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Small hexagonal steel nuts with yellow zinc coating

Zoro Select

Zoro Select Hex Nut 1/4"-28 Grade 8 Zinc Yellow 7/32

SKU CH-PBPK-5DTZY

Grade 8 steel hex nut with UNF 1/4"-28 threads, zinc yellow finish, 7/32 in height, 100 per pack

  • TypeNuts
  • Grade 8 steel delivers high tensile strength
  • UNF 1/4"-28 fine thread ensures precise engagement
  • Zinc yellow finish resists corrosion in harsh environments
  • ASME B 18.2.2 dimensional standard guarantees consistent fit
  • 100-piece pack covers multiple fastening tasks

Hex Nut 1/4"-28 Grade 8

Zoro Select Hex Nut 1/4"-28 Grade 8 Zinc Yellow 7/32 is a steel fastener with UNF fine thread. It meets ASME B 18.2.2 dimensional standards and carries a Rockwell hardness of C33 to C39. The zinc yellow finish provides corrosion resistance. Packaged in quantities of 100 for production or maintenance use.

Fine thread UNF 28 TPI fit

The 1/4"-28 thread pitch requires matching UNF bolts or studs for proper engagement. Grade 8 strength suits high clamp load applications where Grade 5 is insufficient. The 7/16 inch hex width fits standard wrenches or sockets. Right hand thread direction follows common assembly practice.

Grade 8 strength headroom

Rockwell C33 to C39 hardness supports demanding tensile and proof load requirements. The 7/32 inch hex height allows standard socket engagement. Not suited for environments requiring stainless or plated alloy corrosion performance. Buyers needing metric threads or left hand rotation must select a different part.

Highlights

  • Grade 8 steel delivers high tensile strength
  • UNF 1/4"-28 fine thread ensures precise engagement
  • Zinc yellow finish resists corrosion in harsh environments
  • ASME B 18.2.2 dimensional standard guarantees consistent fit
  • 100-piece pack covers multiple fastening tasks

Specifications

BrandZORO SELECT
TypeNuts

Questions about this item

What is the Rockwell hardness range of the Grade 8 steel used in these 1/4"-28 hex nuts?

The nuts are made from Grade 8 steel with a Rockwell hardness of C33 to C39, providing high strength for demanding fastening applications.

How much heat does the zinc yellow finish add during continuous operation?

The zinc yellow finish is a passive coating that does not generate heat; temperature rise depends entirely on the mechanical load and friction in the joint.

Which wrench size fits the 7/16 inch hex width of these nuts?

A 7/16 inch wrench or socket is required to install or remove these hex nuts.

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