18-8 SS Hex Nut
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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 Height of Nut Item # Availability Price Quantity UOM
#4 40 1/4 0.0870 NFS4440 In Stock $0.03825/EA EA
#5 40 5/16 0.3125 NFS4540 3-5 Working Days $0.08173/EA EA
#6 32 5/16 0.1020 NFS4632 In Stock $0.03175/EA EA
#8 32 11/32 0.1170 NFS4832 In Stock $0.0445/EA EA
#8 36 11/32 0.1170 NFS4836 3-5 Working Days $0.23049/EA EA
#10 24 3/8 0.1170 NFS4102 In Stock $0.0436/EA EA
#10 32 3/8 0.1170 NFS4103 In Stock $0.04344/EA EA
#12 24 7/16 0.1480 NFS41220000 In Stock $0.08435/EA EA
1/4 20 7/16 0.2120 NFS40250000 In Stock $0.05435/EA EA
1/4 28 7/16 0.2120 NFS4025NF00 In Stock $0.09734/EA EA
5/16 18 1/2 0.2580 NFS40310000 In Stock $0.07613/EA EA
5/16 24 1/2 0.2580 NFS4031NF00 In Stock $0.14017/EA EA
3/8 16 9/16 0.32 NFS40370000 In Stock $0.11004/EA EA
3/8 24 9/16 0.32 NFS4037NF00 In Stock $0.3809/EA EA
7/16 14 11/16 0.3650 NFS40430000 In Stock $0.24655/EA EA
7/16 20 11/16 0.3650 NFS4043NF00 In Stock $0.21956/EA EA
1/2 13 3/4 0.4270 NFS40500000 In Stock $0.2378/EA EA
1/2 20 3/4 0.4270 NFS4050NF00 In Stock $0.24683/EA EA
9/16 12 7/8 0.4730 NFS40560000 In Stock $0.98999/EA EA
9/16 18 7/8 0.4730 NFS4056NF00 In Stock $2.22144/EA EA
5/8 11 15/16 0.5350 NFS40620000 In Stock $0.4523/EA EA
5/8 18 15/16 0.5350 NFS4062NF00 In Stock $0.71494/EA EA
3/4 10 1 1/8 0.6170 NFS40750000 In Stock $0.67421/EA EA
3/4 16 1 1/8 0.6170 NFS4075NF00 In Stock $1.03161/EA EA
7/8 9 1 5/16 0.7240 NFS40870000 In Stock $1.18374/EA EA
7/8 14 1 5/16 0.7240 NFS4087NF00 In Stock $2.87146/EA EA
1 8 1 1/2 0.8310 NFS41000000 In Stock $1.65922/EA EA
1 14 1 1/2 0.8310 NFS4100NF00 In Stock $3.02808/EA EA
1 1/8 7 11/16 0.9390 NFS41120000 In Stock $4.8113/EA EA
1 1/4 7 1 7/8 1.03 NFS41250000 In Stock $4.70175/EA EA
1 1/4 12 1 7/8 1.03 NFS4125NF00 In Stock $13.83979/EA EA
1 3/8 6 2 1/16 1.38 NFS41370000 In Stock $8.90855/EA EA
1 1/2 6 2 1/4 1.2450 NFS41500000 In Stock $10.96458/EA EA