Welcome to WordPress. This is your first post. Edit or delete it, then start writing!
Shoulder Bolt
Everything You Need to Know About Shoulder Bolts: Stainless Steel vs. Alloy Steel
When it comes to precision fastening components, Shoulder Bolts — often known as stripper bolts — play a vital role in mechanical assemblies. At Milan Auto, we manufacture high-quality shoulder bolts that meet leading international standards like ISO 7379 and ANSI B18.3, ensuring unmatched quality and performance.
When it comes to precision fastening components, Shoulder Bolts — often . But when choosing the right shoulder bolt, one important decision must be made: Stainless Steel or Alloy Steel?Let’s explore the differences..
What is a Shoulder Bolt?
A Shoulder Bolt is a unique type of fastener that features a precisely machined, unthreaded shoulder between the head and the threaded portion. This shoulder acts as a robust bearing surface, allowing for accurate alignment, movement, or rotation between assembled parts.
Shoulder bolts are essential in applications such as:- Mold bases
- Die sets
- Robotics
- Automation equipment
- Medical devices
- Aerospace assemblies
At Milan Auto, our shoulder bolts are engineered to precise tolerances and surface finishes, ensuring high performance under demanding conditions.
Stainless Steel Shoulder Bolts: Stainless Steel (SS) shoulder bolts are a preferred choice where corrosion resistance, hygiene, or a clean appearance is important. We manufacture shoulder bolts in stainless steel grades like AISI 303, AISI 304, and AISI 316, depending on application needs.
Benefits of Stainless Steel Shoulder Bolts:
- Excellent corrosion resistance
- Long-lasting in moisture, chemical, and outdoor environments
- Low maintenance and visually appealing
Industries such as food processing, marine, and medical rely heavily on stainless steel shoulder bolts for reliable, rust-free performance.
Alloy Steel Shoulder Bolts: At Milan Auto, our Alloy Steel Shoulder Bolts are manufactured exclusively in AISI 4140 material — a high-strength, versatile alloy steel known for its excellent mechanical properties. Why AISI 4140 for Shoulder Bolts?- High tensile strength and toughness
- Outstanding wear and fatigue resistance
- Superior performance under heavy loads and impact
- Good machinability and heat treatability
Benefits of AISI 4140 Alloy Steel Shoulder Bolts:
- Greater strength than stainless steel
- Excellent load-bearing capacity
- Ideal for high-stress mechanical environments
Important: Unlike our dowel pins, for shoulder bolts, we do not use 52100, SUJ2, or 100Cr6.
For alloy steel shoulder bolts, we strictly use AISI 4140 at Milan Auto.
International Standards We Follow:
ISO 7379: Metric shoulder bolts with precise dimensional and tolerance specifications for consistent performance.
ANSI B18.3: Inch-series shoulder bolts widely used in North America, covering all critical dimensions and mechanical requirements.
Manufacturing to these standards ensures global compatibility and superior quality.
Why Milan Auto?
Materials: Stainless Steel (303, 304, 316) and Alloy Steel (AISI 4140) Global Compliance: ISO 7379 and ANSI B18.3 standards
Custom Options: Special shoulder lengths, thread sizes, and coatings
No Minimum Order Quantity (MOQ): We support small and large orders
Strict Quality Checks: Dimensional accuracy, hardness, and surface finish
Reliable Delivery: On-time shipments, both domestic and international
Conclusion
Choosing between stainless steel and alloy steel shoulder bolts depends on your application needs.If corrosion resistance is your priority, stainless steel is the best fit.
If strength, durability, and high-load performance are critical, AISI 4140 alloy steel shoulder bolts are the clear choice. At Milan Auto, we combine material excellence with precision manufacturing to deliver shoulder bolts you can trust.
