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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
Slotted Flat Head Knurled Thumb Captive Screws are specialized fasteners designed for easy, tool-free use and frequent access. They feature a flat head that sits flush with the surface, creating a smooth, low-profile finish. The slotted design on the head allows for optional tightening with a flathead screwdriver, giving more flexibility for use.
Fastenmetal custom captive screws and other fasteners from drawings.Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and bespoke parts made to drawings. Minimum order quantities apply.
| Unit:mm | ||||||||
| Specification(d) | thread distance(P) | ds | dk | k | n | t | b | |
| max | min | |||||||
| M2 | 0.4 | 1.5 | 1.4 | 4.82-5 | 3.9-4 | 0.86-1 | 0.7 | 4 |
| M2.5 | 0.45 | 1.7 | 1.6 | 4.82-5 | 3.9-4 | 0.86-1 | 0.7 | 4 |
| M3 | 0.5 | 1.95 | 1.85 | 4.82-5 | 4.4-4.5 | 0.86-1 | 0.7 | 4 |
| M4 | 0.7 | 2.75 | 2.65 | 7.78-8 | 6.35-6.5 | 1.26-1.51 | 1 | 6 |
| M5 | 0.8 | 3.4 | 3.3 | 8.78-9 | 6.9-7 | 1.26-1.51 | 1.2 | 8 |
| M6 | 1 | 4.4 | 4.3 | 10.73-11 | 9.8-10 | 1.66-1.91 | 1.4 | 10 |
| M8 | 1.25 | 5.4 | 5.3 | 13.73-14 | 11.7-12 | 2.06-2.31 | 1.9 | 12 |
| Size not listed? Please inqury 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
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
Slotted Raised Countersunk Head Captive Screws are screws with a slotted drive and a raised, slightly rounded head that sits flush with or slightly above the surface when installed. The countersunk design allows the screw to sit securely in a tapered hole, while the captive feature keeps the screw attached to the panel or assembly even when loosened. For quotes,inquiries,or custom 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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