5/16-18 X 7 1/2 Hex Head Cap Screw Stainless Steel

Hex Head Cap Screws

Thread Dimensions

5/16-18 X 7 1/2"

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Since 1947
SKU: 31120CH188YW Product Size: 5/16-18 X 7 1/2 Weight: 2 lbs Condition: New
$67.91 for Pack of 10 Cap Screws
That's only $6.7906 per Cap Screw
of 10 Cap Screws
You pay $64.51 if you buy 5 Packs or more.
That's only $6.4511 per Cap Screw

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18/8 Stainless Steel - USS Coarse Thread

• Manufactured to ASME B18.2.1 dimensions
• Used in products that require general atmospheric corrosion resistance, such as chemical and food-processing equipment
• Some chemical environments may require special corrosion resistant materials and precautions
• A cap screw made from one of the following austenitic alloys: 303, 303Se, 304, XM7, all of which are characterized as having a chromium content of 17-19% and nickel content of 8-10%
• 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 in annealing, which is done at approximately 1900°F to a dead soft condition and is not normally thermally reversible
• Manufactured to ASME B18.2.1 dimensions

Hardnes	1/4" through 5/8" diameter: Rockwell B95-C32 3/4" through 1" diameter: Rockwell B80-C32
Yield Strength	1/4" through 5/8" diameter, 2.25D and longer: 65,000 psi. min. 3/4" (2.25D & longer) & 7/8" through 1" diameter (3D & Longer): 45,000 psi. minimum
Tensile Strength	*1/4: through 5/8" diameter, 2.25D and longer: 100,000 - 150,000 psi. 3/4" (2.25d & longer) & 7/8" through  1" diameter (3D & longer): 85,000 - 140,000 psi.
Elongation in 4D	1/4" through 5/8" diameter: 20% minimum; 3/4" through 1" diameter; 25% minimum
Thread Length	Double the diameter plus 1/4" up to 6" length

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