18-8 SS Hex Nut

18-8 stainless steel hex nuts are made from one of the following austenitic alloys: 303, 303Se, 304, XM7, all of which are characterized as having a chromium content of 17-19% and nickel content of 8-10%. Dimensional specifications are governed by ASME B18.2.2. There are no grade markings on 18-8 stainless hex nuts. 300 series stainless steel fasteners are commonly used in applications that require general atmospheric corrosion resistance, such as chemical and food processing equipment. Stainless steel has a higher corrosion resistance than carbon steel.

18-8 SS Hex Nut
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Diameter Thread Pitch Width Across Flats Item # Availability Price Quantity UOM

#4-40 18-8 Stainless Steel Machine Hex Nut

$0.0396/EA
98 In Stock
Quantity Price
Quantity Price
1 $0.0396/EA
4810 $0.0371/EA
19210 $0.03304/EA
76830 $0.02189/EA

#5-40 18-8 Stainless Steel Hex Nut

$0.08173/EA
Out Of Stock
Quantity Price
Quantity Price
1 $0.08173/EA
2500 $0.07657/EA
10000 $0.06819/EA
39970 $0.04519/EA

#6-32 18-8 Stainless Steel Machine Hex Nut

$0.03519/EA
583 In Stock
Quantity Price
Quantity Price
1 $0.03519/EA
2360 $0.03296/EA
9430 $0.02936/EA
37690 $0.01945/EA

#8-32 18-8 Stainless Steel Machine Hex Nut

$0.04495/EA
5850 In Stock
Quantity Price
Quantity Price
1 $0.04495/EA
1880 $0.04211/EA
7500 $0.0375/EA
29980 $0.02485/EA

#8-36 18-8 Stainless Steel Machine Hex Nut

$0.23049/EA
Out Of Stock
Quantity Price
Quantity Price
1 $0.23049/EA
1880 $0.21593/EA
7500 $0.19229/EA
29980 $0.12743/EA

#10-24 18-8 Stainless Steel Machine Hex Nut

$0.05292/EA
4721 In Stock
Quantity Price
Quantity Price
1 $0.05292/EA
1670 $0.04958/EA
6670 $0.04415/EA
26650 $0.02926/EA

#10-32 18-8 Stainless Steel Machine Hex Nut

$0.06265/EA
1465 In Stock
Quantity Price
Quantity Price
1 $0.06265/EA
1670 $0.05869/EA
6670 $0.05227/EA
26650 $0.03464/EA

#12-24 18-8 Stainless Steel Machine Hex Nut

$0.09358/EA
574 In Stock
Quantity Price
Quantity Price
1 $0.09358/EA
1880 $0.08767/EA
7500 $0.07808/EA
33720 $0.05174/EA

1/4-20 18-8 Stainless Steel Hex Nut

$0.06911/EA
Out Of Stock
Quantity Price
Quantity Price
1 $0.06911/EA
1350 $0.06474/EA
5390 $0.05765/EA
24230 $0.03821/EA

1/4-28 18-8 Stainless Steel Hex Nut

$0.09264/EA
251 In Stock
Quantity Price
Quantity Price
1 $0.09264/EA
1350 $0.08679/EA
5390 $0.07729/EA
24230 $0.05122/EA

5/16-18 18-8 Stainless Steel Hex Nut

$0.11678/EA
2161 In Stock
Quantity Price
Quantity Price
1 $0.11678/EA
900 $0.10946/EA
3600 $0.09733/EA
16190 $0.06486/EA

5/16-24 18-8 Stainless Steel Hex Nut

$0.1344/EA
1083 In Stock
Quantity Price
Quantity Price
1 $0.1344/EA
900 $0.12598/EA
3600 $0.11202/EA
16190 $0.07464/EA

3/8-16 18-8 Stainless Steel Hex Nut

$0.14403/EA
9386 In Stock
Quantity Price
Quantity Price
1 $0.14403/EA
620 $0.13515/EA
2480 $0.11992/EA
11130 $0.08052/EA

3/8-24 18-8 Stainless Steel Hex Nut

$0.37227/EA
247 In Stock
Quantity Price
Quantity Price
1 $0.37227/EA
620 $0.34931/EA
2480 $0.30994/EA
11130 $0.20811/EA

7/16-14 18-8 Stainless Steel Hex Nut

$0.27889/EA
154 In Stock
Quantity Price
Quantity Price
1 $0.27889/EA
540 $0.26223/EA
2130 $0.23179/EA
9580 $0.15878/EA

7/16-20 18-8 Stainless Steel Hex Nut

$0.28712/EA
203 In Stock
Quantity Price
Quantity Price
1 $0.28712/EA
540 $0.26997/EA
2130 $0.23863/EA
9580 $0.16347/EA

1/2-13 18-8 Stainless Steel Hex Nut

$0.32913/EA
782 In Stock
Quantity Price
Quantity Price
1 $0.32913/EA
270 $0.30969/EA
1060 $0.27364/EA
4750 $0.18853/EA

1/2-20 18-8 Stainless Steel Hex Nut

$0.30899/EA
135 In Stock
Quantity Price
Quantity Price
1 $0.30899/EA
270 $0.29074/EA
1060 $0.2569/EA
4750 $0.17699/EA

9/16-12 18-8 Stainless Steel Hex Nut

$0.64453/EA
526 In Stock
Quantity Price
Quantity Price
1 $0.64453/EA
170 $0.60647/EA
680 $0.53588/EA
3060 $0.3692/EA

9/16-18 18-8 Stainless Steel Hex Nut

$2.22144/EA
Out Of Stock
Quantity Price
Quantity Price
1 $2.22144/EA
170 $2.09025/EA
680 $1.84697/EA
3060 $1.27247/EA

5/8-11 18-8 Stainless Steel Hex Nut

$0.5892/EA
1764 In Stock
Quantity Price
Quantity Price
1 $0.5892/EA
140 $0.55497/EA
540 $0.48969/EA
2430 $0.33998/EA

5/8-18 18-8 Stainless Steel Hex Nut

$1.40655/EA
23 In Stock
Quantity Price
Quantity Price
1 $1.40655/EA
140 $1.32482/EA
540 $1.16898/EA
2430 $0.81161/EA

3/4-10 18-8 Stainless Steel Hex Nut

$0.76063/EA
696 In Stock
Quantity Price
Quantity Price
1 $0.76063/EA
90 $0.71697/EA
340 $0.63246/EA
1500 $0.44254/EA

3/4-16 18-8 Stainless Steel Hex Nut

$1.59068/EA
10 In Stock
Quantity Price
Quantity Price
1 $1.59068/EA
90 $1.49937/EA
340 $1.32263/EA
1500 $0.92546/EA

7/8-9 18-8 Stainless Steel Hex Nut

$1.13486/EA
125 In Stock
Quantity Price
Quantity Price
1 $1.13486/EA
60 $1.07067/EA
210 $0.94362/EA
940 $0.6643/EA

7/8-14 18-8 Stainless Steel Hex Nut

$2.8739/EA
5 In Stock
Quantity Price
Quantity Price
1 $2.8739/EA
60 $2.71134/EA
210 $2.3896/EA
940 $1.68224/EA

1-8 18-8 Stainless Steel Hex Nut

$1.85466/EA
294 In Stock
Quantity Price
Quantity Price
1 $1.85466/EA
40 $1.75075/EA
140 $1.54301/EA
630 $1.09216/EA

1-14 18-8 Stainless Steel Hex Nut

$3.02728/EA
8 In Stock
Quantity Price
Quantity Price
1 $3.02728/EA
40 $2.85768/EA
140 $2.51858/EA
630 $1.78269/EA

1 1/8-7 18-8 Stainless Steel Hex Nut

$4.88452/EA
135 In Stock
Quantity Price
Quantity Price
1 $4.88452/EA
25 $4.61087/EA
100 $4.06374/EA
500 $2.87638/EA

1 1/4-7 18-8 Stainless Steel Hex Nut

$5.93462/EA
116 In Stock
Quantity Price
Quantity Price
1 $5.93462/EA
25 $5.60214/EA
80 $4.93738/EA
500 $3.49476/EA

1 1/4-12 18-8 Stainless Steel Hex Nut

$13.7903/EA
16 In Stock
Quantity Price
Quantity Price
1 $13.7903/EA
25 $13.01771/EA
80 $11.473/EA
500 $8.12078/EA

1 3/8-6 18-8 Stainless Steel Hex Nut

$9.00491/EA
28 In Stock
Quantity Price
Quantity Price
1 $9.00491/EA
25 $8.50042/EA
60 $7.49174/EA
500 $5.30278/EA

1 1/2-6 18-8 Stainless Steel Hex Nut

$13.63274/EA
8 In Stock
Quantity Price
Quantity Price
1 $13.63274/EA
25 $12.86898/EA
50 $11.34192/EA
500 $8.028/EA