SevnYoko Group 31 Battery Nuts 3/8-16 UNC — 20-Pack Stainless Steel Closed-Top, 9/16 in Hex

SevnYoko 20-pack closed-top battery nuts provide corrosion-resistant, OE-compatible 3/8-16 UNC fasteners specifically sized for Group 31 battery studs.

These stainless-steel closed hex nuts are built to replace OEM part numbers for heavy-duty and commercial battery installations, delivering a clean sealed top to block debris and moisture while maintaining a standard 9/16" wrench surface for easy tightening. Supplied as a set of 20, they suit workshops, fleet technicians, and anyone maintaining multi-battery systems who needs reliable, long-lasting connections.

Will these nuts fit my Group 31 battery studs?

Yes — they are engineered for the common 3/8" battery stud used on Group 31 batteries. The internal 3/8-16 UNC threading and the external 9/16" hex head match standard sizes, so they replace existing factory hardware without modifications.

• Thread: 3/8-16 UNC for standard battery studs
• Head size: 9/16" hex for common wrenches and sockets
• Designed specifically with Group 31 dimensions in mind
• Direct-fit for most OEM Group 31 applications

How durable are SevnYoko closed-top battery nuts in harsh environments?

Manufactured from corrosion-resistant stainless steel, these nuts are intended to withstand road salt, humidity, and general exposure common in automotive and marine settings. The closed-top design prevents contaminants from entering the threads, reducing the risk of corrosion and improving long-term electrical contact.

• Stainless-steel construction for rust resistance
• Sealed top blocks dirt, water, and salt spray
• Durable under vibration typical of trucks and heavy equipment
• Maintains clamping force longer than plated or plain steel nuts

Are these nuts compatible with OEM replacements and common part numbers?

They are specified as direct replacements for a range of OEM references, making them appropriate for repair and maintenance jobs where original numbers are referenced. This compatibility simplifies sourcing and ensures you get the right fastener when servicing batteries that list common OEM part numbers.

• Replaces OEM numbers like 6015-010 and compatibles
• Matches form and function of listed OEM parts
• Useful for quick swaps during maintenance or inspections
• Sold as a multi-unit pack for fleet use and multiple-battery setups

What practical benefits does buying the 20-pack offer?

Purchasing a 20-piece set reduces downtime and simplifies inventory for shops or vehicle owners managing several batteries. Having spares on hand means faster turnarounds during service and avoids the mismatch risk when replacing worn or corroded nuts one at a time.

• Twenty nuts per pack for multiple batteries or spare stock
• Lower per-unit cost versus single-item purchases
• Convenient for fleets, repair shops, and multi-battery systems
• No need to re-thread studs or modify hardware during replacement

Who is this for? Technicians, fleet managers, and vehicle owners who work with Group 31 batteries and need dependable, corrosion-resistant fasteners will find this SevnYoko 20-pack ideal. It suits heavy trucks, commercial equipment, marine applications, and any situation where a sealed, standard-size battery nut simplifies maintenance and extends connection life. If you require OE-compatible replacements with a sealed-top design and stainless-steel longevity, this kit offers ready-to-use hardware to keep battery systems secure and serviceable.