How To Choose The Best Material For Ball Lock Pin
author: Lucia Liu
2025-11-10
How To Choose The Best Material For Ball Lock Pin
Ball lock pin is a indexing element for connecting parts. It's also called quick release pin, detent pin, locking pin, safety pin and rapid release pin. The balls at the pin end function as positive ball locking. The positive ball lock is retracted until releasing the button on the top. It's widely used in fixture, aerospace, cnc machines, robotics, medical equipment and line array speaker system. As the different materials show various characteristics. We need to be careful when choosing the materials for the ball locking pins.
The Materials We Use For The Pins
Button: 6063 Aluminum alloy with blue anodized surface treatment
Handle: Die-Cast Aluminum with an electrophoretic surface treatment
Pin Body: Stainless Steel 303/304/316/17-4ph
Balls: Stainless Steel 303/304/316/17-4ph
How To Choose Stainless Steel For The Pin
The stainless steel we use is certified by RoHS and Tuvland. We can guarantee you the high quality of anti-rust, long last service, durable shear strength.
You may select materials according to the following requirements:
1. For marine and high corrosion resistance applications, typically use 316 grade.
2. For high shear resistance requirements, use 17-4 pH grade.
3. For cost-effective solutions, use stainless steel 303 grade.
4. For certain requirements, use stainless steel 304 grade.
1. For marine and high corrosion resistance applications, typically use 316 grade.
2. For high shear resistance requirements, use 17-4 pH grade.
3. For cost-effective solutions, use stainless steel 303 grade.
4. For certain requirements, use stainless steel 304 grade.
For Marine Applications, Stainless Steel 316 is the best material for the scenario
Marine air, seawater, and salt spray contain high concentrations of chloride ions (Cl⁻).
Common stainless steel grades (such as SS 304) experience pitting and crevice corrosion in chlorine-containing environments, leading to surface rust spots or even perforation.
In contrast, 316 contains 2–3% molybdenum, enabling it to form a more stable molybdenum oxide protective layer that effectively inhibits the ability of chloride ions to damage the oxide film.
Common stainless steel grades (such as SS 304) experience pitting and crevice corrosion in chlorine-containing environments, leading to surface rust spots or even perforation.
In contrast, 316 contains 2–3% molybdenum, enabling it to form a more stable molybdenum oxide protective layer that effectively inhibits the ability of chloride ions to damage the oxide film.
For frequently Operated CNC Equipment
We recommend stainless steel 17-4ph. This type of stainless steel features strong shear resistance. It prevent the pin breaking while the machine is processing. The high shear strength of 17-4PH stainless steel stems from its precipitation-hardening martensitic structure, which incorporates copper (Cu) and niobium (Nb) elements. Following solution treatment and aging heat treatment, numerous fine Cu-rich precipitation phases precipitate. These nanoscale particles effectively impede dislocation movement, thereby significantly enhancing the material's yield strength, tensile strength, and shear strength.
FAQ
Q: What type of handle design do you provide?
A: We have L handle, D Ring, T handle, push button, recessed button and shoulder-style alignment
Q: How long does it take to make quick release ball lock pin?
A: It depends on your quantity. It usually takes 10-15 days.
Q: What size do you offer for the rapid disconnect pin?
A: We have basic common sizes such as in diameter from 1/4“ (6.35 mm) to 1/2” (12.7 mm), with effective lengths typically spanning 1“–8” (25–200 mm)
Free samples are in stock, come send us an email and get a free quote for Mocayo durable and precise locking detent quick release pin!
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