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3/8" x 4.5" Hex bolt (bag of 30)

PRICE:
$13.00
SKU:
RVB38HB45-30
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  • Description

    3/8" x 4.5" Hex bolt to connect ridge vent arms to 1.9" bows

This 3/8" x 4.5" Grade 5 hex bolt is the standard fastener for connecting ridge vent arms to 1.9" diameter bows on CT Greenhouse high tunnels and greenhouse structures. Each bag includes 30 zinc-plated, coarse-thread bolts ready for structural assembly. Grade 5 steel (SAE J429) provides the tensile strength needed for outdoor hardware that stays tight through wind, vibration, and seasonal temperature swings. Pair with a 3/8" nut and 3/8" washer for a complete, secure connection.

Product Specifications

Diameter
3/8"
Thread size
3/8"-16 (UNC Coarse)
Length
4-1/2"
Grade
Grade 5 (SAE J429)
Plating
Zinc
Head style
Hex
Wrench size
9/16"
Head height
0.226" to 0.243"
Thread length (min)
1"
Dimensional standard
ASME B18.2.1
Material standard
SAE J429
Quantity per bag
30

Frequently Asked Questions

What size wrench fits a 3/8" hex bolt?
A 3/8" hex bolt uses a 9/16" wrench. This measurement refers to the width across the flats of the hex head (the distance between two parallel sides), and matches a standard 9/16" open-end or box wrench.
What does 3/8"-16 mean on a bolt?
The designation 3/8"-16 describes the bolt in two parts: 3/8" is the bolt's nominal shank diameter, and 16 is the thread count, the number of threads per inch. A thread count of 16 indicates a coarse (UNC) thread pattern, which is the standard for most structural fastener applications.
What is a 3/8" hex bolt used for in greenhouse construction?
At CT Greenhouse, this 3/8" x 4-1/2" hex bolt is designed to attach ridge vent arms to 1.9" diameter bows. It's sold as a matched component for CT Greenhouse ridge vent assemblies and is typically paired with a 3/8" nut and 3/8" washer for a secure, vibration-resistant connection.

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