How do you size a hex nut?

Stretch the tape measure across the nut’s diameter to the flat-side directly across from the one your pulling from. If the nut is metric, count the number of lines on the tape measure to find the measurement. If you count 9 lines, the size is a 9-mm (millimeter) nut.

What are slotted hex nuts used for?

Used for general purpose fastening and locking, slotted hex nuts can be used with cotter pins or safety wire through the slots and through the hole drilled shank of the fastener.

What is slotted hex nut?

Slotted Hex Nuts are hex nuts with slots protruding from the top, similar to castle nuts. To use a slotted nut, a hole is drilled through the threaded portion of a bolt or stud. A cotter pin is then placed through the slots and hole and deformed so it cannot easily be removed.

What is a Grade 5 hex nut?

GRADE-8. Description. A finished hex nut made from steel with a maximum carbon content of 0.55%, a minimum manganese content of 0.30% and a maximum sulfur content of 0.05%.

What is the difference between a castle nut and slotted nut?

Castellated nuts are formed with a round section at the top where the slots are located. Slotted nuts do not have this rounded modification. The flat sides of slotted nuts extend fully from the top to the bottom of the nut.

How does a castellated nut work?

A castellated nut, sometimes referred to as a castle nut, is a nut with slots (notches) cut into one end. This pin prevents the nut from turning and loosening. Compared with slotted nuts, castellated nuts allow the cotter pin to be confined closer to the margins of the nut itself, providing added secureness.

Can you use Grade 5 nuts on Grade 8 bolts?

Yes, but nuts and bolts have very different failure mechanisms. With Grade 5, A325 and metric 8.8 bolts, low strength nuts can be safely used unless the code prohibits them. With the stronger Grade 8, A490 and metric 10.9, high strength nuts have to be used and these bolts can strip the threads out of mild steel nuts.

Are hex nuts and lock nuts the same?

Nut manufacturers have developed nuts that are designed to eliminate the need for double-nutting. These styles of nuts are called “lock nuts”. A lock nut is typically a hex nut that has a built in feature that increases the nut’s resistance to loosening.

What to use to secure hex slotted nuts?

Secure these hex slotted nuts by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance. They’re not recommended for use on parts exposed to high vibration because the pin is prone to shearing under prolonged stress. Height includes the slots. Cotter pins are not included.

What are the dimensions of a hex nut bolt?

Heavy Hex Nuts Bolt Dimensions Dimensions Diameter Inches Across Flats Thickness 1/4 1/2 15/64 5/16 9/16 19/64 3/8 11/16 23/64

How big should a tapped hole be on a hex nut?

Tapped hole shall be countersunk on the bearing face or faces. The maximum countersink diameter shall be the thread basic (nominal) major diameter plus 0.030 in. for 3/8 in. nominal sire nuts and smaller, and 1 .O8 times the basic major diameter for nuts larger than 3/8 in.

What are the dimensions of Grade 2 nuts?

Grade-2 nuts are for use with any low carbon bolt or screw that is not heat-treated, with a specified minimum tensile strength of 74,000 psi or less. A six-sided internally threaded fastener whose thickness is .875 where D is the nominal nut size and 1.5D is their width across the flats.