#4-40
Hex
Standoff
Screw
-
316
Stainless
Steel
-
Electropolished
Premium
fasteners
for
medical,
marine,
and
demanding
industrial
applications
Product
Attributes
Attribute
|
Value
|
Product
Application
|
Marine
&
Offshore
Electronics
|
Thread
|
Male-female
|
Lead
Time
|
15~20
working
days
|
Finish
|
Electropolishing
(Ra
<
0.4
µm,
Superior
finish)
|
Material
|
A4-80
/
316
Stainless
Steel
|
Tolerance
|
+/-
0.05mm
|
Corrosion
Resistance
|
Excellent
for
Marine
(C5-M)
&
Chemical
environments
|
Strength
|
High
|
Specification
|
ISO
|
Quantity
|
Pack
of
1000
|
Type
|
Standoff
Screws
|
Samples
|
Free
samples
available
|
Easy
To
Install
|
Yes
|
Total
Length
|
12
mm
|
Product
Description
Engineered
for
the
most
demanding
environments,
our
premium
#4-40
Hex
Standoff
Screws
are
manufactured
from
A4/316
stainless
steel
and
feature
an
electropolished
finish.
This
combination
provides
exceptional
resistance
to
harsh
chemicals,
frequent
sterilization,
salt
spray,
and
corrosive
atmospheres.
Technical
Specifications
Specification
|
Value
|
Thread
Standard
|
#4-40
UNF
|
Thread
Diameter
|
Major
Dia:
~0.112"
/
2.84mm
|
Hex
Size
(AF)
|
4.75
mm
(3/16")
or
Custom
|
Total
Length
(L)
|
12
mm
(Common,
Fully
Customizable)
|
Male
Thread
Length
(L_m)
|
7
mm
(Common,
Fully
Customizable)
|
Female
Thread
Depth
(L_f)
|
~5
mm
(L
-
L_m,
Fully
Customizable)
|
Material
|
A4-80
/
316
Stainless
Steel
|
Surface
Treatment
|
Electropolishing
(Ra
<
0.4
µm,
Superior
finish)
|
Corrosion
Resistance
|
Excellent
for
Marine
(C5-M)
&
Chemical
environments
|
Customization
|
All
dimensions
and
thread
combinations
available
|
Primary
Uses
&
Applications
-
Medical
Devices:
Assembly
of
surgical
instruments,
diagnostic
equipment,
and
implantable
device
packaging
where
cleanliness
and
corrosion
resistance
are
paramount.
-
Laboratory
&
Analytical
Equipment:
Spacing
components
in
spectrometers,
DNA
sequencers,
and
automated
fluid
handling
systems
exposed
to
chemicals.
-
Marine
&
Offshore
Electronics:
Used
in
navigation
systems,
underwater
sensors,
and
communication
devices
on
boats
and
platforms.
-
Food
&
Beverage
Processing:
Equipment
assembly
where
cleanability
and
resistance
to
corrosive
cleaning
agents
are
required.
-
Aerospace
&
Defense:
Avionics
and
critical
electronic
systems
where
reliability
in
harsh
conditions
is
essential.
How
to
Use
-
Clean
Environment:
For
medical
and
high-purity
applications,
install
in
a
controlled,
clean
environment.
-
Installation:
Use
a
clean,
3/16
inch
hex
wrench.
Carefully
screw
the
male
thread
into
the
receiving
tapped
hole.
The
electropolished
finish
reduces
friction.
-
Final
Assembly:
Use
a
matching
#4-40
stainless
steel
screw
to
secure
the
component
to
the
female
thread
of
the
standoff.
-
Torque
Control:
For
consistent
and
reliable
results,
especially
in
critical
applications,
use
a
torque
screwdriver
set
to
the
recommended
value
for
#4-40
screws
in
stainless
steel.
-
Custom
Solutions:
We
can
work
with
you
to
create
standoffs
with
specific
lengths
and
thread
depths
to
solve
unique
design
challenges
in
your
product.
Our
Advantages
-
More
than
20
years
of
screw
production
experience
and
non-standard
screw
custom
development
experience,
providing
cost-effective
solutions
for
your
fastener
supply
chain.
-
Precise
production
equipment
from
Taiwan
to
manufacture
precision
screws
and
hardware
accessories,
with
free
sample
testing
for
compatibility
verification.
-
Complete
quality
management
system
with
multiple
strict
monitoring
checks
for
each
batch
of
products.
-
Dedicated
account
management
for
seamless
collaboration
and
system-supporting
services.
Support
and
Services
Our
team
of
knowledgeable
professionals
provides
comprehensive
support
for
all
aspects
of
our
hex
standoff
screws,
including:
-
Selection
advice
to
ensure
the
right
type
and
size
for
your
project
-
Guidance
on
proper
installation
techniques
-
Detailed
product
specifications
and
material
safety
data
sheets
-
Step-by-step
installation
guides
and
troubleshooting
assistance
-
Maintenance
tips
and
best
practices
to
extend
product
life
Packing
and
Shipping
-
Packaged
in
durable,
moisture-resistant
plastic
bags
within
sturdy
cardboard
boxes
-
Secure
packing
materials
to
prevent
movement
during
transit
-
Clear
labeling
with
product
information
for
easy
identification
-
Palletized
and
shrink-wrapped
for
bulk
orders
-
Reliable
courier
services
with
tracking
information
provided
Custom
Solutions
Our
factory
accepts
customized
drawings
and
specifications.
Contact
us
to
discuss
your
specific
requirements
for
technical
certifications
or
special
parameters.