts
Fasten
with
a
screwdriver
in
tight
spots
where
there's
no
room
for
a
wrench
7 products
Split
Nuts
Swivel
to
attach
at
any
point
on
a
threaded
rod
for
quick
installation
4 products
Socket
Nuts
Install
in
recessed
holes
and
tight
spots
where
a
wrench
won’t
fit;
also
known
as
Allen
nuts
22 products
Sealing
Nuts
Prevent
leaks
and
block
out
contaminants
with
a
rubber
seal
6 products
Threaded
Inserts
Create
new
threads
or
repair
stripped
threads
808 products
Clip
-
On
Nuts
Slide
onto
the
edge
of
thin
panels
to
create
a
fastening
point
24 products
Press
-
Fit
Nuts
Push
into
drilled
or
punched
holes
to
add
threads
to
thin
panels
106 products
Rivet
Nuts
Add
threads
to
thin
panels
with
access
from
only
one
side;
also
known
as
blind
inserts
89 products
Adhesive
-
Mount
Nuts
Attach
threads
to
material
that’s
too
thin
for
a
threaded
insert
20 products
Weld
Nuts
Weld
to
metal
surfaces
to
add
permanent
threads
64 products
Snap
-
In
Nuts
Push
into
square
holes
in
thin
materials
to
add
bolts
for
aligning
off
-
center
parts
10 products
Push
Nuts
Press
onto
threads
for
a
light
duty
hold
that’s
faster
to
install
than
typical
nuts
7 products
Washers
Reduce
stress
where
fasteners
attach
by
distributing
the
load
1,421 products
Lock
Washers
Resist
vibration
to
prevent
fasteners
from
loosening
744 products
Sealing
Washers
Prevent
fluids
from
leaking
around
fasteners
235 products
Leveling
Washers
Curved
or
tapered
to
compensate
for
uneven
mounting
surfaces
46 products
Wave
Washers
Act
like
springs
to
compensate
for
uneven
mounting
surfaces
and
to
damp
vibration
41 products
Cushioning
Washers
Cushion
joints
to
damp
vibration
and
protect
them
from
wear
7 products
Threaded
Rods
Insert
into
threaded
holes
to
connect
components
1,151 products
Quick
-
Release
Pins
Fasten
or
remove
components
on
equipment
with
a
spring
-
loaded
retaining
ball
277 products
Quick
-
Release
Pin
Receptacles
Secure
quick
-
release
pins
when
you
don’t
have
a
through
hole
10 products
Quick
-
Release
Pin
Retaining
Caps
Hold
quick
-
release
pins
in
holes
that
are
oversized
or
out
of
round
5 products
Dowel
Pins
Align
parts
before
assembly
or
use
as
a
pivot,
shaft,
or
hinge
to
join
moving
components
1,152 products
Spring
Pins
Squeeze
and
insert
into
tight
holes
to
hold
parts
in
place
with
tension
541 products
Clevis
Pins
Secure
parts
in
place
and
lock
with
a
cotter
pin
or
retaining
ring
137 products
Captive
Pins
Press
into
holes
in
thin
materials
like
panels
and
circuit
boards
to
permanently
join
or
align
them
44 products
Cotter
Pins
Secure
the
ends
of
clevis
pins
and
shafts
to
keep
components
in
place
192 products
Taper
Pins
Fit
snugly
into
tapered
holes
to
secure,
position,
and
align
components
232 products
Standoffs
Threaded
to
separate
or
connect
parts
as
well
as
position
components
in
assemblies
1,395 products
Spacers
Unthreaded
to
create
space
between
two
surfaces
or
objects,
often
to
align
them
1,041 products
Retaining
Rings
Hold
components
on
a
shaft
961 products
Thread
Adapters
Join
threads
of
a
different
type,
size,
and
gender
2,347 products
Rivets
Join
materials
together
permanently,
especially
when
too
thin
or
fragile
to
fasten
with
screws
90 products
Binding
Barrels
and
Screws
Thread
together
for
a
low
-
profile
fastener
70 products
Shims
Level,
align,
and
adjust
spacing
on
fasteners,
shafts,
and
machine
components
826 products
Shim
Stock
Cut
into
custom
shapes
for
leveling
and
aligning
fasteners,
machinery
components,
and
more
20 products
Anchors
Secure
structural
joints
in
concrete,
brick,
and
other
building
materials
4 products
Unthreaded
Inserts
Reinforce,
align,
and
adjust
joints
as
you
tighten
a
fastener
18 products
Push
Nut
Installation
Tools
Press
nuts
and
retaining
rings
onto
threaded
fasteners
and
shafts
13 products
Rivet
Nut
Tools
Install
rivet
nuts
15 products
Power Transmission
Bearing
Nuts
Hold
bearings,
bushings,
pulleys,
and
gears
in
place
on
threaded
shafts
and
spindles
173 products
Bearing
Lock
Washers
Lock
bearing
nuts
in
place
to
prevent
loosening
due
to
vibration
56 products
Shock
Absorber
Mounting
Nuts
Secure
shock
absorbers
after
threading
them
into
mounting
blocks
11 products
Lead
Screws
and
Nuts
Components
travel
along
a
screw
with
broad,
square
threads
to
clamp
and
lift
heavy
loads
208 products
Connecting
Rods
Use
with
rod
ends
and
swivel
joints
to
link
components
in
push/pull
assemblies
263 products
Rod
End
Nuts
Attach
to
rods,
pipe,
and
tubing
to
make
pivot
and
hinge
points
8 products
Rod
Ends
Use
with
connecting
rods
to
support
loads
and
control
steering,
tensioning,
or
pivoting
motion
324 products
Ball
Screws
and
Nuts
Internal
ball
bearings
roll
on
screws
for
low
friction
when
moving
components
at
high
speeds
48 products
Ball
Screw/Splines
Transmit
rotary
power,
move
loads
along
the
shaft,
or
do
both
at
once
3 products
Roller
Screws
and
Nuts
More
contact
points
to
move
heavier
loads
than
ball
and
lead
screw
assemblies
8 products
Lead
and
Ball
Screw
End
Supports
Brace
and
secure
the
ends
of
lead
screws
and
ball
screws
3 products
Building and Machinery Hardware
T
-
Slotted
Framing
and
Fittings
The
most
versatile
system,
attach
fittings
along
the
continuous
slots
to
build
virtually
anything
398 products
Strut
Channel
Framing
and
Fittings
Secure
fittings
in
the
U
-
shaped
channel
to
route
conduit
and
pipe
or
build
other
structures
57 products
Knobs
Position,
tighten,
and
secure
fixtures
and
equipment
146 products
Cam
Handles
For
fast
clamping,
push
down
on
the
handle
to
draw
two
parts
together
47 products
Machine
Handles
Arms
give
you
extra
leverage
to
secure
and
position
jigs,
fixtures,
and
other
equipment
4 products
Handle
Nuts
Attach
to
threaded
shafts
to
quickly
turn
the
shafts
by
hand
8 products
Leveling
Mount
Inserts
Slip
onto
equipment
and
furniture
to
add
threaded
-
stud
leveling
feet
16 products
Material Handling
Loop
Clamps
Hold
pipe
snug
against
the
mounting
surface
to
prevent
movement
that
may
cause
breakage
478 products
U
-
Bolts
Anchor
heavy
pipe,
tube,
and
conduit;
stronger
than
routing
clamps
and
hangers
691 products
Hoist
Rings
Pivot
to
resist
stress
that
would
bend
or
break
an
eyebolt
when
lifting
at
an
angle
129 products
Eyebolts
Route
rope
through
the
loop
or
attach
hooks
and
shackles
for
lifting
101 products
Eye
Nuts
Pair
with
bolts
or
threaded
rod
to
lift
and
hang
components
42 products
Cable
Holders
Mount
to
a
surface
to
secure
and
route
cable
6 products
Fabricating and Machining
Setup
Studs
Secure
setup
clamps
and
fixtures
to
your
machine
table
or
assemble
heavy
machines
311 products
T
-
Slot
Bolts
Secure
clamps
and
workpieces
to
machine
tables
with
quicker
setup
than
a
T
-
slot
nut
and
stud
18 products
T
-
Slot
Nuts
Combine
with
setup
studs
to
mount
fixtures
to
machine
tables
73 products
T
-
Slot
Covers
Snap
into
T
-
slots
to
block
chips,
debris,
and
small
parts
from
falling
in
6 products
T
-
Slot
Cleaners
Scrape
debris
out
of
machine
table
T
-
slots
2 products
T
-
Slot
Nut
and
Setup
Stud
Kits
Mount
fixtures
of
different
sizes
to
your
machine
table
9 products
Drill
Bushings
Fit
in
holes
to
guide
drill
bits
and
other
cutting
tools
for
precise
and
repeatable
holes
and
cuts
1,051 products
Clamps
Hold
workpieces
securely
in
place
93 products
Thread
Repair
Tools
Restore
lengths
of
rusted
and
damaged
threads
on
screws,
pipe,
or
conduit
4 products
Ejector
Pins
Push
finished
parts
out
of
molds
136 products
Core
Pins
Add
to
molds
and
pour
in
plastic
to
form
holes
in
finished
parts
112 products
Lathe
Chuck
Jaw
Nuts
Secure
jaws
to
a
CNC
lathe
chuck
9 products
Fluid Handling
Hose
and
Hose
Fittings
Flexible
and
stronger
than
tubing;
often
used
to
convey
liquids
and
gases
under
pressure
4 products
Pipe
and
Pipe
Fittings
Rigid
and
thick
walled
for
distributing
liquids
and
gases
through
your
facility
24 products
Tube
and
Tube
Fittings
Flexible
or
rigid
with
thinner
walls
than
pipe
for
carrying
liquids
and
gases
in
short
runs
91 products
Electrical
Conduit
and
Conduit
Fittings
Protect
wiring
from
impact
and
the
environment
in
runs
indoors,
outdoors,
and
underground
32 products
DIN
Rail
Mounting
Adapters
Attach
to
components
not
made
for
DIN
rail
and
clip
on
to
install
10 products
Communication
Reference
Charts
Check
decimal
equivalents,
drill
sizes,
or
specifications
for
socket
screws
1 product
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)