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 DriveSystem : Spade ExteriorFinish : Plastic ExternallyAssignedProductIdentifier1 : 763684724623 ExternallyAssignedProductIdentifier2 : 0763684724623 GpsrSafetyAttestation : 1 GradeRating : 18-8 ItemName : uxcell M4 x 20mm Thumb Screw Bolt Hand Driven Spade Nylon Plastic Screws Metric Thread for RC Model Aircraft 5 Pcs ItemPackageDimensions_Height : 12.4 centimeters ItemPackageDimensions_Length : 1.8 centimeters ItemPackageDimensions_Width : 9.5 centimeters ItemPackageQuantity : 2 ItemTypeKeyword : thumb-screws Manufacturer : uxcell ManufacturerGrade : Grade 18 8 Material : Nylon Material1 : Stainless Steel Material2 : Acetal MeasurementSystem : Metric MetalType : Plastic,Nylon MetalType1 : Nickel MetalType2 : Alloy Steel ModelNumber : a19021200ux1093 NumberOfItems : 25 NumberOfPieces : 5 PartNumber : a19021200ux1093 ProductDescription : M4 x 20mm Nylon Thumb Screw Thread Diameter: M4(Metric) Length of the Thread: 20mm Rod Length: 20mm Overall Length: 30mm Materials: Nylon Thumb Screw Type: Spade Application: Fastener for RC Model Airplane, Car, Boat Package Content: 5 Pcs M4 x 20mm Nylon Thumb Screw