Specification Brand : The Hillman Group BulletPoint1 : Zinc-Plated, Packed 100 Per Box, Auxiliary Retails Reflect Per Each Retail BulletPoint2 : These Washers Help To Prevent Bolts Or Nuts From Pulling Through A Surface BulletPoint3 : Narrow Pattern BulletPoint4 : From The Brand: The Hillman Group BulletPoint5 : Easy To Use:The surface of the plastic washers for screws are smooth and burr-free, beautiful and easy to use, the round washer is easy to fasten with screws or nails, also can be easily removed, suitable for use in foam board insulation, stabilizing gypsum ceilings, installing polystyrene boards, hanging foam boards and so on Color : Steel ExteriorFinish : Zinc ExternallyAssignedProductIdentifier : 9557540151255 ExternallyAssignedProductIdentifier1 : 008236155921 ExternallyAssignedProductIdentifier2 : 0008236155921 ExternallyAssignedProductIdentifier3 : 00008236155921 ItemName : The Hillman Group 280060 100PC 3/8" SAE FL Washer, No Size ItemPackageDimensions_Height : 10 centimeters ItemPackageDimensions_Length : 4.8 centimeters ItemPackageDimensions_Width : 7.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : flat-washers Manufacturer : The Hillman Group Material : Alloy Steel MetalType : Alloy Steel ModelNumber : 280060 NumberOfItems : 1 NumberOfPieces : 100 PackageLevel : unit PartNumber : 280060 ProductDescription : 100pcs Polypropylene Washers 45mm(Screw not included) Features: 1. Compact & lightweight, easy to install, easy to hold and use. 2. Plastic washer for fixing and supporting rigid foam insulation foam boards. 3. The polypropylene washers are made of tough polypropylene, which can ensure a nice rigidity and balance. 4. The load spreading washers with flat bottom for flush mounting, which are suitable for nails and screws. 5. White washers for screws fit for insulation foam board, expanded polystyrene boards, extruded polystyrene and many kinds of foam boards. Specification Product Name: Plastic Washers Color: White Material: Polypropylene Quantity: 100pcs Each Washer Size: 45 mm/ 1.77 inch in diameter,a 5 mm center hole.