1/2"-13x1 3/4",(FT) UNC Stainless Steel (316) Hex Head Cap Screw, ASTM F593 (INCH) (Quantity: 50) Size: 1/2"-13 | Length: 1-3/4" | Coarse Thread | Fully Threaded

316: The molybdenum content gives this type of stainless even greater corrosion resistance than 18-8 as well as superior strength at high temperatures. MATERIAL: 316: A cap screw made from 316 stainless steel, an austenitic alloy which differs from 18-8 by its molybdenum content (2-3%) and a higher nickel content (10-14%). HEAT TREATMENT: The austenitic alloys develop their strength through work hardening during the fastener manufacturing process, as seen from the hardness properties below. The only heat treatment normally available on austenitic stainless alloys is annealing, which is done at approximately 1900°F to a dead soft condition and is not normally thermally reversible. HARDNESS: 1/4 through 5/8 in. diameter: Rockwell B95 - C32 | 3/4 through 1 in. diameter: Rockwell B80 - C32. YIELD STRENGTH: 1/4 through 5/8 in. diameter, 2.25D and longer: 65,000 psi. minimum | 3/4" (2.25D & longer) & 7/8 through 1 in. diameter (3D & longer): 45,000 psi. minimum. TENSILE STRENGTH: 1/4 through 5/8 in. diameter, 2.25D and longer: 100,000 - 150,000 psi. | 3/4" (2.25D & longer) & 7/8 through 1 in. diameter (3D & longer): 85,000 - 140,000 psi.

• 497 stainless steel cap screws are made from austenitic alloys
• Hex Cap Screws (Hex Head Bolts)
• Manufactured to ASME B18.2.1 dimensions