What size head is on a 3/8 bolt?

How do you tell what size a bolt head is?

To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.

What is a 3/8 bolt?

Grade 8 Hex Bolt Yellow Zinc Plated: A Grade 8 hex bolt has a greater tensile strength than a Grade 5 and Grade 2 hex bolt. … They are designed for use in high stress applications.

What size wrench fits a 3/8 bolt?

US Bolt Head/Wrench Size

Bolt Diameter Head and Wrench Size
Hex Bolt – Lag Bolt – Square Bolt Heavy Hex Bolt
3/8″ 9/16″
7/16″ 5/8″
1/2″ 3/4″ 7/8″

How can you tell if a bolt is metric or standard?

Telling the difference between a metric and imperial bolt is easy. If the bolt has lines on the head its standard or imperial. If the bolt has numbers on the head then its metric.

How are U bolt sizes measured?

The length (L) is measured from end of bolt to inside of the bend, while the width (C) is measured between the legs. … Since round U-bolts can be measured differently, we recommend communicating U-bolt dimensions through the use of a detailed drawing.

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What size bolt has a 8mm head?

Metric Shoulder Bolt Dimensions

Shoulder Diameter (A) Thread (C) Head Diameter (E)
8mm 6mm x 1.0 13mm
10mm 8mm x 1.25 16mm
12mm 10mm x 1.5 18mm
16mm 12mm x 1.75 24mm

What is the torque on a 3/8 bolt?

ASTM A449 / SAE Grade 5*

Bolt Size TPI Tightening Torque (ft lbs)
Plain
516 18 17
38 16 31
716 14 49

What size bolt has a 22mm head?

Size Chart

Bolt size Size Tolerance
7/16″BSW 20.89
21mm 21.06
M14 22mm 22.06
1/2″UNC 7/8″ 22.28

What number is 3/8 inch screw?

A 3/8″-16 screw is a machine screw, the “3/8” is the diameter and the “16” is the number of threads per inch. This screw will thread into a nut or threaded hole.

What size is a 3/8 bolt in metric?

Metric / Standard Wrench Conversion Chart

Bolt Diameter Metric Standard
3/8″ 14mm 9/16″
7/16″ 16mm 5/8″
1/2″ 19mm 3/4″
9/16″ 21mm 13/16″

What is the shear strength of 3/8 bolt?

A 3/8-inch bolt of this type is rated to 7,000 pounds in 6,000 psi concrete (basically granite) and 4,000 pounds in 2,000 psi concrete (hard sandstone).