25th November 2019

hotrodhotline

What does 8.8 mean on the head of a bolt?

If you have ever looked a metric hex bolt you might notice the markings 8.8, 10.9 or 12.9 this does not mean grade 8,10 or 12. The grade 8.8 refers to the tensile strength which is generally 116,000 psi, grade 10.9 is generally 150,000 and grade 12.9 is generally 175,000 psi.

In respect to this, what size is a m8 screw?

Tap size	Basic major dia (mm)	Basic major dia (inch)
M6 x 1	6mm	.2362
M8 x 1.25	8mm	.3150
M8 x 1	8mm	.3150
M10 x 1.5	10mm	.3937

What is a m8 bolt in inches?

Inch Threads vs. Metric Threads

Inch Bolts	Metric Nuts
5/16″-18	M8 x 1.0
3/8″-16	M10 x 1.5
7/16″-14	M12 x 1.75
1/2″-13	M14 x 2

How do you measure the size of a bolt?

Diameter is in either Inches ( not decimal ) or Millimeter. Second measure the pitch Pitch is threads / per unit. Inches are measured threads per inches. Third measure length Length is measured from behind the head to end, ( except for flathead is measured total length ) .

What does 12.9 mean on a bolt?

12.9 grade steel means that a component manufactured form this grade of steel has 12X100 N/mm^2 tensile strength and 9 is a multiplier means 90% of 1200 = 1080 N/mm^2 is the yield strength of the grade. Similarly we also have grade 8.8 , 10.9 , 6.8 also.

What is the metric equivalent of a Grade 8 bolt?

Approximate Equivalency Chart Metric/US Roughly Equivalent US Bolt Materials

Metric Nut Class	SAE J429Normally Used	Grades
8.8	8	5
9.8	9	5+
10.9	10or 12	8
12.9	10or 12	.

What are the different grades of bolts?

SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength

SAE Grade	Size Range (in)	Minimum Proof Strength (10³ psi)
5	1/4 - 1 1 1/8 - 1 1/2	85 74
5.2	1/4 - 1	85
7	1/4 - 1 1/2	105
8	1/4 - 1 1/2	120

What does class 10.9 bolt mean?

Our metric grade 10.9 bolts meet ASTM A324 grade BD and SAE J429, grade 8 standards. The yield strength of the bolts is 940 and the tensile strength is 1040 MPa. U-Bolt-It is a leading distributor and manufacturer of high quality metric grade 10.9 bolts.

What is the hardness of a Grade 8 bolt?

Materials - Medium Carbon Steel Bolts in SAE J429 (Grades 2, 5 and 8)

Grade	Nominal size, inches	Core hardness, Rockwell
2	¾ - 11/2 inch	B70 to B100
5	¼ - 1 inch	C25 to C34
5	1 - 1-1/2 inches	C19 to C30
8	¼ - 1-1/2 inches	C33 to C39

What is a 10.9 grade bolt?

Bolt Grade Markings and Strength Chart

Grade and Material	Mechanical Properties
Grade and Material	Proof Load (psi)
Class 8.8 Medium carbon steel, quenched and tempered	600
Class 10.9 Alloy steel, quenched and tempered	830
Class 12.9 Alloy steel, quenched and tempered	970

What is HT bolt?

Most often, customers looking for a high tensile bolt may just be looking for the 8.8 grade. · S- An S grade refers to the tensile strength of industrial fasteners, or the maximum amount of stress these fasteners and fixing can withstand before they begin to break or fail.

What is m8 thread size?

Tap size	Basic major dia (mm)	Basic major dia (inch)
M6 x 1	6mm	.2362
M8 x 1.25	8mm	.3150
M8 x 1	8mm	.3150
M10 x 1.5	10mm	.3937

How big is a m16 bolt?

For example, a bolt specified as "M6-1.0 x 30" fits a 6.0-mm diameter hole. The "M" indicates that it is a metric size. Keep in mind that metric bolts are usually slightly smaller than their specified diameter. For example, a M16 bolt is often 15.97 mm in diameter.

What does m8 mean on a bolt?

The M8 will measure about 8 mm in diameter, more likely, just a touch undersize, (.31496") The M10, about 10 mm in diameter, (.3937") and the M12 about 12 mm in diameter, (.4724"). The "M" designates the bolt is Metric and the number after the M indicates the size. The number after that is the length.

What is bolt diameter?

To Determine the Size of a Bolt. First measure the diameter. Diameter is in either Inches ( not decimal ) or Millimeter. Second measure the pitch Pitch is threads / per unit. Inches are measured threads per inches.

What do you mean by m10?

M10 means a 10 millimeter outer diameter for the bolt or whatever piece it is; M12 means 12 millimeters. The part after the 'x' is the pitch -- how many mm a thread is wide. To figure out which you have, you can measure the existing part with calipers and a thread gauge.

Are Grade 8 bolts rust proof?

According to K-T Bolt Manufacturing Inc., Grade 8 bolts "are used in demanding applications such as automotive suspensions. Grade 8 bolts have 6 evenly spaced radial lines on the head." Unlike stainless steel, which is highly resistant to corrosion, steel, however reinforced, will oxidize over time and rust.

What is the difference between metric and standard bolts?

M 10 x 1.5 is a metric bolt with a 10 mm nominal diameter and 1.5 mm pitch. The standard American bolt is defined by the inch system designation. For both metric and standard bolts, the head size is the distance across the flats. For standard bolts, the head size is measured in inches or fractions of an inch.

What does CW mean on a bolt head?

The “8.8” means a metric bolt from medium strength steel. A “Class 5” would be the English equivalent. The “CW” means 'Cold Worked' - where the bolt and threads are formed under extreme pressure and without any preheating.

What wrench to use on the size of bolt?

US Bolt Head/Wrench Size

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

What is yield strength of bolt?

The proof load represents the usable strength range for certain standard fasteners. By definition, the proof load is an applied tensile load that the fastener must support without permanent deformation. Figure 1 illustrates a typical stress-strain relationship of a bolt as a tension load is applied.

What is the head size of an m10 bolt?

Metric Bolt Head/Wrench Size

Bolt Diameter (mm)	Head/Wrench Size (mm)
Bolt Diameter (mm)	ANSI/ISO	DIN
8	13	13
10	16	17
12	18	19

What is ultimate tensile strength?

Ultimate tensile strength is measured by the maximum stress that a material can withstand while being stretched or pulled before breaking. In the study of strength of materials, tensile strength, compressive strength, and shear strength can be analyzed independently.

What does 8.8 mean on the head of a bolt?

Write Your Answer

Rate

Similar Asks

Bookmark

Share