Grade 8, 5/16"-18 Hex Head Cap Screw, Black Oxide Steel, 3-1/2 in L, 50 PK MPN:U04100.031.0350
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Free Shipping
In Stock
SKU
510-G5326684
Grade 8, 5/16"-18 Hex Head Cap Screw, Black Oxide Steel, 3-1/2 in L, 50 PK
For heavy-duty applications that require exceptional strength and durability, Grade 8, 5/16in-18 Hex Head Cap Screws are the ideal choice. Made from black oxide steel, these screws are resistant to corrosion and provide a secure hold in a variety of materials. With a 3-1/2 inch length and right-hand thread, they are perfect for use in construction, manufacturing, and other industries where a high level of torque is required. Their coarse UNC thread ensures a strong hold, while the hex head provides a secure grip for easy installation and removal. Available in packs of 50.
Top product features:
- Grade 8 steel provides high strength and durability
- Hex head design allows for easy installation and removal with a wrench
- Right-hand thread direction ensures secure and consistent fastening
Top product applications:
- Heavy machinery assembly
- Automotive repair and maintenance
- Industrial equipment installation
Hex Head Cap Screw, System of Measurement Inch, Basic Material Steel, Material Grade Grade 8, Fastener Finish Plain, Dia./Thread Size 5/16 In.-18, Fastener Length 3 1/2 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), Fastener Thread Style Partially Threaded, Fastener Industry Standards ASME B18.2.1, Head Type Hex, Min. Thread Length 7/8 in, Head Height 13/64 in, Head Width 1/2 in, Package Quantity 50
Additional Information
- Country of Origin: ZZ
- Drop Ship Item: No
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 1 days
- Minimum Order Quantity: 1
- Unit of Measure: PK
- Package Length: 8.27
- Package Width: 6.57
- Package Height: 1.00
- Package Weight: 4.10
Product info last updated on February 14, 2026 4:55pm UTC
Category: Screws and Bolts