2015年10月12日 · About 3 years ago while casting the upper part of a building. I asked in this forum whether to use A307 or A325 bolt for future roofing addition. Someone recommended A307 over A325.. I couldn't find the thread pertaining to it and the exact reason but it's something along the line of the A325...

2006年2月3日 · I think the Grade C is intended for those cases where you use A36 rod and make custom anchor bolts out of it- typical for big anchor bolts. (IE, using round rod, threading one end, bending or putting washer plate on other end- not all-thread rod assemblies). The data above is from ASTM A307-04.

2008年8月2日 · Are you talking about ASTM A 307 Grade C and ASTM F 1554 Grade 36? Regards, Cory Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

2004年6月10日 · Yes, A307 Grade A was the old preferred anchor bolt for headed bolts and studs. F1554 is the new preferred anchor bolt they are equivalent. I don’t let them sub. them because they can find the bolts they just have always ordered A307 and change is hard.

2009年4月29日 · I know machine bolts come in various grades. On construction documents should 'machine bolts' call outs be referenced to comply with ASTM A307?

2009年8月21日 · First of all ASTM A 307 has three grades as follows: Grade A Bolts and studs having a minimum tensile strength of 60 ksi (414 MPa) and intended for general applications, Grade B Bolts and studs having a tensile strength of 60 to 100 ksi (414 to 690 MPa) and intended for flanged joints in piping systems with cast iron flanges Grade C Nonheaded anchor bolts, …

2001年11月19日 · Structural steel inspector noted that steel fabricator installed Grade 5 bolts in leiu of A307 as specified. Connections are simple framed beam connections for floor beams. Does anyone have an opinion as to any inherent problems with this?

2006年2月23日 · The ASTM A307 bolts (ASTM designation A307-83a) have a specified minimum tensile strength of 60 ksi. In application, A307 bolts and nuts are tightened so that some axial force is present that will prevent movement of the connected members in the axial direction of the bolt. Proper tightening also prevents loosening of the nut.

2006年5月31日 · The magnitude of the load appears to be relatively low. Can you get by with an ASTM A307 bolt? You should have no trouble welding the A307 machine bolt. The ASTM A325 bolt is quenched and tempered. Welding it will produce untempered martensite in the heat affected zone. If the weld is around the head of the bolt, the heat affected zone may extend to …

2004年12月26日 · A307 is the correct ASTM standard, F1554 are the preferred anchor bolt but not everyone uses or wants to buy them.