1、Designation: C 954 07Standard Specification forSteel Drill Screws for the Application of Gypsum PanelProducts or Metal Plaster Bases to Steel Studs from 0.033in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness1This standard is issued under the fixed designation C 954; the number immediately following
2、the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved f
3、or use by agencies of the Department of Defense.1. Scope*1.1 This specification covers minimum requirements forsteel drill screws for use in fastening gypsum panel products ormetal plaster bases to steel members from 0.033 in. (0.84 mm)to 0.112 in. (2.84 mm) in thickness.1.2 This specification also
4、covers physical properties andtest methods for determining performance requirements.1.3 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.4 The following safety hazards caveat pertains only to thetest methods described
5、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 safety and health practicesand determine the applicability of regulatory limitations priorto use.2
6、. Referenced Documents2.1 ASTM Standards:2A 510 Specification for General Requirements for WireRods and Coarse Round Wire, Carbon SteelC11 Terminology Relating to Gypsum and Related Build-ing Materials and SystemsC 1396/C 1396M Specification for Gypsum BoardC 1513 Specification for Steel Tapping Scr
7、ews for Cold-Formed Steel Framing Connections3. Terminology3.1 Definitions:3.1.1 For definitions relating to gypsum and related buildingmaterials and systems, see Terminology C11.3.2 Definitions of Terms Specific to This Standard:3.2.1 steel drill screwself-drilling tapping screw with theability to
8、drill its own hole, form or cut mating threads withoutdeforming its own threads or breaking during assembly.4. Materials4.1 Screws shall be manufactured from Grade 1018 to 1022steel wire manufactured in accordance with SpecificationA 510.5. Physical Properties5.1 Metallurgical Requirements:5.1.1 The
9、 surface of the screw shall be carbonitrided to adepth of 0.004 to 0.008 in. (0.10 to 0.20 mm).5.1.2 The core hardness shall be 32 to 40 HRB after beingdrawn at a minimum temperature of 625 F (330 C).5.1.3 The screw shall have no band of free ferrite betweenthe case and core nor shall the case conta
10、in appreciableamounts of retained austenite or other soft constituents.5.1.4 Surface hardness shall be determined by a microhardness instrument at “the root of the thread profile,” asexposed by removal of enough material to form a flat surfacealong the length of the screw.5.1.5 DuctilityScrews shall
11、 have sufficient ductility to beable to withstand a 5 bend without visible signs of fracturewhen tested as specified in paragraph 8.2.1 of SpecificationC 1513.5.2 Dimensions and Permissible Variations:5.2.1 General:5.2.1.1 Head Diameter The head of the screw shall not beout of round more than 0.021
12、in. (0.51 mm) and have thefollowing shape and dimensions:5.2.1.2 Screw Diameter Screws shall have a major diam-eter not less than 0.136 in. (3.45 mm).5.2.1.3 Points, shall provide for self-drilling into steel studsfrom 0.333 in. (0.84 mm) to 0.112 in. (2.84 mm) in thicknessand meet the performance t
13、ests in Section 6.1This 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 Products.Current edition approved Aug. 1, 200
14、7. Published August 2007. Originallyapproved in 1981. Last previous edition approved in 2004 as C 954 04.2For 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 standar
15、ds Document Summary page onthe ASTM website.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, United States.5.2.1.4 Driving Recess, shall be a No. 2 “Phillips” designwith a minimum de
16、pth of 0.104 in. (2.64 mm) as determinedwith a “Phillips” penetration depth gage or a recess of equalperformance.5.2.1.5 LengthNominal lengths shall be minimum length.5.2.2 Screws for Fastening Gypsum Board:5.2.2.1 Screw-head minimum diameter shall be 0.3145 in.(8.00 mm).5.2.2.2 The top of the head
17、shall be flat. The outer flangethickness shall be 0.025 6 0.005 in. (0.64 6 0.13 mm). Thecontour beneath the flange head shall be such that the screwhead shall be able to be driven so that the head of the screwrests immediately below the surface of the gypsum panelproducts.5.2.2.3 The threads shall
18、extend to the lower edge of thehead contour.5.2.3 Screws for Fastening Metal Plaster Bases:5.2.3.1 Screw head minimum diameter shall be 0.437 in.(11.1 mm).5.2.3.2 The top of the head shall be flat or contoured. Theunderside of the head shall be flat.5.2.3.3 The threads shall extend to the underside
19、of thehead.6. Performance Requirements6.1 Spin-Out:6.1.1 Screws shall self-drill and drive into a stud 0.0598 in.(1.5 mm) thick with an approximate hardness of 65 HRBwithout spin-out.6.1.2 Screws shall self drill and drive into a stud 0.105 in.(2.7 mm) thick, with a hardness of 80 HRB without spin-o
20、ut.6.2 Performance:6.2.1 When tested in accordance with Section 10, screwsshall meet the requirements as follows:6.2.1.1 Gypsum Panel ProductsScrew threads shall beadequate to pull the head of the screw below the surface of thegypsum panel through four layers of kraft paper placed overthe gypsum pan
21、el products and a steel stud 0.033 in. (0.84 mm)thick when tested in accordance with 10.5.1.6.2.1.2 Metal Plaster BasesScrew threads shall be ad-equate to pull metal lath tight against the flange of a steel stud0.033 in. (0.84 mm) thick so that when subjected to a steadypull, the lath will tear and
22、not slip out from under the screwhead when tested in accordance with 10.5.1.7. Finish and Appearance7.1 Screws shall be corrosion-resistant treated with a mate-rial which will not inhibit adhesion to joint compounds orplaster and will not bleed through decorative finishes.7.2 Screws shall be straigh
23、t, clean, smooth, neatly formed,and free of defects such as burrs and deformations.8. Sampling8.1 Obtain not less than 90 screws from not less than fivecontainers.9. Number of Tests and Retests9.1 Test a minimum of five screws for each test. If any of thefirst lot fails, test 25 more screws.9.2 If t
24、wo or more of the second lot fail the second test, thenthe represented lot fails to meet the specified requirements.10. Test Method10.1 Summary of Test Method:10.1.1 This test method utilizes steel screws designed foruse to hold gypsum panel products and metal plaster basematerials applied with powe
25、r-driven screw guns of 2500 r/minmaximum to steel studs.10.2 Significance and Use:10.2.1 This test method evaluates the ability of steel drillscrews used to secure gypsum panel products and metal plasterbases to certain steel framing members.10.2.2 The test shall be conducted in a laboratory or on-s
26、ite.10.3 Apparatus:10.3.1 Power-Driven Drill Screw Gun, having the capacityof turning 2500 r/min maximum (free spindle speed).10.3.2 A Vice, or similar device to support the stud duringthe test.10.4 Materials:10.4.1 Kraft Paper, 0.010 in. (0.25 mm) thick.10.4.2 Steel StudOne section of 0.033-in. thi
27、ck stud(0.84-mm), 1 section of 0.0598-in. (1.5-mm) thick stud andwith a hardness of 65 HRB, and 1 section of 0.105-in.(2.7-mm) thick stud and with a hardness of 80 HRB.10.4.3 Gypsum Wallboard Specification C 1396/C 1396M, Type X,58 in. (16 mm) thick.10.4.4 Screw Specimens, to be tested.10.4.5 Diamon
28、d Mesh Metal Lath, 2.5/lb/yd2.10.5 Procedure for Performance Tests:10.5.1 Using the screw specimen, attach gypsum board ormetal lath to center of a flange of a steel stud which has beensecurely and rigidly supported.10.5.1.1 Grasp the metal lath with locking pliers and pullsteadily in a plane parall
29、el to the plane of the lath. Observewhether the lath tears before it slips out from under the screwhead.10.5.1.2 With the drill propelling the screw at 2500 r/minmaximum (free spindle speed), exert a total pressure of 30 lbf(135.5 N) (dead weight plus applied force).10.6 Precision and BiasNo stateme
30、nt is made regardingthe precision and bias of this test method, since the result of thetest method is reported in nonnumerical terms.11. Inspection11.1 Inspection of steel drill screws shall be agreed upon bythe purchaser and the producer or supplier as part of thepurchase agreement.12. Rejection an
31、d Rehearing12.1 Rejection of steel drill screws that fail to conform tothe requirements of this specification shall be reported to theproducer or supplier promptly and in writing within 10working days from receipt of shipment by the purchaser.Notice of rejection shall contain a specific statement as
32、 to therespects in which the screws have failed to conform to therequirements of this specification. In case of dissatisfactionwith the results of the test, and at the request of the producer orC954072supplier, such notice of rehearing shall be supported by resultsof a test conducted by a mutually a
33、greeable independentlaboratory.13. Certification13.1 When specified in the purchase agreement, the pro-ducer or supplier shall furnish a report certifying that, at timeof shipment, the screws were in compliance with the require-ments of this specification.14. Packaging and Marking14.1 Screws shall b
34、e packaged in substantial commercialcontainers constructed so as to preserve the contents in goodcondition and to ensure acceptance and safe delivery bycommon or other carriers, at the lowest rate, to the point ofdelivery.14.2 The containers shall be so constructed that the contentscan be partially
35、removed without destroying the containersability to serve as a receptacle for the remainder of thecontents.14.3 Individual packages and shipping containers shall bemarked with the type and length of screw and the name of themanufacturer or distributor.15. Keywords15.1 steel drill screw; steel self-d
36、rilling tapping screwSUMMARY OF CHANGESCommittee C11 has identified the location of selected changes to this specification since the last issue,C 954 04, that may impact the use of this specification. (Approved August 1, 2007)(1) Replaced reference to Specification C 36 with SpecificationC 1396/C 13
37、96M in 10.4.3 and Referenced Documents.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the
38、riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of
39、this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldma
40、ke your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C954073
