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Flat Head Phillips Captive Screws are specialized fasteners designed to be securely held in place while allowing for easy installation and removal. They feature a flat, countersunk head with a Phillips drive, which provides a better grip and prevents stripping. The “captive” aspect means they won’t fall out when unscrewed, making them ideal for applications where maintaining the screw’s position is crucial, such as in machinery or electronic devices.For quotes,inquiries,or custom captive screws request, please feel free to click the button”get a free quote”.
Material: Stainless Steel 304,316, brass
Standard:GB819
Finish: As finished
Size:M2-M8
Strength Grade:Grade8.9,10.8
Captive screws are designed to prevent loosening by incorporating a smaller diameter rod that holds the screw in place on the connecting component (or through a retaining ring or clip). The screw itself does not have inherent anti-loosening features; instead, its captive function relies on the method of connection to the part being fastened. This is achieved by securing the smaller diameter rod of the screw in the mounting hole of the connecting component to prevent it from falling out. Flat Head Phillips Captive Screws are cylindrical fasteners with a flat top, typically featuring a Phillips drive for turning. Their specifications are usually indicated by diameter and length, such as M210 or M320. Here, “M” represents the thread diameter, while the numbers indicate different thread specifications and lengths. Common standards for Flat Head Phillips Screws include GB818 and ISO7048.
| specification(d) | thread distance | DK | head degree | K | ds | b | |
| P | max | min | |||||
| M2 | 0.4 | 3.8 | 3.5 | 90° | 1.2 | 1.5 | 3 |
| M2.5 | 0.45 | 4.7 | 4.4 | 90° | 1.5 | 1.9 | 3.5 |
| M3 | 0.5 | 5.5 | 5.2 | 90° | 1.7 | 2.15 | 4 |
| M4 | 0.7 | 8.4 | 8.04 | 90° | 2.7 | 2.9 | 6 |
| M5 | 0.8 | 9.3 | 8.94 | 90° | 2.7 | 3.8 | 8 |
| M6 | 1 | 11.3 | 10.87 | 90° | 3.3 | 4.6 | 10 |
| M8 | 1.25 | 15.8 | 15.37 | 90° | 4.65 | 6 | 12 |
| Size not listed? Please inquiry us. | |||||||
Captive Screws has many names in English, such as “spring screw” or “thumb screw.” This type of screw can be riveted onto an iron plate and can be freely screwed in and out. However, the entire component remains securely embedded in the panel without detaching from it, which is why it’s also called a “captive screw.”For quotes,inquiries,or custom screws request, please feel free to click the button”get a free quote”.
Material: Stainless Steel 304,316, brass
Standard:DIN
Finish: As finished
Size:M4-M16
Strength Grade:Grade8.9,10.8
Round head socket countersunk captive screws are fasteners designed to provide a clean, flush finish when installed. They have a rounded head that allows for a smooth surface, while the socket drive enables easy installation and removal with a compatible tool. The countersunk design ensures they sit flush with the material, preventing snagging or protrusion. Their captive feature keeps them attached to the assembly, making them ideal for applications where parts might be frequently removed or adjusted. For quotes,inquiries,or custom screws request, please feel free to click the button”get a free quote”.
Material: Stainless Steel 304,316, brass
Standard:DIN
Finish: As finished
Size:M2-M8
Strength Grade:Grade8.9,10.8
Slotted Flat Head Knurled Thumb Captive Screws are hand-tightened screws with a flat, slotted head and textured sides for easy grip. They stay attached even when unscrewed, making them ideal for quick access panels.For quotes,inquiries,or custom screws request, please feel free to click the button”get a free quote”.
Material: Stainless Steel 304,316, brass
Standard:DIN
Finish: As finished
Size:M2-M8
Strength Grade:Grade8.9,10.8
Knurled socket countersunk cylinder head captive screws are used in various industries where repeated access to components is necessary, and the screws must stay attached to prevent loss. For quotes,inquiries,or custom captive screws and other fasteners request, please feel free to click the button”get a free quote”.
Material: Stainless Steel 304,316, brass
Standard:DIN
Finish: As finished
Size:M2-M8
Strength Grade:Grade8.9,10.8
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