Material: Made of 304 stainless steel (18-8 A2-70 grade), it has extremely strong corrosion and oxidation resistance, and can maintain excellent durability in humid environments, outdoor environments, or heavy equipment, meeting the dual needs of industry and home decoration. Flat head and full thread design：The chamfered flat head design provides a larger contact area, making the screw more compatible with the installation surface. Designed with full threads to provide strong fixing force, ensuring stability and durability in heavy machinery or home decoration projects, and avoiding loosening. Complete Kit for Convenience：Each package includes 20 pieces of 1/4-20 x 2-1/2" flat head hex socket cap screws, 1 hex spanner, and a transparent storage boxfor easy organization. Whether you're a professional or a DIY enthusiast, this all-in-one kit has everything you need to get the job done right Versatile Applications for Home & Industry：Ideal for assembling beds, cots, flat-pack furniture, office appliances, and machinery, these screws are also perfect for shipbuilding and various DIY projects. Their reliable performance makes them a must-have for both household repairs and industrial use Satisfaction Guaranteed with Exceptional Support：We stand behind the quality of our products. If you have any questions or concerns, our dedicated customer service team is here to help. Contact us anytime, and we’ll provide a professional response within 24 hours. Your satisfaction is our top priority Product Title: 304 Stainless Steel Hex Socket Screws 18-8 Bolts- 1/4" & 5/16" Corrosion Resistant(with Hex Spanner) Description: Industrial-grade 304 stainless steel flat head hex socket head cap screws for high-stress applications. Three diameters: 1/4" (6.35mm) & 5/16" (7.94mm) & 3/16" (5.72mm) with Fully Machine Thread. Key Features: ✓ 304 Stainless Steel ✓ temperature resistanc ✓ Grade A hardness
100,000 PSI tensile strength ✓ ±0.02mm hex socket precision ✓ anti-loosening design Applications: Automotive/Engine Parts Marine/Solar Installations Industrial Machinery Furniture/DIY Projects Packaging: 10/20/25/30/40/50pcs