Hobson UNC Hex Bolt and Nut, 1-1/4 / 6-1/2

The Hobson UNC hex bolt and nut range has 78 items (Grade 8, plain): 1/4" to 1-1/2", in lengths of 1/2" to 12". Each item is a hex bolt supplied with a matching nut. Grade 8 is high tensile, and corresponds to metric class 10.9.

UNC means Unified National Coarse Thread and TPI means threads per inch. Spanner sizes are the width across flats (A/F), using its grade 5 and 8 column. Pack quantity is shown for each item.

Where this product is used

• Clamping parts together through a clearance hole, with the nut supplied
• One item covers both the bolt and the nut of a joint
• Fixing with a flat washer under the head or nut to spread the load

Features

• 78 items: 1/4" to 1-1/2", 1/2" to 12" long
• UNC thread, hex head
• Grade 8, plain
• Nut supplied with each bolt
• Minimum tensile strength for each size, shown for each size

Key specifications

Choosing the right option

Choose the thread form first: the bolt and its nut must match in thread form, diameter and pitch. Sizes are nominal diameters in inches; compare the threads per inch shown for each item with your nut. Length is measured from under the head to the end of the bolt, so choose size and length together. The nut is supplied with each bolt. Spanner size is the width across flats of the head and nut.

Related bolts: Hobson UNC Hex Bolt and Nut, Grade 5 and Grade 8, Zinc, 5/16", 3/8" and 5/8" x 1" to 2-1/4", Hobson UNC Hex Bolt, Grade 8, Plain, 1/4" to 2" x 1/2" to 20" and Hobson UNC Hex Bolt, Grade 8, Zinc, 1/4" to 1" x 1/2" to 10".