Slotted spring pins, DIN1481 / ISO8752 (Heavy Duty),
AISI420 / AISI302 / AISI304, surface with Zinc-coating or Blackening

Sinobronze “spring pins” (same as “tension pins “or “slotted spring pins” or "C pins") are a mechanical fastener that secures the position of two or more parts of a machine relative to each other.
Spring pins have a body diameter which is larger than the hole diameter, and a chamfer on either one or both ends to facilitate starting the pin into the hole. The spring action of the pin allows it to compress as it assumes the diameter of the hole. The force exerted by the pin against the hole wall retains it in the hole, therefore a spring pin is considered a self-retaining fastener.
Spring pins are used as locking devices, positioning points, anti‑chafing surfaces, shafts, or sleeves for wiring.

•  They do not damage host material;
•  Their elastic nature allows them to fit into holes without reaming;
•  Spring pins can be doubled up to increase shear strength;
•  Functional in both blind and through hole applications;
•  Easily installed using a hammer or automated equipment.

Sinobronze spring pins are offered in a variety of surface treatment. The most popular finishing are as followings for our customer's options:

• Tin plating

• Zinc plating

• Phosphate coating