Specification Brand : uxcell BulletPoint1 : Metric Size. M4 thread diameter, 20mm length in thread. 30mm overall length, 20mm length of the rod. BulletPoint2 : Made of high grade Nylon. These Nylon Thumb Screws offer insulation(non-conductivity), corrosion resistance and chemical stability. BulletPoint3 : Precison. Fine plastics injection ensures an accurate size and perfect shape in these thumb screw bolt. BulletPoint4 : Easy Installation. Ergonomic design spade handle makes the tweaking work much more easier, and tighter. BulletPoint5 : Application. UXCELL was dedicated to providing various thumb screws for your RC Model Airplane, Aircraft, Boat or Car. Color : Black ExteriorFinish : Plastic ItemName : uxcell M4 x 20mm Thumb Screw Bolt with T Nut Hand Driven Spade Nylon Plastic Screws Metric Thread for RC Model Aircraft 2 Pcs ItemPackageDimensions_Height : 12.954 centimeters ItemPackageDimensions_Length : 0.254 centimeters ItemPackageDimensions_Width : 9.144 centimeters ItemTypeKeyword : thumb-screws Manufacturer : uxcell ManufacturerGrade : Grade M4 Material : Nylon MetalType : Plastic,Nylon ModelNumber : a19021200ux1109 NumberOfPieces : 2 PartNumber : a19021200ux1109 ProductDescription : M4 x 20mm Nylon Thumb Screw with T Nut Thread Diameter: M4(Metric) Length of the Thread: 20mm Rod Length: 20mm Overall Length: 30mm Materials: Nylon Thumb Screw Type: Spade T Nut: 3 Pins, 6mm Height. Fit M4 Thread Application: Fastener for RC Model Airplane, Car, Boat Package Content: 2 Pcs M4 x 20mm Nylon Thumb Screw with T Nut