Specification Brand : uxcell BulletPoint : Metric Class 10 Zinc Yellow Nylon Insert Flanged Locknuts M12 x 1.75 x 18 mm W x 16.1 mm H BulletPoint1 : [THREADED]: Thread Size: M4; Pitch: 0.7mm; Thread Coverage: Full BulletPoint2 : [SIZE] - 0.28" (7mm) width across flat, 0.24" (6mm) height; 0.39" (10mm) flange diameter. BulletPoint3 : [MATERIAL]: Made of 304 stainless steel, rust-resistant, and durable to use. BulletPoint4 : [FEATURE]: With a nylon insert, these lock nuts greatly reduce loosening under vibrations and torque and the flange design allows the nut to span larger holes than a standard nylon insert stop nut. BulletPoint5 : [GREAT REPLACEMENT] - Great replacement for industrial and construction fasteners, also can be an important accessory in your daily life. Color : Silver Tone DriveSystem : External Hex ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier1 : 740224038235 ExternallyAssignedProductIdentifier2 : 0740224038235 FinishType : Plain Finish GpsrSafetyAttestation : 1 GradeRating : commercial ItemName : uxcell M4 Nylon Insert Hex Lock Nuts with Flange, 304 Stainless Steel, Plain Finish, 25pcs ItemPackageDimensions_Height : 13.97 centimeters ItemPackageDimensions_Length : 2.54 centimeters ItemPackageDimensions_Width : 10.16 centimeters ItemPackageQuantity : 25 ItemTypeKeyword : hardware-locknuts Manufacturer : uxcell Material : Stainless Steel Material1 : Plastic Material2 : Brass MeasurementSystem : Metric MetalType : Stainless Steel ModelNumber : a21111000ux0069 NumberOfItems : 1 NumberOfPieces : 25 PartNumber : a21111000ux0069 ProductDescription : 1. Nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut, is a kind of locknut. 2. It is a nut with a nylon insert that resists turning. 3. The plastic insert is placed at the end of the nut, and its inner diameter (ID) is slightly smaller than the diameter of the screw. 4. The inserts deform elastically over the threads of the screw, but threads are not cut into the nylon. Specification: Material: 304 Stainless Steel Thread Size: M4 Pitch: 0.7 Hex Width: 7mm/0.28" Height: 6mm/0.24" Flange Diameter: 10mm/0.39" Package Content: 25pcsx Hex Lock Nuts