Specification Brand : Star USA BulletPoint1 : Knurled Knob Size: Thread Size: M4 (0.7mm Pitch); Thread Length: 12mm / 0.47"; Round Head Diameter: 13mm / 0.51"; Total Length: 18mm / 0.71"; Color: White BulletPoint2 : Hand Knob with Stud: Zinc plated carbon steel threaded studs on knurled knobs ensure durability, strength, functionality and wear resistance. The tightly-in metal threaded stud can securely join components together, easy to install, suitable for various applications. BulletPoint3 : Features: The knurled texture on the surface provides better grip, making it easier to tighten or loosen the knob. The threads are neat and clear, the force is even and deep, not easy to slip, and there are no burrs. BulletPoint4 : Applications: Knurled knobs are commonly used in applications that require frequent adjustments or tightening. Widely used in lathes, drill presses, sawing machines, packaging and woodworking machinery, printing, instrument and industrial equipment, and fixtures. BulletPoint5 : Tips: Always tighten the knurled knob securely to prevent any movement of the fixed assembly. Do not over-tighten the knob as this may damage or strip the threads in the mating assembly. Replace the knob if necessary. Color : White ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 745128325450 ExternallyAssignedProductIdentifier2 : 0745128325450 FinishType : Gloss IncludedComponents : Screw IncludedComponents1 : Knob IncludedComponents2 : Screw ItemName : Circular Pitch Knurls - "O" Series 1.0 Dia. x 3/8 Width x 5/16" Hole Dia. / 25 TPI / Male Diamond ItemPackageDimensions_Height : 0.59 inches ItemPackageDimensions_Length : 3.54 inches ItemPackageDimensions_Width : 2.36 inches ItemPackageQuantity : 30 ItemShape : Round ItemTypeKeyword : knurled-knobs Manufacturer : Star USA Material1 : Carbon Steel Material2 : Plastic MetalType : Carbon Steel ModelNumber : a23100900ux0715 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : 9782509 ProductDescription : HIGH SPEED Circular Pitch Knurls are made to extremely high standards from the finest materials available. Knurls are individually hob cut and lapped to a smooth hard finish to give longer life and impart a smooth clean surface to the knurled part. ProductSiteLaunchDate : 2011-09-07T18:08:38.175Z Size : M4 x 12mm Style : Knurled Knobs SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 30