1、Designation: C1513 18Standard Specification forSteel Tapping Screws for Cold-Formed Steel FramingConnections1This standard is issued under the fixed designation C1513; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las
2、t revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers steel self-drilling and self-piercing tapping screws for the connection of cold-formed steelme
3、mbers manufactured in accordance with SpecificationsC645 and C955. This specification also covers test methods fordetermining performance requirements and physical proper-ties.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalcon
4、versions to SI units that are provided for information onlyand are not considered standard.1.3 The following safety hazards caveat pertains only to thetest methods described in this specification. This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It
5、 is the responsibility of the user of thisstandard to establish appropriate safety, health, and environ-mental practices and determine the applicability of regulatorylimitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on st
6、andard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mecha
7、nical Testingof Steel ProductsA510 Specification for General Requirements for Wire Rodsand Coarse Round Wire, Carbon SteelA1040 Guide for Specifying Harmonized Standard GradeCompositions for Wrought Carbon, Low-Alloy, and AlloySteelsB117 Practice for Operating Salt Spray (Fog) ApparatusC11 Terminolo
8、gy Relating to Gypsum and Related BuildingMaterials and SystemsC645 Specification for Nonstructural Steel Framing Mem-bersC955 Specification for Cold-Formed Steel Structural Fram-ing MembersF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1941 Spec
9、ification for Electrodeposited Coatings onThreaded Fasteners (Metric) F1941_F1941M2.2 ANSI/ASME Documents:ANSI/ASME B18.6.4 Standard Specification for ThreadForming and Thread-Cutting Screws3ANSI/ASME B18.18 Quality Assurance for Fasteners332.3 SAE Standards:SAE J78 Steel Self-Drilling Tapping Screw
10、s4SAE J933 Mechanical and Quality Requirements for Tap-ping Screws43. Terminology3.1 DefinitionsFor definitions relating to gypsum andrelated building materials and systems, use Terminology C11.3.2 Definitions of Terms Specific to This Standard:3.2.1 bearing surface (of the screw), nthe supporting o
11、rlocating surface of a fastener with respect to the part which itfastens (mates). The loading of the fastener is usually throughthe bearing surface, (that is, the bearing surface of the hexwasher head style is under the head, the part that touches thetop material being fastened).3.2.2 case depth (of
12、 the screw), nthe thickness of thehardened surface of the screw.1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Related Building Materials and Systems and is the direct responsibilityof Subcommittee C11.02 on Specifications and Test Methods for Accessories andRelated
13、 Products.Current edition approved April 1, 2018. Published April 2018. Originallyapproved in 2001. Last previous edition approved in 2013 as C1513 13. DOI:10.1520/C1513-18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For A
14、nnual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.4Available from Society of Aut
15、omotive Engineers (SAE), 400 CommonwealthDr., Warrendale, PA 15096-0001, http:/www.sae.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was
16、 developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13.2.3 counter
17、sunk head style (for a screw), nall screwhead designs that sink into the top material being fastened andthat have the bearing surface (see 3.2.1), at the top of the head(that is, flat and bugle).3.2.4 crest (of the screw thread), nthe highest point of thescrew thread.3.2.5 drill capacity (of the sel
18、f-drilling screw), nthe totalthickness of material the fastener is designed to drill through,including any space between the layers.3.2.6 head styles (of the screw), nrefer to Fig. 1 drawings.3.2.6.1 bugle head, nbugle shape countersinking headtypically used for fastening gypsum panel products to wo
19、odand steel.3.2.6.2 hex washer head, nhas an indented top surface andsix flat sides formed integrally with a flat washer whichprojects beyond the sides and provides a flat bearing surface.3.2.6.3 lath head, nsee modified truss.3.2.6.4 modified truss, nlow profile round washer head.3.2.6.5 pan framin
20、g head, nflat top surface rounding intocylindrical sides and a flat bearing surface.3.2.6.6 pan head, na slightly rounded top surface round-ing into cylindrical sides and a flat bearing surface.3.2.6.7 pancake head, nlower profile head style than thehex washer and pan head with a larger flat bearing
21、 surface.3.2.6.8 wafer head, na countersinking head style with alarge lip at the top of the countersinking contour that will“flush” with the substrate creating a greater bearing surface,therefore a greater pull-over/pull-through value.3.2.7 point style, nof the self-drilling tapping screw isdesignat
22、ed by a number (that is, 1, 2, 3, 4, or 5). The higher thenumber, the higher the drill capacity (see 3.2.5) of the screw.3.2.8 root (of the screw thread), nthe lowest point of thescrew thread.3.2.9 self-drilling tapping screw, nexternally threaded fas-teners with the ability to drill their own hole
23、and form or cuttheir own internal mating threads without breaking.3.2.10 self-piercing tapping screw, nexternally threadedfasteners with the ability to pierce metallic material 33 mils(0.84 mm), or less, form a sleeve by extruding metallicmaterial and “tap” their own mating threads when driven.Self-
24、piercing screws have a sharp point with the point angle notmore than 30 degrees.3.2.11 spin-out (for a screw), nfor a screw, the continuedrotation of a screw without further penetration into the sub-strate.3.2.12 tapping screw, nexternally threaded fasteners withthe ability to “tap” their own intern
25、al mating threads wheninstalled.4. Classification4.1 Steel tapping screws covered by this specification aretwo types:4.1.1 Self-drilling.4.1.2 Self-piercing.5. Materials5.1 Steel wire, Specification A510.5.1.1 Chemical composition shall be in accordance withSpecification A1040, minimum Grade 1018.6.
26、 Physical Properties6.1 Dimensions:6.1.1 Self-drilling tapping screws shall be in accordancewith SAE J78 based upon nominal size or basic diameter.Threads per inch (TPI) shall be as shown in Table 1.6.1.2 Self-piercing tapping screws shall be in accordancewith head dimensions as shown in ANSI/ASME B
27、18.6.4.6.2 Total Case DepthScrews shall have a total case depthconforming to the tabulation in Table 2.6.2.1 Case depth shall be measured at the mid-point be-tween crest and root on the thread shank.7. Packaging and Head Marking7.1 Screws shall be marked with manufacturers/suppliershead marking for
28、traceability.7.2 Screws shall be packaged in substantial commercialshipping containers, constructed so as to preserve the contentsin good condition and to ensure acceptance and safe deliveryby common or other carriers.7.2.1 Individual packages shall be so constructed that thecontents shall be able t
29、o be partially removed without destroy-ing the containers ability to serve as a receptacle for theremainder of the contents.7.2.2 Individual packages and shipping containers shall bemarked with the type, size, use, and quantity of the screwscontained therein, the name brand headmarking example andtr
30、ademark of the producer or supplier, the ASTM designation,and any or all appropriate evaluation reports. Boxes shall bemarked with the drill capacity of the self-drilling tappingscrews.8. Performance Requirements8.1 Hardness:FIG. 1 Head StylesTABLE 1 Threads Per Inch (TPI)NominalScrew SizeThreads Pe
31、rInch, maxThreads PerInch, min6201082210 24 1212 24 1414 in. 28 14C1513 1828.1.1 The self-drilling tapping screws shall have a surfacehardness of not less than Rockwell C50 and core hardness ofnot less than Rockwell C32 as tested in accordance with SAEJ78.8.1.2 The self-piercing screws shall have a
32、surface hardnessof not less than Rockwell C45 and core hardness of not lessthan Rockwell C28 as tested in accordance with SAE J933.8.2 Ductility:8.2.1 The self-drilling tapping screws shall have sufficientductility to be able to withstand a 5 bend without visible signsof fracture as tested in accord
33、ance with SAE J78.8.2.2 The self-piercing tapping screws shall have sufficientductility to be able to withstand a 10 bend without visiblesigns of fracture as tested in accordance with ANSI/ASMEB18.6.4.8.3 Torsional Strength:8.3.1 Self-drilling tapping screws shall not fail the applica-tion of torque
34、 less than or equal to the torsional strengthspecified in Table 3, when tested in accordance with SAE J78.8.3.2 Self-piercing tapping screws shall not fail with theapplication of torque less than the torsional strength specifiedin Table 4, as tested in accordance with ANSI/ASME B18.6.4,Section 2.9.1
35、.2, for tapping screws.8.4 Drill Drive Performance Requirement:8.4.1 Self-drilling tapping screws shall not fail the drill-drive test requirements as noted in SAE J78 and shown inTable 5.8.4.2 Self-drilling tapping screws shall be tested in accor-dance with SAE J78 as shown in Fig. 2.8.5 Self-Drilli
36、ng Tapping Screw Drill Capacity:8.5.1 Screws shall be able to self-drill and thread intocold-formed steel thicknesses without breaking or stripping asspecified by each specific manufacturers published recom-mendations. Manufacturers shall provide a min-max recom-mendation with the drill capacity of
37、each self-drilling pointstyle screw.9. Finish and Appearance9.1 The threads shall be clean, smooth, and neatly formed.9.2 Each fastener shall have manufacturers/suppliers headmarking for traceability.9.3 Screws shall have a corrosion-resistant treatment. Thefinish shall not inhibit adhesion to finis
38、hing materials nor bleedthrough field-applied decoration. The screws shall meet aminimum requirement as listed in Specification F1941 as testedin accordance with Practice B117.TABLE 2 Total Case DepthNominal ScrewSizeTotal Case Depth,Maximum, in. (mm)Total Case Depth,Minimum, in. (mm)8 through 12 0.
39、009 (.2286 mm) 0.004 (.1016 mm)14 in. 0.011 (.2794 mm) 0.005 (.1270 mm)TABLE 3 Torsional StrengthSelf-Drilling Tapping ScrewsNominal ScrewSizeMinimum lb-in.Type BSDAMinimum lb-in.Type CSDB624 24842 810 61 6512 92 10014 in. 150 156AType BSDspaced threads referred to as coarse thread.BType CSDmachine
40、screw threads referred to as fine thread.TABLE 4 Torsional StrengthSelf-Piercing Tapping ScrewsNominal Screw Size Minimum lb-in.62473083910 56TABLE 5 Drill-Drive Test RequirementsNominalScrewSizeTestPlateThickness,Ain.,MaxTestPlateThickness,Ain., MinAxialLoading,Blb, A, maxAxialLoading,Blb,B,MaxAxia
41、lLoading,Blb,C,MaxTime toDrilland FormThread,Cs, Max4 0.068 0.062 25 30 40 2.06 0.068 0.062 30 35 45 2.58 0.068 0.062 30 35 45 3.010 0.068 0.062 35 40 50 3.512 0.068 0.062 45 50 60 4.014 0.068 0.062 45 50 60 5.0ATest plates shall be low carbon, cold rolled steel having a hardness of RockwellB60-85.B
42、Axial loads are varied to offset the detrimental effects on drilling capabilitycreated by finishes applied to screws in accordance with the following:Column AAxial loads tabulated shall apply to plain, oiled, and commercialphosphate coating and cadmium and zinc platings up to 0.0003 in. in thickness
43、.Column BAxial loads tabulated shall apply to special electroplated finishesexceeding 0.0003 in. in thickness and to special coatings, such as thread sealinghot melts, and so forth.Column CAxial loads tabulated shall apply to chromium finish.CTool speed shall be 2500 rpm for screw sizes No. 4 throug
44、h No. 10. Tool speedof 1800 rpm is recommended for screw sizes No. 12 and14 ; however, 2500 rpmmay be used provided care is exercised to minimize influence of high heat buildupdue to surface speed.FIG. 2 Drill-Drive Test ApparatusC1513 18310. Sampling10.1 . Sampling for all tests, except those in Se
45、ction 13,shall be in accordance with Practice F1470.11. Test Methods11.1 Screws shall be tested per SAE J78 Table number 4,Section 8.4, to determine the ability of the screws to self-drillthrough cold-formed steel without spinout, thread deformation,or breaking.11.2 Significance and Use:11.2.1 The t
46、est methods provide procedures for evaluatingthe physical properties and performance requirements of steeldrill screws.12. Test Materials12.1 Materials:12.1.1 Screw fasteners used in the tests shall be of standardmanufacturer and representative of the product for whichrecognition is sought. Where te
47、sted fasteners are prototype, thefasteners shall be representative of later production. Fastenersshall meet the minimum and quality requirements for tappingscrews in accordance withANSI/ASME B18.6.4,ANSI/ASMEB18.18, and Practice F1470, or the pertinent standard, which-ever is more restrictive. Compl
48、iance is determined by testreports submitted by a qualified testing laboratory.12.1.2 Sheet SteelSteel description, including materialspecification, yield strength, and minimum uncoated steelthickness noted.12.2 Sharp point screws shall be tested using 33 mil(0.84 mm) steel.12.3 Drill point screws s
49、hall be tested using 54 mil(1.37 mm) steel.13. Specimen Preparation13.1 Where the number of steel coupon specimens is notnoted in the specific standard, a minimum of three steel couponspecimens shall be tested to show compliance with the appro-priate standard and to determine the minimum uncoated steelthickness and strengths. Steel tension test shall be performed inaccordance with Test Methods and Definitions A370.13.2 Screw FastenersA minimum of three test specimensare to be tested for tension (pull-out) and for the lap shearconnectio
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