Nut Kits

Nut kits combine commonly used fastening nuts, and in some assortments matching washers, in one selection for maintenance, repair, assembly, and stockroom use. The available kits include metric hex nut and washer assortments, coarse- and fine-thread finished hex nuts, and nylon lock nut options to help teams keep a range of compatible hardware sizes on hand.

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Helpful Buying Guide

Choose a Nut Kit for the Fasteners You Use Most

A nut kit can help simplify routine replacement, repair, and assembly work by keeping multiple sizes together. Start by matching the thread system and thread type to the compatible threaded fasteners in use, then choose between standard finished hex nuts, nylon lock nuts, or a metric assortment with washers.

Visual Guide

Popular examples in this category

630-Piece Metric Hex Nut and Washer Assortment630-Piece Metric Hex Nut and Washer AssortmentWBB2170183335-Piece Zinc-Plated Nylon Lock Nut Assortment335-Piece Zinc-Plated Nylon Lock Nut AssortmentWBB2170178315-Piece Grade 2 Coarse-Thread Finished Hex Nut Assortment315-Piece Grade 2 Coarse-Thread Finished Hex Nut AssortmentWBB2170180315-Piece Fine-Thread Finished Hex Nut Assortment315-Piece Fine-Thread Finished Hex Nut AssortmentWBB2170175
Use Cases

Keep common hardware ready

Nut assortments support maintenance teams, repair shops, assembly work, and stockroom replenishment when multiple common sizes may be needed.

How to Choose

Match threads and sizes first

Select metric M4 through M12 hardware for metric fastening needs, or choose the listed inch thread ranges. For finished hex nuts, confirm whether coarse or fine threads match the fastener.

Applications

Choose the nut style needed

Finished hex nut kits provide standard nut selections. Nylon lock nut assortments provide nylon lock or nylon-insert options. The metric kit also includes corresponding flat and lock washers.

Additional Information

Compare assortment makeup

Piece counts range from 104 to 630, while the number of included thread sizes ranges from six to 12. Some assortments include higher quantities of select sizes.

104–630Pieces per kit

Available assortment counts range from 104 to 630 pieces.

6–12Thread sizes

The listed assortments provide six, 11, or 12 thread sizes.

M4–M12Metric coverage

The metric assortment covers six sizes from M4 through M12.

1/4–5/8 in.Finished hex nut range

Coarse- and fine-thread finished hex nut assortments span listed sizes from 1/4 inch through 5/8 inch.

Comparison Guide

Compare Nut Kit Types

Use this overview to compare the primary assortment styles and the selection details provided for each.

Kit typeThread and size coverageIncluded components
Metric hex nut and washer assortmentSix metric sizes, M4 through M12Hex nuts with corresponding flat washers and lock washers
Finished hex nut assortmentsSix coarse-thread sizes from 1/4-20 through 5/8-11, or six fine-thread sizes from 1/4-28 through 5/8-18Finished hex nuts
Nylon lock nut assortments11 or 12 thread sizes; one listed range spans 4-40 through 5/8-11Nylon lock nuts or nylon-insert lock nuts
Planning Guide

Plan the right fit before choosing

Thread and size selection

Choose metric, coarse-thread, or fine-thread coverage

The metric hex nut and washer assortment covers six sizes from M4 through M12. Inch-based finished hex nut assortments are available in six coarse-thread sizes from 1/4-20 through 5/8-11 or six fine-thread sizes from 1/4-28 through 5/8-18. Nylon lock nut assortments cover 11 or 12 listed thread sizes, with ranges including 4-40 through 5/8-11.

  • Match the nut thread to the compatible threaded fastener.
  • Use the metric assortment when M4 through M12 sizes are required.
  • Compare coarse and fine thread requirements before selecting a finished hex nut kit.
Nut and washer styles

Select the component combination for the task

Finished hex nut assortments focus on standard hex nuts. Nylon lock nut assortments offer nylon lock designs, including a nylon-insert selection. For buyers who need accompanying washers, the metric assortment includes hex nuts, flat washers, and lock washers in corresponding sizes.

  • Choose a finished hex nut assortment for standard hex nut coverage.
  • Choose a nylon lock nut assortment when a nylon lock design is needed.
  • Choose the metric nut and washer assortment for matched nuts, flat washers, and lock washers.
Assortment quantity

Balance total pieces with size coverage

Available assortments range from 104 to 630 pieces. The 315-piece coarse-thread finished hex nut assortment includes 100 each of 1/4-20 and 5/16-18 nuts, while the 104-piece nylon-insert lock nut assortment has size-based quantities ranging from four to 20 pieces.

  • Consider total piece count for the amount of hardware to keep on hand.
  • Review the number of thread sizes included in the kit.
  • Check size-based quantities when frequently used sizes matter most.
FAQ

Common questions before buying

What types of nut kits are available?

The available selections include metric hex nuts with flat and lock washers, coarse- and fine-thread finished hex nuts, and nylon lock nut assortments.

What metric sizes are included in the metric assortment?

The metric hex nut and washer assortment covers M4 through M12 sizes.

What is the difference between the finished hex nut assortments?

One finished hex nut assortment covers coarse threads from 1/4-20 through 5/8-11, while another covers fine threads from 1/4-28 through 5/8-18.

Do any kits include washers?

Yes. The 630-piece metric assortment includes hex nuts, flat washers, and lock washers in corresponding sizes.

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