What are flat nuts called?

The term flat nut is also sometimes used to refer to a jam nut, or half nut. This is a thinner version of a standard hex nut, designed to be tightened, or “jammed” against the primary nut. The two nuts together form a friction locking nut. The jam nut should be tightened first and the main nut then fitted over the top.

What size is a 7/16 nut?

Hex Nut: Dimensions & Specifications

Hex Nut Dimensions (ANSI/ASME B18.2.2)
3/8 0.3750 0.320
7/16 0.4375 0.365
1/2 0.5000 0.427
9/16 0.5625 0.473

What is a thin hex nut called?

Jam nuts, also known aptly as thin nuts, are low profile hex nuts about 2/3rd the thickness of a standard hex finish nut. The jam nut essentially acts as the “other object,” as the two nuts are tightened against each other.

What are some sizes of nuts?

US Nut Size Table

Size Diameter* Height
Hex Nut Hex Nut
1/2″ 3/4″ 7/16″
9/16″ 7/8″ 31/64″
5/8″ 15/16″ 35/64″

Which type of nut is used for hand tightening?

A knurled head thumb nut or thumb nut has a knurled outside surface rather than a hex, which facilitates tightening by hand. Often used in decorative finishes or applications.

What is a 7/16 nut?

Finished Hex Nuts
Bolt Dimensions
7/16 11/16 3/8
1/2 3/4 7/16
9/16 7/8 31/64

What size bolt does a 7/16 wrench fit?

Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt.

US Bolts
Bolt Diameter (in) Head and Wrench Size (in)
1/4 7/16 or 3/8
5/16 1/2
3/8 9/16

How do jam nuts work?

The jam nut essentially acts as the “other object”, as the two nuts are tightened against each other. Then the other nut is screwed down on top of the first nut. The inner nut is then slackened back and tightened against the outer nut. Jam nuts can also be used in situations where a threaded rod must be rotated.

How do I know what size nut to buy?

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. If the nut is US standard, count the smallest lines on the tape measure in sixteenths. Add the sixteenths together to find the size.

What nuts are used to lock joints?

Jam nuts are used as a locknut to prevent vibration from loosening a bolted joint. Before nuts were developed with “self‑locking” capabilities, two jam nuts would be tightened against each other so that nuts won’t loosen over time.

Where can I buy 7/16 in nuts?

7/16 in – Nuts – Fasteners – The Home Depot Get free shipping on qualified 7/16 in Nuts or Buy Online Pick Up in Store today in the Hardware Department. #1 Home Improvement Retailer

What is a Grade 2 steel bolt nut?

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. They’re Grade 2 steel, so they can be used for fastening panels and other light duty fastening applications These nuts are about 25% stronger than medium-strength steel thin hex nuts. Available in inch thread sizes.

What grade are coupling nuts made of?

Made from Grade 5 steel, these inch-sized coupling nuts are suitable for most applications. Made from Grade 8 steel, these nuts are about 25% stronger than medium-strength steel coupling nuts. Furnished in inch thread sizes.

What are the dimensions of hex nuts?

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