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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.
    Super-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
    Super-Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		1/4"7/16"21/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A16000000
    5/16"-18
    		9/32"1/2"25/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A1700000
    3/8"-16
    		5/16"9/16"15/32"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A18000000
    7/16"-14
    		21/64"11/16"33/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A19000000
    1/2"-13
    		11/32"3/4"35/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A20000000
    5/8"-11
    		7/16"15/16"43/64"Buna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A21000000
    M6 × 1 mm5.5 mm10 mm8 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A11000000
    M8 × 1.25 mm6.5 mm13 mm10 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A12000000
    M10 × 1.5 mm8 mm16 mm12 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A13000000
    M12 × 1.75 mm9 mm18 mm14 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A14000000
    M16 × 2 mm10.5 mm24 mm17 mmBuna-N
    		EHEDG Certified
    		FDA Compliant 21 CFR 177.2600
    		97511A15000000
     

    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 5091339A11000000
    8-32
    		3/8"5/32"6,000-100 to 400UL 5091339A1150000
    10-24
    		3/8"5/32"6,000-100 to 400UL 5091339A1250000
    10-32
    		3/8"5/32"6,000-100 to 400UL 5091339A1200000
    1/4"-20
    		7/16"7/32"6,000-100 to 400UL 5091339A1300000
    1/4"-28
    		7/16"7/32"6,000-100 to 400UL 5091339A1350000
    5/16"-18
    		1/2"17/64"6,000-100 to 400UL 5091339A1400000
    5/16"-24
    		1/2"17/64"6,000-100 to 400UL 5091339A1450000
    3/8"-16
    		9/16"21/64"6,000-100 to 400UL 5091339A1500000
    3/8"-24
    		9/16"21/64"6,000-100 to 400UL 5091339A1550000
    7/16"-20
    		11/16"3/8"6,000-100 to 400UL 5091339A1600000
    1/2"-13
    		3/4"27/64"6,000-100 to 400UL 5091339A1650000
    1/2"-20
    		3/4"27/64"6,000-100 to 400UL 5091339A1700000
    5/8"-18
    		15/16"35/64"6,000-100 to 400UL 5091339A1750000
     

    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 508A90448A11000000
    M4 × 0.7 mm73.26,000-100 to 400UL 508A90448A1200000
    M5 × 0.8 mm846,000-100 to 400UL 508A90448A1300000
    M6 × 1 mm1056,000-100 to 400UL 508A90448A1400000
    M8 × 1.25 mm136.36,000-100 to 400UL 508A90448A15000000
    M10 × 1.5 mm1786,000-100 to 400UL 508A90448A16000000
     

    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
    Image of Product. Bottom orientation. Cap Nuts. High-Profile Sanitary Cap Nuts.
    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
    		97513A101000000
    3/4"-10
    		29/32"1"4 5/32"Buna-N
    		FDA Compliant 21 CFR 177.2600
    		97513A10200000
     

    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 5090215A01000000
    8-32
    		1/2"7/32"6,000-100 to 400UL 5090215A4100000
    10-24
    		1/2"7/32"6,000-100 to 400UL 5090215A0110000
    10-32
    		1/2"7/32"6,000-100 to 400UL 5090215A4110000
    1/4"-28
    		5/8"7/32"6,000-100 to 400UL 5090215A4290000
    3/8"-16
    		5/8"7/32"6,000-100 to 400UL 5090215A0310000
    3/8"-24
    		5/8"7/32"6,000-100 to 400UL 5090215A4310000
     

    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
    Image of Product. Bottom orientation. Cap Nuts. Sealing Cap Nuts.
    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 4001,20090194A11000000
    10-32
    		3/16"3/8"25/64"Silicone Rubber
    		-80 to 4001,20090194A1200000
    1/4"-20
    		1/4"7/16"15/32"Silicone Rubber
    		-80 to 4001,20090194A1300000
    3/8"-16
    		3/8"5/8"5/8"Silicone Rubber
    		-80 to 4001,20090194A1400000
    1/2"-13
    		1/2"3/4"13/16"Silicone Rubber
    		-80 to 4001,20090194A1500000
     
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