nailnest (7Sets) 5/16-18 x 4" Carriage Bolts Screws, 304 Stainless Steel Round Head Square Neck 5/16 Carriage Bolts and Nuts Kit with 5/16 Flat Washers, Fully Threaded Black Oxided — Open-Box

Name: nailnest (7Sets) 5/16-18 x 4" Carriage Bolts Screws, 304 Stainless Steel Round Head Square Neck 5/16 Carriage Bolts and Nuts Kit with 5/16 Flat Washers, Fully Threaded Black Oxided
Brand: nailnest
SKU: awhd-us-b0g1md96vc
Price: 8.36 USD
Availability: InStock

Brand: nailnest

Condition: Used

$8³⁶

Updated: 4 hours ago

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Description

Precise Specifications – nailnest 5/16-18 x 4" carriage bolts. Thread Size: 5/16" (7.94mm); Pitch: 0.056" (1.41mm); Head diameter: 0.697" inch (17.7mm); Head height: 0.165" (4.2mm); Length (square neck included): 4" (100mm). Suitable for both indoor and outdoor applications.

Sturdy Construction – Nailnest carriage bolts are manufactured from 18-8 (304) stainless steel, providing improved corrosion and rust resistance over carbon steel screws. These lag screws are designed for extended use, with greater resistance to damage and enhanced structural strength. 5/16 stainless steel bolts are suitable for outdoor wood fastening applications where durability and reliability are required.

Features – Carriage bolts feature a domed head and a square neck, typically used with a hex nut and flat washer. The smooth, unslotted head design may help deter unauthorized removal, and the square neck provides a self-locking effect when installed in a square hole.

Hardware Solution – Carriage bolts are suitable for a range of applications beyond their historical use, including woodworking, timber framing, shed construction, trailer decking, deck building, and outdoor bench assembly.

Packaged Set – This set includes 7pcs 5/16x4 carriage bolts + 7pcs washers + 7pcs hex nuts. Supplied together for convenient use. The components are designed to align properly during installation, allowing for efficient driving into wood or other materials.

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Product Details

SKU:: awhd-us-b0g1md96vc
Model:: 304S-YTFJ-MC-5-16x4-BLA-7PC-NN
Country:: US
ASIN:: B0G1MD96VC

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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. 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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