S-91339A155 3/8"-24 UL 50 Sealing Nuts

Sealing Nuts

1068FA00019 Sealing Nuts
1068FA00019 Sealing Nuts

Image may differ from product. See technical specification for details.

Part No.
Part No. 1068FA00019
Equivalent to mcmaster :
91339A155

Basic Information

System of Measurement Inch
Nut Type Sealing, Hex
Specifications Met UL 50

Dimension Parameters

Width 9/16"
Height 21/64"

Thread Parameters

Thread Type UNF
Thread Size 3/8"-24
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Material & Strength Parameters

Material 18-8 Stainless Steel

Temperature & Environment Parameters

Seal Temperature Range -100° to 400° F

Installation & Application Parameters

Maximum Pressure 6000 psi

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/10/2022, 224 SVHC) Compliant

Cap Parameters

Seal Material Silicone Rubber
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior sealing performance with silicone rubber seal that prevents leaks in demanding industrial applications
  • Exceptional pressure resistance up to 6000 psi for reliable performance in high-pressure systems
  • Wide temperature compatibility from -100° to 400° F maintains seal integrity in extreme environments
  • Corrosion-resistant 18-8 stainless steel construction ensures long-term durability and reliability
  • UL 50 certification guarantees compliance with rigorous safety and performance standards
  • Precision Class 2B thread fit provides smooth installation and secure fastening
  • Environmental compliance with REACH and RoHS 3 regulations for sustainable operations

Professional Applications & Engineering Value

This heavy-duty 3/8"-24 UNF sealing nut delivers exceptional engineering value in critical sealing applications where failure is not an option. The combination of 18-8 stainless steel construction and silicone rubber seal creates a robust barrier against fluid and gas leaks in high-pressure systems up to 6000 psi. The fine thread UNF design with Class 2B fit ensures precise engagement and vibration resistance, while the external hex drive style facilitates easy installation with standard tools. Ideal for hydraulic systems, industrial machinery, and processing equipment operating in temperature extremes from -100° to 400° F, this UL 50 certified sealing nut provides reliable performance where conventional fasteners would fail, reducing maintenance costs and downtime in demanding industrial environments.

Specification Summary & Compliance

This sealing nut features precision 3/8"-24 UNF fine threads with Class 2B thread fit for optimal engagement and sealing performance. Manufactured to meet UL 50 specifications for safety and reliability, the component is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations. The standard hex profile (9/16" width) and 21/64" height ensure compatibility with industry-standard tools and applications requiring right-hand thread direction.

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