M3 M4 Countersunk Flat Head Screw Allen Socket Bolts 304 Stainless Steel DIN7991
M3 M4 Metric Coarse Thread Fully Threaded Countersunk Flat Head Screws Bolts Allen Socket Bolts Hex Key Drive Machine Screws DIN 7991 (ISO 10642) Made of Stainless Steel Grade A2-70 (AISI 304) 4mm to 150mm Length High-quality materials, exquisite craftsmanship, safe, reliable and durable, long service life, complete specifications, convenient and flexible use, and better cost performance. Professional fasteners & hardware manufacturing, exquisite craftsmanship, head smooth burr-free, feel comfortable, standard and complete, uniform force. Made from Grade A2-70 (AISI 304) Stainless Steel, waterproof, rustproof, corrosion-resistant, erosion-resistant, durable, safer for long-term use. Flat Head Screws fit in countersunk holes or sink down intoyour material for a flush finish. This leaves a clean,smooth look while preventing the head from snaggingany surrounding parts. Please select material, size and quantity pack from drop down option above. Larger quantities available upon request. ● Standard Part● Specification: DIN 7991 (ISO 10642)● System of Measurement: Metric● Material: A2-70 Stainless Steel（Other National Reference Grade AISI 304; DIN X5CrNi18-10; EN 1.4301; JIS SUS304） ● Tensile strength: 700MPa, Yield strength: 450MPa● Surface finish: Untreated ● Type: Countersunk Socket Screw● Head Style: Flat Head● Drive Style: Allen Key (Hex Key) ● Thread Direction: Right Hand● Fully Threaded● Available Thread Size:M3, Thread Diameter 3mm, Pitch 0.5mmM4, Thread Diameter 4mm, Pitch 0.7mm ● Available Length: 4mm – 150mm (Screw lengths are measured overall, including the head.) ● Size Options”D x L” , such as: M3 x 12mm (Thread Dia 3mm x Screw Length 12mm) . ● Exact dimensions can also be viewed in the photo gallery. ● Note: Standard Manufacturers Tolerances Apply ● You can find more products in different material, type, color, sizes, quantity and shapes in our shop！ If you have special needs, please contact us, we can customize according to your needs! ● Note: – Please allow minor errors due to manual measurement. Thank you for your comprehension. – Monitors are not calibrated, the element color shown in the photos may differ slightly from the real object. Please take the real one as standard. Package included : ( According to your choice ) What is A2-70 Stainless Steel ? A2 Stainless Steel is commonly referred to as 304 or 18/8 because it contains 18% chromium and 8% nickel. A2 is an austenitic stainless steel and is almost non magnetic but will still stick lightly to a magnet due to the cold working process. A2-70 is the most commonly used grade, the 70 represents a tensile strength of 700N/mm2. A2 Stainless Steel is suitable for a wide range of applications in alot of different industries such as the automotive industry in applications such as body panelling and bumpers etc, the food industry and catering due to its ease of cleaning and corrosion resistance, also commonly used in the engineering industry and architecture, A2 Stainless Steel is also favoured by the remote control and model making enthusiasts. Also a favourite for many different DIY jobs in and around the home and garage for those jobs where a standard BZP fastener will not do. In general A2-70 Stainless Steel is ideal for a whole range of uses where a good finish is needed on an interior or exterior applications. What is A4-70 Stainless Steel ? A4 Stainless Steel is commonly referred to as 316 Stainless Steel. A4 is an austenitic stainless steel and is almost non magnetic but will still stick lightly to a magnet due to the cold working process. A4-70 is the most commonly used grade, the 70 represents a tensile strength of 700N/mm2. It is based on A2 stainless steel further added nickel, chromium, molybdenum elements, with higher density and better performance, especially in high temperature resistance and corrosion resistance performance. Due to its excellent corrosion resistance and high strength, A4 stainless steel is widely used in food processing, shipbuilding, seawater treatment equipment, chemical industry, dyestuffs, paper making, food industry and other fields. On Aug 22, 2024 at 21:32:23 PDT, seller added the following information: