What makes a grade 8 bolt a grade 8 bolt archive

What makes a grade 8 bolt a grade 8 bolt archive

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Grade 8 vs Grade 5 Bolts, Are Grade 8 bolts too brittle ?

11/3/2012· Have often heard "Grade 8 bolts are too brittle, don't use them on automotive projects". Well, judge for yourself...

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What is Grade 8 (bolts, metal) - Blacksmithing, General

17/5/2013· Grade 8 bolts are comprised of carbon alloy steel, thus giving them a high psi rating. Zinc or yellow zinc grade 8 bolts are available to resist corrosion. The factor that makes a grade 8 bolt different from a lower grade bolt is its preload strength.

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drilling hardened bolts - Practical Machinist

19/3/2015· I need to face the hexhead and drill a 3/4 grade 8 bolt. I have been told that drilling, cutting, etc. a grade 8 bolt should not be a problem, as long as I go "slowly". However, I have never worked (machined)with hardened, grade 8 or for that matter grade 5, bolts. I plan ...

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How to Cut a Grade-8 Bolt Our Pastimes

With the exception of aircraft-grade NAS hardware, Grade-8 bolts are the strongest bolts available. They are identified by five raised lines stamped onto the head of the bolt in a star pattern. Grade-8 bolts are used in applications where high tensile strength is required.

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What makes a grade 8 bolt a grade 8 bolt? - The Home

So the Grade 8 bolts are most likely Chromoly. The bolt maker is free to use any alloying agent they want to meet the Grade 8 spec (and in my experience, ultra-premium bolts like Unbrakos are far stronger than "normal" Grade 8 bolts), but Chromoly is the most

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Grade 8 Bolts - Coarse and Fine Thread - Grade 8 Nut and

Information and online shopping for grade 8 nuts, bolts and assortments in fine and coarse thread. A grade 8 bolt is stronger than the more commonly used grade 5. It is made of alloy steel and has six radial lines on the top of the bolt head.

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Bolt Depot - Selecting Fastener Materials - Steel Grades,

18-8 Stainless 18-8 refers to any stainless steel containing approximately 18% chromium and 8% nickel. This is the most common stainless designation for hardware. For information on 18-8 stainless steel material properties see our Material Grade Identification and Properties Chart.

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Grade 8 bolt hardness material equivalent

30/11/2017· I made some parts for a guy out of Grade 8 bolts because they had to be relatively hard, tensile strength was irrelevant. They worked fine and now he needs more but rather than using Grade 8 bolts I was thinking of using Pre-Hardened 4140. I cant find any data ...

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China Bolt & Nut, Bolt & Nut Manufacturers, Suppliers,

China Bolt & Nut manufacturers - Select 2020 high quality Bolt & Nut products in best price from certified Chinese Bolt manufacturers, ... ASTM A325 A325m A490 A490m Grade 5 8 DIN6914 8.8 10.9 Grade HDG Thread Bolts Structural Heavy Hex Bolts and ...

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High Tensile Bolts 8.8, Grade 8.8 Studs, Alloy Steel High

We offer these 8.8 Grade Bolts in a wide range of standards and sizes to fit the requirements of all our customers. Alloy Steel High-Tensile Class 8.8 Bolts, Grade 8.8 High Tensile Screws, High Tensile 8.8 Studs, ASTM F568 High Tensile Bolts 8.8, Grade 8.8

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The HD (Heavy Duty) Bolt - Product Information

With its expanding serrated base the HD bolt is the ideal fixing solution between heavy weight steel sections. The HD Bolt represents the optimum fixing solution when dealing with heavy weight steel sections.The unique pin locking mechanism and expanding base combine strength with a simple activation process.The only tools necessary are a hammer and spanner, rather than the specialist ...

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bolt identification and grade markings - Nucor Fastener

bolt identification and grade markings: SAE J429 Grade 2 ASTM A307 Grade A Interchangeability of Grade 2 and A307A Fasteners In general, since the minimum strength requirement of a Grade 2 is greater than that of an A307A, a Grade 2 can be successfully ...

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How a Bolt is Made - Portland Bolt & Manufacturing -

15/3/2011· Take a quick tour of our shop and follow an order of large anchor bolts through the manufacturing process. This video includes shearing, hot forging, threading, and

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Product Catalogue Bolts & Nuts

Fortress is a quality New Zealand brand conceived and distributed by MSL. Manufacturing Supplies Ltd (MSL) was the innovation of the company director in 1980 starting as a small operation in New Lynn, Auckland. It was his vision to meet industry demands for a

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How a Bolt is Made - Portland Bolt

Video Transcript Hello! My name is Al Fogel and Ive been the Operations Manager here at Portland Bolt since 1987. This is an inch and a quarter diameter by 48 inch long, galvanized F1554 grade 36 hex head anchor bolt. We just completed 356 of these anchor bolts for the Caney River Substation project in Howard, Kansas. ...

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Metric Bolt Grades and Strength Calculator

Metric bolt grades and strength calculator to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and stress area of metric bolts and screws made of carbon steel and alloy steel with designations 4.6, 4.8, 5.8, 8.8, 9.8, 10 ...

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Types of Bolts Hunker

Bolts are assigned various grades and these grades are usually stamped on the bolt's head for easy referral. If there are zero markings on the bolt head, it is usually because the bolt in question is of the lowest grade. A bolt with a low grade two is often manufactured ...

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What's the difference between an AN bolt and a Grade 5

What's the difference between an AN bolt and a Grade 5 Submitted by john.schwaner on Fri, 07/31/2009 - 08:34 If you work on aircraft long enough someone is going to ask you that question or something similar such as "Can I use a Grade 8 bolt to attach the ...

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Bolt Grades

Bolt Grades I have been on a quite a few online email lists over the last 7 years or so, basically since they first came out. From the original Jeep-L list to the XJ-list to the Rockcrawler.com board, a common question comes up time and time again. No, Im not ...

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Steel City Bolt - ASTM A307 Fastener Specification

The ASTM A307 fastener specification is the most commonly requested fastener grade. The full specification is available for purchase through ASTM International.Below is a brief overview, information of the approved nuts and some information on the washers used

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Can I harden a bolt - The Home Shop Machinist &

Grade 5 and grade 8 are not very hard. They are 'tough', 'durable'. Hard is 'brittle' You don't want brittle in a bolt. As such, they may not harden much either via heat treating. As mentioned they could be any alloy that fits the strength requirements and are not ...

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Are there stronger bolts? - Miller Welding Discussion

Nick, we use a Grade 9 at work. The only trouble is, the grade 9 is more brittle than the grade 8 and it will break quicker, however the grade 9 does have more holding stength. Ken What else is there besides welding and riding. Besides that Miller Thunderbolt XL

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Question: Letters on bolt head? [Archive] - Duramax

22/6/2008· Grade 8 is alloy steel. This means the steel itself is stronger regardless of heat treat, but they are heat treated for extra strength. This mean if the bolt get really hot, it will hold it's strength better than carbon steel. Most jet engine stuff is grade 8 if it's not a

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Metric Steel Bolts - Grades and Property Classes

Steel Bolts - Metric Grades Steel Bolts - SAE Grades For metric bolts strength is according ISO 898 Mechanical properties of fasteners made of carbon steel and alloy steel described by "property classes" with designations 4.6, 4.8, 5.8, 8.8, 9.8, 10.9 and 12.9.

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Strength Specifications of Metric Threaded Fasteners

The property class is normally stamped on the head of the bolt. The two figures indicate the tensile and yield strengths of the bolt or screw. In the case of a 8.8 grade bolt the first figure signifies that the Tensile Strength is at least 800MPa.

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What Are Grade 8 Bolts? DoItYourself.com

What Are Grade 8 Bolts? By Doityourself Staff When you have a project that needs a very strong bolt, grade 8 bolts should be the kind that you look for. Hex bolts, which are commonly used for mechanical type projects, are stamped with a grade that dictates ...

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What Are the Different Grades of Bolts? Hunker

The higher the ISO numbers are, the stronger the bolt. A metric bolt designated as ISO class 6.8 roughly corresponds in strength to an SAE Grade 2 bolt. Bolts of ISO class 8.8 and the slightly stronger class 9.8 roughly correspond to an SAE Grade 5 bolt. An

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Carbon Steel Bolts in ASTM A307 (Grades A and B) -

Scope ASTM A307 is the standard specification for carbon steel bolts, studs, and threaded rods of 60000 PSI tensile strength in sizes from ¼ inch to 4 inches in diameter. A307 bolts from Glaser and Associates are available in two grades, A and B, offering different

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What Is the Difference Between Plain Grade 8 Bolt &

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 ...

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Shear Bolt vs Regular Bolt

17/9/2014· So, I went over to the fastener section. They had Grade 8, Grade 5 and Steel bolts, according to the labels on the drawers. No Grade 2 bolts. Is it OK to replace a shear bolt with a regular Grade 2 bolt? 03-28-2002, 10:34 PM #2 RobS View Profile View Forum ...

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What grade bolt can be threaded? [Archive] - BentRider

[Archive] What grade bolt can be threaded? Homebuilders I understand that SS bolts are about a grade 3, and non SS bolts should be available up to about grade 8 at most "bolt" places. But then you have to worry about moisture on the bolts.

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Determining Bolt Grades & Understanding Head Markings

Determining Bolt Grades & Understanding Head Markings The Nut and Bolt Solution Series Identifying bolt grades and head markings for US grades 2, 5 and 8. Metric grades 8.8.,10.9 and 12.9 (socket products). Video 1: Determining Bolt Grade and Head Markings

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