These nuts are manufactured using durable materials and corrosion tested to ensure required strength and longevity. Durable materials - manufactured to specific thread tolerance standards Corrosion tested - hardware undergoes salt spray testing to ensure corrosion resistance Multipurpose usefulness - can be used in a variety of applications, from auto to home Trustworthy quality - backed by team of professional engineers and quality control specialists in the United States Support available - every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team Brand Dorman Model Dorman 434-309 Exterior Ready To Paint If Needed Item Weight 5 pounds Manufacturer Dorman Products OEM Part Number 434-309 Item model number 434-309 Product Dimensions 3.63 x 2.38 x 2.19 inches Manufacturer Part Number 434-309