Captive Screw | Stainless Steel Thumb Screw for Server Rack Panel

The captive screw is precisely composed of four key components: the hand-twist sleeve, the screw, the spring, and the riveting sleeve. The hand-twist sleeve is typically made of aluminum and adorned with a straight-knurled pattern, combining aesthetics with functionality. The screw, used for fastening panels, is often crafted from carbon steel or stainless steel, with its head designed in a cross-slot or flat-slot style to facilitate tool tightening. The spring not only enables the entire assembly to extend and retract freely without detachment but also provides critical support for the riveting of the riveting sleeve.

DESCRIPTION

PRODUCT Tags

Characteristics of the PF11 Captive Screw:

Material: Features a precision-engineered combination of an aluminum hand-wheel sleeve, a carbon steel press-in collar, a stainless steel screw, and a stainless steel spring.

Design: Incorporates a flanged design with a knurled pattern on the hand-wheel sleeve, making it ideally suited for panels over 1 mm in thickness.

Marking Method for Captive Screws

The designation typically consists of four parts: screw type, thread code, length code, and plating code. For example, in the designation.

PF11-M3-2-ZI:
PF11 represents the screw type,
M3 indicates an M3 thread,
The length code and plating code may vary depending on the specific product.

Parameter

Captive Screw | Stainless Steel Thumb Screw for Server Rack Panel

Application Scenarios

In the Field of Mechanical Equipment
In automotive manufacturing, these screws are commonly used in critical components such as the body, chassis, transmission, and engine. Their self-locking feature ensures stability even under complex operating conditions.

Construction and Installation
In building construction, captive screws are often employed to secure doors, windows, ceilings, and other parts requiring long-term stability. Additionally, they are widely used in both interior and exterior installation projects, such as metal curtain walls and lightweight partitions.