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    45 Products

    Sanitary Cap Nuts

    With extremely smooth sides and rounded edges, these nuts are free of crevices where bacteria can grow. Use them to cover and protect exposed threads while fastening parts together. Nuts are certified by EHEDG to meet sanitary design standards. They have a Buna-N seal on the base that keeps liquid, debris, and other contaminants off the threads. The seal is made with metal and chemical additives, so you can find it with a metal detector or X-ray machine if it falls into your line. Also known as acorn nuts, these have a domed head to create a finished look.
    Stainless Steel
    Image of Product. Front orientation. Cap Nuts. Sanitary Cap Nuts.
    Highly-Corrosion-Resistant 316 Stainless Steel—Won't corrode from frequent washdowns and can stand up to the harshest cleaners and detergents.
    Thread Size
    Thread
    Dp.
    Wd.
    Ht.
    Seal
    Material
    Certification
    Food Industry Std.
    Each
    Highly-Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		1/4"7/16"21/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    5/16"-18
    		9/32"1/2"25/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		0000000000000
    3/8"-16
    		5/16"9/16"15/32"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    7/16"-14
    		21/64"11/16"33/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    1/2"-13
    		11/32"3/4"35/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    5/8"-11
    		7/16"15/16"43/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    M6 × 1 mm5.5 mm10 mm8 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    M8 × 1.25 mm6.5 mm13 mm10 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    M10 × 1.5 mm8 mm16 mm12 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    M12 × 1.75 mm9 mm18 mm14 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
    M16 × 2 mm10.5 mm24 mm17 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
     

    Stainless Steel Hex Sealing Nuts

    Image of Product. Front orientation. Sealing Nuts. Stainless Steel Hex Sealing Nuts.
    These nuts have good chemical resistance and may be mildly magnetic. They have a molded silicone seal that prevents leaks and seals out contaminants. They meet UL 50 for use on enclosures.
    Thread
    Size
    Wd.
    Ht.
    Max. Pressure,
    psi
    Seal Temp.
    Range, ° F
    Specs.
    Met
    Each
    18-8 Stainless Steel
    6-32
    		5/16"9/64"6,000-100 to 400UL 5000000000000000
    8-32
    		3/8"5/32"6,000-100 to 400UL 500000000000000
    10-24
    		3/8"5/32"6,000-100 to 400UL 500000000000000
    10-32
    		3/8"5/32"6,000-100 to 400UL 500000000000000
    1/4"-20
    		7/16"7/32"6,000-100 to 400UL 500000000000000
    1/4"-28
    		7/16"7/32"6,000-100 to 400UL 500000000000000
    5/16"-18
    		1/2"17/64"6,000-100 to 400UL 500000000000000
    5/16"-24
    		1/2"17/64"6,000-100 to 400UL 500000000000000
    3/8"-16
    		9/16"21/64"6,000-100 to 400UL 500000000000000
    3/8"-24
    		9/16"21/64"6,000-100 to 400UL 500000000000000
    7/16"-20
    		11/16"3/8"6,000-100 to 400UL 500000000000000
    1/2"-13
    		3/4"27/64"6,000-100 to 400UL 500000000000000
    1/2"-20
    		3/4"27/64"6,000-100 to 400UL 500000000000000
    5/8"-18
    		15/16"35/64"6,000-100 to 400UL 500000000000000
     

    Metric Stainless Steel Hex Sealing Nuts

    Image of Product. Bottom orientation. Sealing Nuts. Metric Stainless Steel Hex Sealing Nuts.
    Made of stainless steel, these metric nuts have good chemical resistance and may be mildly magnetic. They have a silicone seal that prevents leaks and seals out contaminants.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Max. Pressure,
    psi
    Seal Temp.
    Range, ° F
    Specs.
    Met
    Each
    18-8 Stainless Steel
    M3 × 0.5 mm62.86,000-100 to 400UL 508A00000000000000
    M4 × 0.7 mm73.26,000-100 to 400UL 508A0000000000000
    M5 × 0.8 mm846,000-100 to 400UL 508A0000000000000
    M6 × 1 mm1056,000-100 to 400UL 508A0000000000000
    M8 × 1.25 mm136.36,000-100 to 400UL 508A00000000000000
    M10 × 1.5 mm1786,000-100 to 400UL 508A00000000000000
     

    High-Profile Sanitary Cap Nuts

    Image of Product. Bottom orientation. Cap Nuts. High-Profile Sanitary Cap Nuts.
    Cover and protect 4" of exposed threads in food plants and other sanitary environments with these extra-long cap nuts. They are free of crevices where bacteria can grow and have a Buna-N seal on the base to keep liquid, debris, and other contaminants off the threads. The seal is made with metal and chemical additives, so you can find it with a metal detector or X-ray machine if it falls into your line. Nuts have a smooth, rounded head to create a finished look.
    Stainless Steel
    304 Stainless Steel—Won't corrode from frequent washdowns and can stand up to most cleaners and detergents.
    Thread
    Size
    Thread
    Dp.
    Wd.
    Ht.
    Seal
    Material
    Food Industry Std.
    Each
    304 Stainless Steel
    5/8"-11
    		29/32"7/8"4 5/32"Buna-N
    		FDA Compliant 21 CFR 177.2600
    		000000000000000
    3/4"-10
    		29/32"1"4 5/32"Buna-N
    		FDA Compliant 21 CFR 177.2600
    		00000000000000
     

    Sealing Cap Nuts

    Image of Product. Bottom orientation. Cap Nuts. Sealing Cap Nuts.
    Keep liquid, gas, debris, and other contaminants from seeping into or out of machinery, with no need for a separate O-ring. These nuts are often used outdoors to protect enclosures and other equipment from harsh weather. They also withstand high pressure, so they are useful for sealing pneumatic pumps and pressure valves. Also known as acorn nuts, they conceal protruding screw threads while fastening parts together and have a smooth, rounded head for a finished look.
    Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread
    Size
    Thread
    Dp.
    Wd.
    Ht.
    Seal Material
    Seal Temp.
    Range, ° F
    Max. Pressure,
    psi
    Each
    18-8 Stainless Steel
    8-32
    		5/32"5/16"5/16"Silicone Rubber
    		-80 to 4001,20000000000000000
    10-32
    		3/16"3/8"25/64"Silicone Rubber
    		-80 to 4001,2000000000000000
    1/4"-20
    		1/4"7/16"15/32"Silicone Rubber
    		-80 to 4001,2000000000000000
    3/8"-16
    		3/8"5/8"5/8"Silicone Rubber
    		-80 to 4001,2000000000000000
    1/2"-13
    		1/2"3/4"13/16"Silicone Rubber
    		-80 to 4001,2000000000000000
     

    Brass Hex Sealing Nuts

    Image of Product. Front orientation. Sealing Nuts. Brass Hex Sealing Nuts.
    These nickel-plated brass sealing nuts have good resistance to chemicals and salt water. A nickel plating provides additional corrosion resistance and a decorative metallic finish. They have a silicone seal that prevents leaks and seals out contaminants. All meet UL 50 for use on enclosures. Nuts are nonmagnetic.
    Thread
    Size
    Wd.
    Ht.
    Max. Pressure,
    psi
    Seal Temp.
    Range, ° F
    Specs.
    Met
    Each
    Nickel-Plated Brass
    6-32
    		1/2"7/32"6,000-100 to 400UL 5000000000000000
    8-32
    		1/2"7/32"6,000-100 to 400UL 500000000000000
    10-24
    		1/2"7/32"6,000-100 to 400UL 500000000000000
    10-32
    		1/2"7/32"6,000-100 to 400UL 500000000000000
    1/4"-28
    		5/8"7/32"6,000-100 to 400UL 500000000000000
    3/8"-16
    		5/8"7/32"6,000-100 to 400UL 500000000000000
    3/8"-24
    		5/8"7/32"6,000-100 to 400UL 500000000000000
     
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