Specification Brand : uxcell BulletPoint1 : Head Style: Round Knurled Head; Material: Carbon Steel; Package Content: 5 x Knurled Thumb Screws BulletPoint2 : Product Name: Knurled Thumb Screws; Thread Size: M4 x 6mm/ 0.16" x 0.24" (D*L); Weight: 25g BulletPoint3 : Coating: Galvanized/Zinc Plated; Main Color: Silver Tone BulletPoint4 : Thread Pitch: 0.7mm; Total Length: 15mm/ 0.6" BulletPoint5 : Thread Style: Fully Thread; Knurled Head Diameter: 12mm/ 0.47" Color : Silver DriveSystem : Slotted ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 602451725930 ExternallyAssignedProductIdentifier2 : 0602451725930 ItemName : uxcell M4x6mm Carbon Steel Hand Tighten Flat Knurled Head Thumb Screws Fasteners 5 Pcs ItemPackageDimensions_Height : 13 centimeters ItemPackageDimensions_Length : 0.8 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : thumb-screws Manufacturer : uxcell Material : Carbon Steel MeasurementSystem : Metric MeasurementSystem1 : Imperial MeasurementSystem2 : Metric MetalType : Carbon Steel MetalType1 : Nickel MetalType2 : Alloy Steel ModelNumber : a16050300ux0945 NumberOfItems : 20 PartNumber : a16050300ux0945 ProductDescription : M4x6mm Round thumb screw with flat knurled head style. Knurled head provides extra grip for manual tightening. Usually found on thumb screws, a knurled surface on the head gives a better gripping surface, making it easier to tighten or loosen fasteners manually. Thumb screws are designed to be tightened and loosened by hand. Tools not necessary for tightening or loosening Knurled Thumb Screws are installed with your fingers and are used to hold light covers in place and other ornamental products.