Because of the application ASTM A325 bolts have a shorter than normal thread length For example a 1 x 4 A325 structural bolt has a 1 3 4 thread length whereas a 1 x 4 A307 hex bolt has a 2 1 4 thread length The A325 specification contains specific language limiting these bolts to these thread lengths Section 1 5 of the specification reads as follows 1 5 This The A325 Structural Bolt is used in construction and structural assembly It fastens steel to steel structural connections where the application is critical It is available both in Plain or Hot Dipped Galvanized finish in the diameter range from 2020 10 29 nbsp 0183 32 A325 STRUCTURAL BOLTS TYPE I Leland offers ASTM A325 bolts type I as complete assemblies or bolts only Bolts are typically supplied as plain or hot dip galvanized in diameters from 1 2 to 1 1 4 and lengths to 8 Fully threaded bolts are available thread to head in lengths up to four times the diameter 2021 4 29 nbsp 0183 32 ASTM A325 Specification for heat treated carbon steel alloy steel boron steel and weathering steel materials for bolts screws studs threaded rods and other externally threaded fasteners for use in high tensile structural bolting applications ASTM A325 specification covers requirements for chemical composition mechanical properties heat treatment hardness 2022 2 7 nbsp 0183 32 The a325n bolt is the largest hexagon headed socket head cap screw in metric This size of this fastener was developed by British engineer James Bolts Limited to be used primarily for aircraft applications but it is now also very commonly found on land vehicles and vessels

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 a 325 heavy hex structural bolts technical data bolt grip length chart for a325 and a490 high strength bolts grip is thickness of material to be connected exclusive of washers for each flat washer used add 5 32 inch to grip for each beveled washer used add 5 16 inch to 2011 5 2 nbsp 0183 32 Length Weight of ASTM A325 or A490 high strength bolts Under Head Heavy Hex Structural Bolts with Hex Nut in Pounds Kg per 100 Inches mm 1 2 quot 13 5 8 quot 16 3 4 quot 19 7 8 quot 22 1 quot 25 1 1 8 quot 29 1 1 4 quot 32 1 3 8 quot 35 1 1 2 quot 38 1 quot 25 16 5 7 48 29 4 13 34 47 21 32 1 1 4 quot 32 17 8 8 07 31 1 14 11 49 6 22 5 74 4 33 75 104 47 17 Second the shank length non threaded portion of the body on the grade A325 and A490 bolts is designed to be greater shorter thread lengths than your standard hex bolt or hex cap screw Remember the weakest section of standard carbon steel fasteners is through the threaded region Minute design2022 2 15 nbsp 0183 32 They can be heat treated and can come in different types such as the ASTM A325 countersunk bolts and other types The size of the bolts ranges from 189 inches to 1 189 inches in diameter The material has high strength The

2019 2 16 nbsp 0183 32 Length สกรู 1หัว 1อีแปะ A325 ราคาชุดละ HeAVY HexAgon HeAd bolt AstM A325 nUt A563 WAsHeR F436 Hot dip gAlVAnized H d g สกรูพร้อมน๊อตและ 1 แหวนอีแปะ A325 HOT DIP GALVANIZED H D G A13 stAndARd AstM A3252012 2 24 nbsp 0183 32 Specification for Structural Joints Using ASTM A325 or A490 Bolts June 30 2004 Supersedes the June 23 2000Specification for Structural Joints Using ASTM A325 or A490 Bolts Prepared by RCSC Committee A 1 Specifications and approved by the Research Council on Structural Connections Structural Bolts A325 amp A490 Tolerance on Length Nominal Screw Size Nominal Screw Length Up to 6 quot Longer than 6 quot 1 2 12 19 5 8 12 25 3 4 1 19 25 1 1 8 1 25 252020 6 29 nbsp 0183 32 Bolt Length Estimation Table for F3125 Grade A325 and A490 Bolts This table can be used as a guide for bolt length estimation for our structural bolts Add the length below to grip to determine bolt length required If beveled washers are used add an additional 5 16 inch to the no washer column for each bevel washer 2016 1 7 nbsp 0183 32 ASTM A325 Recommended Hardware Note Nuts conforming to A194 Gr 2H are a suitable for use with A325 heavy hex structural bolts The ASTM A563 Nut Compatibility Chart has a complete list of specifications

Hex Bolt Dimensions DIN 933 amp ISO4017 amp UNI5739 DIN 931 amp ISO4014 amp UNI5737 DIN 558 amp ISO4018 BS 1083 BS 1768 ASME B18 2 1 DIN EN14399 4 DIN 601 amp ISO 4016 amp CSN 21301 amp EU 24016 DIN 7968 DIN 7990 amp CSN 21308 Standard Thread Length for Bolts Inch Imperial Bolt Diameter 6 quot and Shorter Longer Than 6 quot A325 Thread Length 1 4 0 75 1 5 16 0 875 1 125 3 8 1 1 25 7 16 1 125 1 375 1 2 1 25 1 5 1 9 16 1 375 1 625 5 8 1 5 1 75 1 25 3 4 1 75 2 1 375 7 8 2 2 25 1 5 1 2 25 2 5 1 75 1 1 8 2 5 2 75 2 1 1 4 2 75 3 2 1 3 8 3 3 2021 3 26 nbsp 0183 32 ASTM A325 Fasteners Manufacturer in India The ASTM A325 specification covers high strength heavy hex structural bolts from 1 2 quot diameter through 1 1 2 quot diameter These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts 2022 2 24 nbsp 0183 32 ASTM A325 Bolt Dimensions Chart Sizes Strength 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 2012 2 24 nbsp 0183 32 High Strength Bolt An ASTM A325 or A490 bolt an ASTM F1852 twist off type tension control bolt or an alternative design fastener that meets the requirements in Section 2 8 Inspector The party responsible to ensure that the contractor has satisfied the provisions of this Specification in the work Joint

lt A325 권장 하드웨어 너트 와셔 gt For bolts of other configurations and thread lengths with similar mechanical properties Nuts conforming to A194 Gr 2H are a suitable for use with A325 heavy hex structural bolts The ASTM A563 Nut Compatibility Chart has a Although technically any size A325 can be custom manufactured there are certain restrictions as well as common lengths which are more readily available in the marketplace Depending on the diameter there may be longer lengths A307B F1554 A325 A490 A193 A320 Several ASTM specifications require a hex head that is larger than a standard finished hex head These specifications include A193 A320 and A307B Although A325 and A490 bolts also require a 2021 5 19 nbsp 0183 32 ASTM A325 Structural Bolts ASTM A325 covers high strength structural bolts used in structural steel connections A325s have a heavy hex head a full body diameter and are normally short in overall length since they are connecting steel to steel 2007 6 11 nbsp 0183 32 Chet Good Morning I do not know any code book that says you can t weld HS Bolts specifically ASTM A325 amp A490 The AISC ASD specifically prohibited welding or even heating ASTM A449 Q amp T anchor rods However the ASTM Specs for A325 A490 and the ASTM A1852 look on heat treatment by anyone downstream of the manufacturer as subsequent

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