S-91875A284 4-48 Cap Nuts
Cap Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
- Precise Class 2B thread fit ensures smooth assembly and reliable fastening without cross-threading issues
- Fine UNF threading (4-48) provides enhanced vibration resistance and superior load distribution
- Standard external hex drive enables quick installation with common tools while preventing tool slippage
- Compact 1/4" profile offers space-saving design for applications with limited clearance
- Full RoHS 3 compliance meets international environmental standards for safe industrial use
- Right-hand threading design ensures compatibility with standard assembly procedures and equipment
Professional Applications & Engineering Value
This 4-48 UNF fine thread cap nut delivers exceptional engineering value through its zinc-plated steel construction and Class 2B thread fit. The combination of fine threading and precise manufacturing addresses critical industrial challenges including vibration-induced loosening and corrosion degradation. The external hex drive configuration provides reliable torque transmission during installation, while the standard cap nut profile ensures compatibility across various assembly systems. Ideal for precision equipment, machinery, and electronic enclosures, this fastener maintains structural integrity under demanding conditions, offering engineers a durable fastening solution that reduces maintenance frequency and improves overall system reliability.
Specification Summary & Compliance
Manufactured to precise inch measurement standards with 1/4" width and 5/32" thread depth. Features UNF fine thread type with Class 2B thread fit tolerance for consistent performance. The right-hand thread direction follows industry standards, while the construction meets RoHS 3 (2015/863/EU) compliance with exemption 6(a)-I for lead as an alloying element in steel, ensuring environmental responsibility without compromising mechanical properties.
