Name: Hex Thick Nut
Availability: InStock
Rating: 4.5 (89 reviews)

Hex Thick Nut

The Thick Hex Nut, also known as a Heavy Hex Nut, is a standard mechanical fastener defined by its greater thickness (height) compared to a standard hex nut of the same nominal diameter.

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Product Details

Material	Carbon steel ,Stainless steel ,Alloy
Grade	4,8,10,12
Standard	DIN,ASTM,ANSI,JIS,EN,ISO,AS,GB
Surface Treatment	Blackened,Zinc plate,Yellow zinc,HDG,Thermodiffusion,Ruspert,Dacromet,Teflon,Phosphate,etc
Diameter	M3-M100
Salt Spray Test	24hr-1000hr
Testing equipment	Automatic Optic Inspector,Projecting Apparatus,Salt Spray Test,Hardness/Tensile Machine
Certification	SGS,RoHS,Material Certication,PPAP
Sample	Accepted,we will send samples for your approval
Package Description	Small box ,Carton ,bag ,small plastic bag and pallet
Delivery Term	EXW,FOB,CIF,CNF
Lead Time	Samples10- 15workdays,Mass productions 15-20 workdays after payment received.
Payment Term	T/T, Paypal,Cash

The Thick Hex Nut, also known as a Heavy Hex Nut, is a standard mechanical fastener defined by its greater thickness (height) compared to a standard hex nut of the same nominal diameter.

Its increased thickness provides several key functional advantages:

Increased Strength and Load Distribution: The primary benefit is its ability to withstand higher preload and shear forces. The greater height allows for more thread engagement with the mating bolt, which distributes the load over a larger area and helps prevent thread stripping, especially under vibration or dynamic loads.
Enhanced Durability and Spare Threads: The extra material provides a margin for wear and tear. It is often used in applications subject to frequent assembly and disassembly or where corrosion might reduce the effective thread area over time.
Improved Wrenching Surface: The taller sides offer a larger contact area for wrenches or sockets, which can facilitate better grip and more precise torque application during installation.

Thick hex nuts are commonly specified in critical structural and heavy machinery applications, such as steel construction (bridges, buildings), large industrial equipment, mining machinery, and high-pressure piping systems. They are typically paired with high-strength bolts (e.g., Grade 8, ASTM A325 or A490) and are manufactured to standards like ASTM A563 (U.S.) or ISO 4161 (international metric coarse). Their dimensions are precisely governed by standards such as ASME B18.2.2 for inch-series nuts.

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