Hobson KBHG5PC0250300 1/4" x 3" UNC Hex Bolt and Nut, Grade 5, Plain

This Hobson UNC hex bolt and nut is 1/4" x 3", grade 5, with a plain finish. It is supplied as a pack of 150.

In the Hobson stock list, bolt and nut (kit) part codes start with K (manufacturer-stated).

Hobson lists grade 5 as high tensile, and its class and grade chart pairs imperial grade 5 with metric class 8.8 (manufacturer-stated).

The Hobson acronym list defines UNC as Unified National Coarse Thread and TPI as threads per inch (manufacturer-stated). The threads per inch shown are from the Hobson thread table, for the sizes it lists.

For the items it lists, the Hobson High Tensile Stock List, April 2011 gives the heading Grade 5 AS2465 (manufacturer-stated).

The stock list also gives a pack weight for the items it lists (manufacturer-stated). Pack weights are shown only where the stock list pack quantity matches the supplier pack quantity.

Proof load and minimum tensile strength come from the Hobson head-marking guide for the class or grade and size range (manufacturer-stated).

Spanner sizes (A/F) are from the Hobson spanner selection chart (manufacturer-stated).

Where this product is used

• Bolt and nut sets for joining parts through a clearance hole
• Hex head tightened with a spanner or socket
• Choose length and thread form to suit the parts being joined

Features

• 1/4" x 3" UNC hex bolt and nut
• Grade 5, Plain finish
• Supplied as a pack of 150
• Proof load and minimum tensile strength by size, from the Hobson guide (manufacturer-stated)
• Spanner size (A/F) by size, from the Hobson spanner chart (manufacturer-stated)
• Supplied as a bolt and nut

Key specifications

Selecting the right option

Choose the thread form first: the nut must match the bolt in thread form, diameter and pitch. Sizes are nominal diameters in inches; compare the threads per inch in the table with your nut. Length is measured from under the head to the end of the bolt. Strength figures are the class or grade minimums from the Hobson head-marking table, so treat them as the minimum for the class or grade and not a test result for the item (manufacturer-stated). For the bolt on its own: see Hobson UNC Hex Bolt, Grade 5, Plain, 1/4" to 7/16" x 3/4" to 6".

Related products

Related hex bolts: Hobson UNC Hex Bolt and Nut, Grade 5, Plain, 1/4" to 7/16" x 3/4" to 6", Hobson UNC Hex Bolt, Grade 5, Plain, 1/4" to 7/16" x 3/4" to 6" and Hobson UNC Hex Bolt and Nut, Grade 8, Plain, 5/16" to 1-1/2" x 3/4" to 10".