ASTM A193 A320 A307 A325 A593 A354 A449 A490 F593 F1554 F3125 and MANY more Fastener Specifications Lightning Bolt Rated 1 Resource on Web 2010 07 06 nbsp 0183 32 Another difference is that Grade 5 bolts may be specified from 1 4″ diameter up to and including 1 1 2″ diameter The A325 specification covers bolts from 1 2″ up to and including 1 1 2″ diameter For bolts larger than 1 1 2″ ASTM A449 should be specified Lastly the required thread lengths are different 2021 12 16 nbsp 0183 32 187 ASTM A325 vs Grade 5 bolts Portland BoltASTM A193 Grade B7 Bolts and SA193 B7 Stud Bolt Hex Nut Design of Bolts in Shear Bearing Connections per AISC LRFD Grade 8 8 Bolt and Metric Class 8 8 Hex Allen Lag Bolts 187 ASTM F436 Portland BoltBolt Torque Table ASTM A325 Bolt Torque Chart High Tensile Grade 8 8 Hex Bolt and Class 8 8 Allen Bolts Protective Finish heavy hex structural bolts are supplied with an as processed plain finish unless otherwise indicate Example Heavy Hex Structural Bolt ASME B18 2 6 1 2 13x1 ASTM A325 Type 3 Plain Heavy hex structural bolts are identified by their head markings indicating ASTM A325 or ASTM A490 In addition the bolts show the source A325 Type 1 Tap A325 Type 3 A449 Hex Bolt A490 Type 1 The ASTM A153 Specification Class Description Min Avg Coating Thickness mils B 1 3 16 quot and over in thickness and over 15 quot in length 3 4 B 2 Under 3 16 quot in thickness and over 15 quot in length 2 6 B 3 Any thickness and under 15 quot in length 2 2 C Fasteners over 3 8 quot in diameter and similar articles washers 3 16 quot to 1 4 quot

TABLE 7 ASTM A449 Standard Specification for Hex Cap Screws Bolts and Studs Steel Heat Treated 120 105 90 ksi Minimum Tensile Strength General Use Standard Grade Diameter Yield Tensile Hardness EL RA Class Stress Stress ASTM A449 na ≥1 4 ≤1 4610 Malat Street Oakland CA 94601 4904 Phone 510 532 1188 800 242 BOLT 2658 Fax 510 532 3947 Info BayBolt comASTM If you are working with A325 structural bolts on a regular basis we strongly recommend purchasing a copy of the ASTM A325 specification from ASTM International ASME ASME B18 2 6 covers dimensional standards for A325 heavy hex structural bolts RCSC The Research Council on Structural Connections is a non profit volunteer organization whose research F1852 Twist off A325 bolt A490 Fu 150 ksi F2280 Twist off A490 bolt Other Bolts and Threaded Fasteners A449 Same material specification as A325 but available in larger diameters and available unheaded A354 Gr BD Same material specification as A490 but available in larger diameters and available unheaed A36 and A572 Gr 50 are available as round bars and can be 2014 10 01 nbsp 0183 32 Regarding anchor bolts ASTM A449 is not a material that should be specified Regardless our steel fabricating customer often see drawings calling out for A 449 anchor bolts or fully threaded studs This is frequently DOT Highway work where AASHTO specs are more common The document that controls anchor bolt manufacturing is ASTM F1554 It clearly

A325 – High Strength Bolds for Structural Steel Joints Including Suitable Nuts and Plain Hardened Washers A354 – Quenched and Tempered Alloy Steel Bolts and Studs with Suitable Nuts A449 – Quenched and Tempered Steel Bolts and Studs A490 – Quenched and Tempered Alloy Bolts for Structural Steel Joints 2 SAE Specifi cation J429 – Mechanical and Quality DIFFERENCE BETWEEN a325 VS a354 VS a449 vs a490 BOLTS These are the most commonly used fasteners in structural applications and construction industry Below values are in ksi DIFFERENCE BETWEEN b7 VS b8 VS b16 BOLTS These are used in extreme temperature application for example in aircraft engines that can reach up to 800 F Or to be used in ASTM A325 bolts are one of the most commonly used fasteners usually used for structural steel connections in heavy steel structures It contains two types of quenched and tempered steel heavy hex structural bolts Type 1 medium carbon carbon boron or medium carbon alloy steel Type 3 weathering steel Type 2 withdrawn in 1991 The ASTM A325 standard was withdrawn a449 bolts vs grade 5 structural design of buildings ii download astm to load capacity of bolts civil engineering a449 countersunk carriage heavy hex by prof khan video online download a449 bolts vs a325 structural grade 5 countersunk bolts o stainless nuts for a449 carriage astm to grade 5 specification for hex cap screws bolts and studs a449 heavy vs grade 5 2020 06 29 nbsp 0183 32 An important distinction between A325 bolts and A490 is that it A325 Type 1 bolts can be galvanized A325 bolts have a minimum tensile strength of 120 000 PSI for one inch or less diameters and 105 000 PSI for over one inch This makes them weaker than A490 certain jobs do not require a structural bolt as strong as Grade A490 F3125 Grade A490 Bolts Grade

ASTM If you are working with A325 structural bolts on a regular basis we strongly recommend purchasing a copy of the ASTM A325 specification from ASTM International ASME ASME B18 2 6 covers dimensional standards for A325 heavy hex structural bolts RCSC The Research Council on Structural Connections is a non profit volunteer organization whose research ASTM designations A325 F1852 and A 490 The new ASTM specification F1852 refers to the fasteners frequently referred to as tension control TC twist off or torque and snap fasteners High Strength bolts range in diameter from 189 to 1 189 in For bolts larger than 1 189 in the AISC allows the use of ASTM A449 provided that they are2008 07 30 nbsp 0183 32 A325 bolts are heavy hex head bolts ONLY and are designed for structural steel connections They range in diameter from 189 – 1 1 2 inclusive Due to their application an A325 structural bolt has a shorter thread length than a typical heavy hex bolt If you need a bolt with longer threads ASTM A449 should be used 2015 07 01 nbsp 0183 32 ASTM A325 is an ASTM International standard for heavy hex structural bolts titled Standard Specification for Structural Bolts Steel Heat Treated 120 105 ksi Minimum Tensile Strength It defines mechanical properties for bolts that range from 1⁄2 to 1 1⁄2 in diameter The equivalent metric standard is ASTM A325M which is titled Standard Specification for While ASTM A449 seems to offer the same strength as ASTM A325 the use of A449 material is restricted in the Specification Section J3 1 to bolt diameters larger than 1 189 in or lengths exceeding 12 diameters This is because these bolts are not produced to the same inspection and quality assurance requirements as ASTM A325 bolts If the bolts must be pre tensioned the

ASTM A449 covers headed bolts rods and anchor bolts in diameters ranging from 1 4″ through 3″ inclusive It is a medium strength bolt manufactured from a medium carbon or alloy steel that develops its mechanical values through a heat treating process It is intended for general engineering applications ASTM A449 is virtually identical in chemistry and strength to ASTM Bolts A325 9 4 A490 11 3 2 or 11 4 2 Twist off type tension control bolt assemblies F1852 13 4 Nuts A563 9 2 Washers F436 9 2 Compressible washer type direct tension indicators F959 10 2 2 Manufacturer The party or parties that produce the components of the fastener assembly Mean Slip Coefficient 181 the ratio of the frictional shear load at the faying surface to the total normal A449 covers quenched and tempered hex cap screws bolts and studs for general use A449 is identical in strength to A325 but a more appropriate specification for headed anchor bolts A449 is an appropriate anchor bolt specification when a project requires a bolt to be stronger than F1554 Grade 55 and not as strong as F1554 Grade 105 Portland Grade A325 bolts are available in diameters from 1 2 to 1 1 2 inch for diameters greater than 1 1 2 ASTM A449 specifications should be considered with a minimum tensile strength of 120 000 PSI They also come in two types Type 1 is a medium carbon steel and can be galvanized Type 3 is a weathering steel that offers atmospheric corrosion resistance similar to that of ASTM ASTM A325 bolts are available in diameters from 189 to 1 1 2 inch diameters for diameters greater than 1 1 2 ASTM A449 specifications should be considered with a minimum tensile strength of 120 000 PSI for diameters one inch and less and 105 000 PSI for sizes over one inch to 1 1 2 They also come in two types Type 1 is a medium carbon steel and can be galvanized Type 3 is