1、Designation: C 1513 04Standard Specification forSteel Tapping Screws for Cold-Formed Steel FramingConnections1This standard is issued under the fixed designation C 1513; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 stee
3、lmembers manufactured in accordance with SpecificationsC 645 and C 955. This specification also covers test methodsfor determining performance requirements and physical prop-erties.1.2 The values stated in inch-pound units are to be regardedas the standard. The SI equivalents of the inch-pound units
4、 areapproximate.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 is the responsibility of the user of thisstandard to establish appropriate
5、 safety and health practicesand determine the applicability of regulatory requirementsprior to use.2. Referenced Documents2.1 ASTM Standards:2A 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 510 Specification for General Requirements for WireRods and Coarse Round Wire, Car
6、bon SteelB 117 Practice for Operating Salt Spray (Fog) ApparatusC 11 Terminology Relating to Gypsum and Related Build-ing Materials and SystemsC 645 Specification for Nonstructural Steel Framing Mem-bersC 955 Specification for Load-Bearing (Transverse andAxial) Steel Studs, Runners (Tracks) and Brac
7、ing orBridging for Screw Application of Gypsum Panel Productsand Metal Plaster BasesF 1941 Specification for Electrodeposited Coatings onThreaded Fasteners (Unified Inch Screw Threads (UN/UNR)2.2 ANSI/ASME Documents:B18.18.1M Inspection and Quality Assurance for GeneralPurpose Fasteners3B18.6.4 Stan
8、dard Specification for Thread Forming andThread-Cutting Screws32.3 SAE Standards:SAE J78-1998 Steel Self-Drilling Tapping Screws4SAE J933 Mechanical and Quality Requirements for Tap-ping Screws43. Terminology3.1 DefinitionsFor definitions relating to gypsum andrelated building materials and systems,
9、 use Terminology C 11.3.2 Definitions of Terms Specific to This Standard:3.2.1 bearing surface (of the screw), nthe supporting orlocating 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 s
10、urface of the hexwasher head style is under the head, the part that touches thetop material being fastened).3.2.2 case depth (of the screw), nthe thickness of thehardened surface of the screw.3.2.3 countersunk head style (for a screw), nall screwhead designs that sink into the top material being fas
11、tened 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 self-drilling screw), nthe totalthickness of material the fastener is designed to drill through,in
12、cluding 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 woodand steel.1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Re
13、lated Building Materials and Systems and is the direct responsibilityof Subcommittee C11.02 on Specifications and Test Methods for Accessories andRelated Products.Current edition approved Oct. 1, 2004. Published October 2004. Originallyapproved in 2001. Last previous edition approved in 2001 as C 15
14、13 01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from ASME International Headquarters, Three
15、Park Avenue, NewYork, NY 10016-5990.4Available from Society of Automotive Engineers, 400 Commonwealth Drive,Warrendale, PA 15096-0001.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,
16、 United States.3.2.6.2 hex washer head, nhas an indented top surfaceand six 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 fra
17、ming 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 bear
18、ing 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 isdesig
19、nated 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 threadedfasteners with the ability to drill their own hole
20、 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
21、-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 inter
22、nal 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 A 510minimum grade 1018.6. Physical Properties6.1 Dimensions:6.1.1 Self-drilling tapping screws shal
23、l be in accordancewith SAE J78.6.1.2 Self-piercing tapping screws shall be in accordancewith head dimensions as shown in ANSI/ASME B18.6.4.6.2 Total Case DepthScrews shall have a total case depthconforming to the tabulation in Table 1.6.2.1 Case depth shall be measured at the mid-point be-tween cres
24、t and root on the thread shank.7. Packaging and Head Marking7.1 Screws shall be marked with manufacturers/suppliershead marking for traceability.7.2 Screws shall be packaged in substantial commercialshipping containers, constructed so as to preserve the contentsin good condition and to ensure accept
25、ance and safe deliveryby common or other carriers.7.2.1 Individual packages shall be so constructed that thecontents shall be able to 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 conta
26、iners shall bemarked with the type, size, use, and quantity of the screwscontained therein, the name brand headmarking example andtrademark 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-drill
27、ing tappingscrews.8. Performance Requirements8.1 Hardness:8.1.1 The self-drilling tapping screws shall have a surfacehardness of not less than Rockwell C 50 and core hardness ofnot less than Rockwell C 32 as tested in accordance with SAEJ78.8.1.2 The self-piercing screws shall have a surface hardnes
28、sof not less than Rockwell C 45 and core hardness of not lessthan Rockwell C 28 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 accordance with SAE
29、 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 SAE J933.8.3 Torsional Strength:8.3.1 Self-drilling tapping screws shall not fail the applica-tion of torque less than or equal t
30、o the torsional strengthspecified in Table 2, 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 3, as tested in accordance with ANSI/ASME B18.6.4,Section 2.9.1.2, for tapping screw
31、s.8.4 Drill Drive Performance Requirement:FIG. 1 Head StylesTABLE 1 Total Case DepthNominal Screw SizeTotal Case Depth,Maximum, in. (mm)Total Case Depth,Minimum, in. (mm)8 through 12 0.009 (.2286 mm) 0.004 (.1016 mm)14 in. 0.011 (.2794 mm) 0.005 (.1270 mm)C15130428.4.1 Self-drilling tapping screws s
32、hall not fail the drill-drive test requirements as noted in SAE J78 and shown inTable 4.8.4.2 Self-drilling tapping screws shall be tested in accor-dance with SAE J78 as shown in Fig. 2.8.5 Self-Drilling Tapping Screw Drill Capacity:8.5.1 Screws shall be able to self-drill and thread intocold-formed
33、 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 each self-drilling pointstyle screw.9. Finish and Appearance9.1 The threads shall be clean, smooth,
34、 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 finishing materials nor bleedthrough field-applied decoration. The screws shall meet aminimum requiremen
35、t as listed in Specification F 1941 astested in accordance with Practice B 117.10. Sampling10.1 Obtain not less than one randomly selected specimenof each type of screw to be tested from each of five containers,with not less than five screws per 250 000 screws, to constitutea lot for testing.11. Tes
36、t 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 test methods provide procedures for evaluatingthe physical p
37、roperties 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 tested fasteners are prototype, thefasteners shall be represe
38、ntative of later production. Fastenersshall meet the minimum and quality requirements for tappingscrews in accordance with ANSI/ASME B18.6.4 and ANSI/ASME B18.18.1M, 1987 or the pertinent standard, whicheveris more restrictive. Compliance is determined by test reportssubmitted by a qualified testing
39、 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 (0.84mm) steel.12.3 Drill point screws shall be tested using 54 mil (1.37mm) steel.TABLE 2 Torsional Streng
40、thSelf-Drilling Tapping ScrewsNominal ScrewSizeMinimum lb-in.Type BSDAMinimum lb-in.Type CSDB62424842 810 61 6512 92 10014 in. 150 156AType BSDspaced threads referred to as coarse thread.BType CSDmachine screw threads referred to as fine thread.TABLE 3 Torsional StrengthSelf-Piercing Tapping ScrewsN
41、ominal Screw Size Minimum lb-in.62473083910 56TABLE 4 Drill-Drive Test RequirementsNominalScrewSizeTest PlateThickness,Ain., MaxTest PlateThickness,Ain., MinAxialLoading,Blb, A, maxAxialLoading,Blb, B, MaxAxialLoading,Blb, C, MaxTime to Drilland FormThread,Cs, Max4 0.068 0.062 25 30 40 2.06 0.068 0.
42、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 RockwellB 80-85.BAxial loads are varied to offset the detrimental effects on drilling capabilitycreated
43、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.Column BAxial loads tabulated shall apply to special electroplated finishesexceeding 0
44、.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 through No. 10. Tool speedof 1800 rpm is recommended for screw sizes No. 12 and14; however, 2
45、500 rpmmay be used provided care is exercised to minimize influence of high heat buildupdue to surface speed.FIG. 2 Drill-Drive Test ApparatusC151304313. Specimen Preparation13.1 Where the number of steel coupon specimens is notnoted in the specific standard, a minimum of three steel couponspecimens
46、 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 A 370.13.2 Screw FastenersA minimum of three test specimensare to be tested for
47、tension (pull-out) and for the lap shearconnection. If the result from any one test is more than 15 %higher or lower than the other two, the lowest test value is used,unless an additional three tests are performed. Then use theaverage results of all six tests, regardless of the variation.14. Procedu
48、re14.1 If any of the first lot on the drill-drive testing fails, testanother lot. If two of that lot fail, the entire lot fails.15. Dimensional Measurement15.1 Self-Piercing ScrewsANSI/ASME B18.6.4.15.2 Self-Drilling Tapping ScrewsSAE J78.16. Ductility Test16.1 Self-Piercing ScrewsANSI/ASME B18.6.4.
49、16.2 Self-Drilling Tapping ScrewsSAE J78.17. Torsional Strength17.1 Self-Piercing ScrewsANSI/ASME B18.6.4.17.2 Self-Drilling Tapping ScrewsSAE J78.18. Inspection18.1 Inspection of the steel screws shall be agreed uponbetween the purchaser and producer or supplier as part of thepurchase agreement.19. Rejection and Rehearing19.1 Rejection of steel screws that fail to conform to therequirements of the specification shall be reported to theproducer or supplier promptly and in writing within 10working days from receipt of shipment. Notice
