5/16"-24 x 4" Yellow Zinc Hex Head Cap Screw Grade 8
5/16"-24 x 4" Yellow Zinc Hex Head Cap Screw Grade 8
Grade 8 Hex Head Cap Screws are manufactured from medium carbon alloy steel that has been quenched and tempered for strength. Grade 8 is the highest grade offering of the SAE J429 classification with a minimum tensile strength exceeding that of Gr.5 by 25% to over 40%, depending on the diameter. Grade 8 HHCS are commonly used in heavy construction equipment, commercial vehicles and applications that demand a high strength fastener. Hex Head Cap screws feature an integral washer face under the head for a smooth bearing surface and a chamfered thread at the tip to allow for ease of assembly. They can be used in a threaded hole or mated with a nut in a through bolting application. Grade 8 bolts are identified by a head marking with 6 radial lines evenly spaced 60 degrees apart. They meet the material specification SAE J429 Grade 8 and can be supplied either in a plain finish or with a Zinc Yellow (Dichromate) plating with a chromate secondary layer that offers additional protection from corrosion and has an attractive yellow/gold appearance.
- Full Size Proof Stress 120,000 psi
- Minimum Yield strength 130,000 psi
- Minimum Tensile strength 150,000 psi
ManufacturerKL Jack Quality VendorItem TypeHex Cap Screw - InchSystem of MeasurementInchDrive TypeHexDiameter5/16"Length (inches)4"FinishYellow ZincGrade8Head StyleHexHex Size1/2"MaterialSteelSupplier Part Number15604Tensile Strength150,000 PSIThread Length7/8"Threads Per Inch24Thread StylePartial ThreadThread TypeFine
31F400HCS8Z
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EXTRAS
Extras
The following products are meant to be used or paired with the product above.
Stainless Steel U-Bolt Kit (4 mounts)
4 or 6 Point Deck Plate Mounting Kit
Life-Time Galvanized 4 Tube Kit
Still looking for the perfect part? Having trouble finding it?
Call our product experts at 603-224-7370 and let us lend a hand.
