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3/8-16 x 2-1/2" Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Hex Drive, Partial Thread, 10 PCS — Open-Box, 11% Off
Brand: EASTLO
Condition: Used - Mint
$1027
$1149
-11% Save $122
Updated: 27 days ago
Description
Key Specs: 3/8-16 x 2-1/2"; Head Diameter: 0.54" – 0.562" (13.72 – 14.27 mm); Head Height: 0.375" (9.5 mm); Drive Size: 5/16" Allen Hex; Thread: Partial; Package: 10 PCS
Engineered from high-tensile 12.9 grade alloy steel, this bolt offers the ultimate in mechanical strength and load-bearing capacity. The added black oxide finish provides a basic layer of corrosion resistance and a clean, non-reflective appearance suitable for most industrial environments
The knurled (grip) pattern around the head allows for easy finger-tightening and tool grip in oily or gloved conditions. The internal hex drive enables high-torque installation with superior force transfer and minimal risk of stripping or cam-out
Built for Maximum Load Applications & Heavy Machinery: Employed in press frames, hydraulic power unit assemblies, trailer hitch components, and large gear reducers. This size delivers the clamping force required for the most demanding industrial and structural connections
The unthreaded shoulder (grip length) is designed to act as a precise dowel, providing accurate alignment and minimizing side movement in clearance holes. This design concentrates clamping force directly under the head, maximizes shear strength, and significantly reduces the risk of thread fatigue and fretting in high-vibration applications, such as machinery links and dynamic structural joints
Elevate your critical assemblies with our professional-grade 12.9 Alloy Steel Knurled Socket Head Cap Screws
Unmatched Strength: 12.9 Alloy Steel vs. 304 Stainless Steel
Choose 12.9 for ultimate mechanical performance; choose 304 for superior corrosion resistance in harsh environments. A basic black oxide finish provides a layer of protection and a clean appearance for typical industrial use
Optimized Thread Design: Full Thread vs. Partial Thread
Our series offers both Full Thread and Partial Thread options to match your specific engineering needs.
Full Thread Screws are versatile for general use, ideal for through-hole applications, joining thick materials, or when used with a nut, providing maximum thread engagement along the entire length.
Partial Thread Screws feature a precise unthreaded shoulder (grip length). This design acts like a dowel, ensuring perfect alignment, maximizing shear strength, and concentrating clamping force directly under the head—making them the preferred choice for precision-machined parts, dynamic joints, and high-vibration applications.
Unmatched Strength: 12.9 Alloy Steel vs. 304 Stainless Steel
Choose 12.9 for ultimate mechanical performance; choose 304 for superior corrosion resistance in harsh environments. A basic black oxide finish provides a layer of protection and a clean appearance for typical industrial use
Optimized Thread Design: Full Thread vs. Partial Thread
Our series offers both Full Thread and Partial Thread options to match your specific engineering needs.
Full Thread Screws are versatile for general use, ideal for through-hole applications, joining thick materials, or when used with a nut, providing maximum thread engagement along the entire length.
Partial Thread Screws feature a precise unthreaded shoulder (grip length). This design acts like a dowel, ensuring perfect alignment, maximizing shear strength, and concentrating clamping force directly under the head—making them the preferred choice for precision-machined parts, dynamic joints, and high-vibration applications.
Sold by
Amazon Warehouse
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- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b08vg9jnpn
- Model:
- AB530308-10
- Country:
- US
- ASIN:
- B08VG9JNPN
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $1 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
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