ASME B18.31.2:2014 pdf download Continuous Thread Stud, Double-End Stud, and Flange Bolting Stud (Stud Bolt) (Inch Series)
1INTRODUCTION1.1 Scope
1.1.1 This Standard covers the complete dimen-sional and general data for the following types of studsin inch dimensions:
(a) continuous thread studs(b) double-end studs
(c flange bolting studs (stud bolts)
These studs are recognized as American NationalStandard. The following configurations are covered:continuous Baread stud: a stud that is threaded over itscomplete length.
dorble-end (clarnping fype – iderical ends) stud: a studwith screw threads of the same length and configurationon each end. This type of stud serves the function ofclamping two bodies together with a nut on each end.double-ernd (tap-end type) stued: a stud designed to beinstalled in a tapped hole and usually with differentthreaded lengths on each end. For the tap end of thestuds,both regular unified threads and interference-fitthreads are covered.
Double-end studs of the following body diametersare covered:
a ) reduced-diameter body (see para. 6.1 fordimensions)
(b) full body (see para.6.2 for dimensions)
flange bolfing sfud (sfud bolf): a threaded stud used pri-marily in applications with flanges covered by ASMEB16.5, and made using ASTM A01 bolting materials.1.1.2 The inclusion of dimensional data in thisStandard is not intended to imply that all productsdescribed are stock production items.Consumers shouldconsult with suppliers concerning availability ofproducts.
2COMPARISON WITH ISo DOCUMENTSThere is no comparable ISO standard.3REFERENCED STANDARDS
The following is a list of publications referenced inthis Standard. Unless otherwise specified, the referenceshall be to the most recent issue at the time of orderplacement.
ASME B1.1,Unified Inch Screw Threads (UN and UNRThread Form)
ASME B1.3，Screw Thread Gaging Systems forAcceptability – Inch and Metric Screw Threads (UN,UNR,UNJ, M, and MJ)
ASME B1.12,Class 5 Interference-Fit ThreadASME B16.5, Pipe and Flange Fittings
ASME B18.2.8,Clearance Holes for Bolts,Screws, andStuds
ASME B18.2.9,Straightness Gage and Gaging for Boltsand Screws
ASME B18.12，Glossary of Terms for MechanicalFasteners
ASME B18.18,Quality Assurance for FastenersASME Y14.5,Dimensioning and Tolerancing
Publisher: The American Society of MechanicalEngineers (ASME),Two Park Avenue,New York, NY10016-5990; Order Department: 22 Law Drive,P.O. Box 2900,Fairfield,NJ07007-2900(www.asme.org)
ASTM A193/A193M，Alloy-Steel and Stainless SteelBolting Materials for High-Temperature Service
ASTM A320/A.320M,Alloy Steel Bolting Materials forLow-Temperature Service
ASTM A354,Quenched and Tempered Alloy Steel Bolts,Studs, and Other Externally Threaded FastenersASTM A380,Standard Practice for Cleaning,Descaling,and Passivation of Stainless Steel Parts, Equipment,and Systems
ASTM A437/A437M,Alloy-Steel Turbine-Type BoltingMaterial Specially Heat Treated for High-TemperatureService
ASTM A449,Quenched and Tempered Steel Bolts andStuds
ASTM A453/A453M,High-Temperature BoltingMaterials With Expansion Coefficients Comparable toAustenitic Stainless Steels
ASTM A540/A540M，Alloy-Steel Bolting Materials forSpecial Applications
ASTM A10i4/A1014M,Precipitation-HardeningBolting Material (UNS NO77 18) for High TemperatureService
ASTM F468，Nonferrous Bolts,Hex Cap Screws,andStuds for General Use
ASTM F593,Stainless Steel Bolts,Hex Cap Screws,and Studs
ASTM F788/F788M，Surface Discontinuities of Bolts,Screws, and Studs,Inch and Metric Series