These bolts are often used in pipe flanges, and to protect the flange, the bolt is designed and manufactured to break before the expensive pipe flange is damaged through over tightening. Editorial Note: ASTM A307 now requires a manufacturer and a grade marks on the top of heads. Grade identification consists of "307A" or "307B" on each bolt produced to its standard requirements.

Grade B eggshells may have slight blemishes, such as scratches, stains, natural blemishes, etc. They are not cracked or broken in any way. Grade B eggshells are mostly used by artists for painting or carving where these blemishes are covered up. You might want to order a Grade A eggshell if you are planning on displaying it in it's natural state. See similar questions...

The difference is the number of column defect allowed in the CCD sensor. For a grade A CCD, there is no column defect in the central 750 x 750 CCD area. For a grade B CCD, the maximum number of column defects should not exceed 10 in the whole image. See similar questions...

There are some variations across the zones, but in the main the following grades of drivers are usual in the railway hierarchy. A special driver is one qualified to handle mail, superfast, and express trains. An A driver is qualified to handle ordinary long-distance passenger trains. In some zones, there is no separate category of 'A-special', and all 'A' drivers are eligible to drive express trains, but only elite or senior A-grade drivers are assigned prestigious expresses like the Rajdhanis. See similar questions...

Then simply call us or mail us within 48 hours of receiving it and we will amend it for you free of charge. See similar questions...

We do have salt spray test facility, and maximum length we can test is 500mm. Our charges are Rs. 1,500/- for 1st day and Rs. 1,000/- for each additional day. 10.2% Service Tax shall also be applicable. See similar questions...

In my mind, essay grades start at 50 for a turned-in on-time assignment and earn points as I read. For course investment, however, everyone starts at 100 and loses points (down to zero, if necessary) for missed classes and inadequate participation, or other elements of course investment. See similar questions...

It usually means that the shoe has some type of factory flaw or defect. Most of the time, you can't even see this problem on the shoe. It's most likely just some extra glue or something along those lines. B-GRADES ARE NOT VARIENTS. They are different from regular laces. More oval then others. You can't really pick these up just anywhere. There was some guy on NT selling a bunch similar to them. what is hype? basically it is just something that alot of people want in anticipation. See similar questions...

ASTM is an independent, not-for-profit standards-writing organization. They promulgate standards in many diverse technical disciplines. ASTM is the forum for a majority of standards in the USA, especially those related to plastic materials and products testing. ASTM writes standards and conducts educational training seminars (specifications, test methods and guides). ASTM does not conduct testing, listing, certifying, or enforcement of its standards. [Back] See similar questions...

Parts per million or grains per gallon are the most common. One part per million (PPM) is just what it says: out of one million units, one unit. Grains, or grains per gallon (GPG) is a weight measurement taken from the Egyptians; one dry grain of wheat, or about 1/7000 of a pound. It takes 17.1 PPM to equal 1 GPG. See similar questions...

A hardened server is a server in which the software has been modified to make it harder to attack. However, some servers are "harder" than others. There are a couple of ways to harden a server. The simplest way, and the least effective, is to run a set of scripts on a standard OS install. This confirms somewhat current patches and turns off services that could be exploited. See similar questions...

Hardening involves heating the part past a so-called "transition" temperature that varies slightly with the type of steel but usually lies around 1450?F (the metal becomes red hot at this temperature) and then dropping it into a bath of water or oil to quickly cool it, an operation called quenching. Quenching leaves the steel very hard but also quite brittle, somewhat like glass. Thus another heating operation is required to stabilize the steel and make the part more resistant to breakage. See similar questions...

Yes, they are hardened, tempered and ready to use after putting on your handle. You will probably have to clean and resharpen after assembly. See similar questions...

Absolutely! The TTM 52 and TTM 54 are both built with the same components and hand assembled quality right here in beautiful downtown Mukilteo WA. USA, as are all Rane products. See similar questions...

The idea evolved from the fact that running a marathon in every state was not nearly the novel idea I thought it was at first. (Hundreds of people have accomplished the feat). So I took it up a notch. See similar questions...

Knetgolf.com Mint golf balls are the best available and are the top choice for many golfers regardless of skill level. The Mint balls have both the appearance and feel of a ball that has been used from 1 to 4 holes. Many of our customers refer to our Mint golf balls in our Feedback section as One Hit Wonders. These are the top 5% of all balls we recycle. No X outs are included in this mix. Corporate or sport team logos will be in the mix unless otherwise noted. Knetgolf. See similar questions...

In general, steel varieties which can be hardened not just on the surface but also deep hardened by the so-called "through hardening method" are used for the raceways and rolling elements of bearings. Foremost among these is high carbon chromium bearing steel, which is widely used. Case hardened steel has excellent efficiency against shock loads because of its combination of a hard surface layer which has been carburized and hardened to an appropriate depth and a relatively pliable inner core. See similar questions...