Fixaball UNF 1/4" Hex Bolt Set Screws High Tensile 8.8 Zinc BZP

For UNF fastening applications, these Fixabal 1/4" hexagon head bolts and set screws are supplied in high tensile grade 5 steel, comparable with metric 8.8, with a zinc/BZP/Cr3 finish. The 1/4" UNF thread has 28 T.P.I. and the range includes both fully threaded sets and partially threaded bolts.

Fully threaded options are supplied in shorter lengths, while longer sizes are partially threaded with a plain shank. This selection suits applications requiring a 1/4"-28 UNF fastener with a hexagon head for use with a nut and washer.

Key features

• Thread size: 1/4" UNF
• Thread pitch: 28 T.P.I.
• Head type: hexagon head
• Material: medium carbon steel
• Finish: zinc/BZP/Cr3
• Grade: grade 5 high tensile, comparable with metric 8.8
• Available as fully threaded sets (FT) and partially threaded bolts (PT)

Available options

• 1/4"-28x1/2" (FT)
• 1/4"-28x5/8" (FT)
• 1/4"-28x3/4" (FT)
• 1/4"-28x7/8" (FT)
• 1/4"-28x1" (FT)
• 1/4"-28x1 1/4" (PT)
• 1/4"-28x1 1/2" (PT)
• 1/4"-28x1 3/4" (PT)
• 1/4"-28x2" (PT)
• 1/4"-28x2 1/4" (PT)
• 1/4"-28x2 1/2" (PT)
• 1/4"-28x2 3/4" (PT)
• 1/4"-28x3" (PT)
• 1/4"-28x3 1/2" (PT)
• 1/4"-28x4" (PT)
• 1/4"-28x4 1/2" (PT)
• 1/4"-28x5" (PT)
• 1/4"-28x6" (PT)

Specifications

• UNC and UNF high tensile standard is marked with a "5"
• Unified National Fine (UNF) thread form with a 60 degree flank angle, rounded roots and flat crests
• For partially threaded bolts, thread length is given as diameter x 2.5

Rackhams Reference : CPN83Y4F6T