Hex nuts, Stainless steel 18-8
Nut

Nut size (A.K.A. diameter) is the size bolt that the nut is used with. The same is true of the thread count. Thus a 1/4"-20 nut fits a 1/4"-20 bolt.

Hex nut diameter

Resources

US Nut sizes

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Prod. # Diameter and Thread count Each price Bag price Bulk price Price Buy

Coarse (standard) thread
2563 1/4"-20 $0.09 / ea $5.62 / 100 $44.20 / 1000 $0.09 / ea $5.62 / 100 $44.20 / 1000
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2564 5/16"-18 $0.11 / ea $7.29 / 100 $59.10 / 1000 $0.11 / ea $7.29 / 100 $59.10 / 1000
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2565 3/8"-16 $0.18 / ea $12.47 / 100 $101.00 / 1000 $0.18 / ea $12.47 / 100 $101.00 / 1000
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5574 7/16"-14 $0.38 / ea $13.11 / 50 $113.00 / 500 $0.38 / ea $13.11 / 50 $113.00 / 500
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2566 1/2"-13 $0.43 / ea $13.56 / 50 $116.00 / 500 $0.43 / ea $13.56 / 50 $116.00 / 500
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18172 9/16"-12 $0.66 / ea $14.27 / 25 $123.00 / 250 $0.66 / ea $14.27 / 25 $123.00 / 250
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2567 5/8"-11 $0.75 / ea $14.39 / 25 $123.00 / 250 $0.75 / ea $14.39 / 25 $123.00 / 250
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2568 3/4"-10 $1.03 / ea $16.93 / 20 $145.00 / 200 $1.03 / ea $16.93 / 20 $145.00 / 200
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4068 7/8"-9 $2.37 / ea $38.27 / 20 $326.00 / 200 $2.37 / ea $38.27 / 20 $326.00 / 200
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4069 1"-8 $2.96 / ea $48.81 / 20 $430.00 / 200 $2.96 / ea $48.81 / 20 $430.00 / 200
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Fine thread
5260 1/4"-28 $0.13 / ea $6.80 / 100 $58.40 / 1000 $0.13 / ea $6.80 / 100 $58.40 / 1000
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5261 5/16"-24 $0.16 / ea $10.28 / 100 $88.60 / 1000 $0.16 / ea $10.28 / 100 $88.60 / 1000
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5262 3/8"-24 $0.21 / ea $13.82 / 100 $120.00 / 1000 $0.21 / ea $13.82 / 100 $120.00 / 1000
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5263 7/16"-20 $0.40 / ea $14.85 / 50 $128.00 / 500 $0.40 / ea $14.85 / 50 $128.00 / 500
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5264 1/2"-20 $0.47 / ea $16.91 / 50 $146.00 / 500 $0.47 / ea $16.91 / 50 $146.00 / 500
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5265 5/8"-18 $1.03 / ea $20.29 / 25 $181.00 / 250 $1.03 / ea $20.29 / 25 $181.00 / 250
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5266 3/4"-16 $1.26 / ea $22.55 / 20 $201.00 / 200 $1.26 / ea $22.55 / 20 $201.00 / 200
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See also
Hex machine screw nut

Hex machine screw nuts, Stainless steel 18-8

A hex nut in smaller sizes for machine screw diameters under 1/4.

Nut

Metric hex nuts

A standard six sided nut.

Hex nylon insert lock nuts

Hex nylon insert lock nuts, Stainless steel 18-8

A hex nut with a nylon ring to resist loosening.