ASMEB18.6.11981(R1997)英制木螺钉VIP专享

f \ WOOD SCREWS < 1 IF1 NOTES: I. ASME 818.6.1 (R 1997) is a standard developed through the proce- dures of The American Society of Mechanical Engineers. 818.6.1 is under the jurisdiction of ASME Standards Committee 818 and is the direct responsibility of its Subcommittee 6. 2. During the past several years user demand for round head wood screws has declined. 878.6.1 still includes, as an appendix, data on round head wood screws, but strongly recommends their re- placement in new designs with pan head wood screws. IF1 sup- ports this recommendation and for this reason data on round head wood screws is not included in this reprint. For the omitted infor- mation, refer to the complete standard. 3. There are no American National Standards for square recess wood screws. However, these products are popular in Canada and have gained considerable acceptance by industry in the United States. Information on square recess flat countersunk and oval counter- sunk wood screws is given in Section I. 4. The following reprint of 818.6.1 (R 1997) has been edited to conve- nience the reader. No change of any kind has been made to techni- cal content. 5. ASME B18.6.1-1981 (R 1997) is reprinted with the permission of its publisher, The American Society of Mechanical Engineers, Three Park Avenue, New York, NY 10016-5990, U.S.A. 1. Introductory Notes 1.1 Scope 1 . I .I This standard covers the complete gen- eral and dimensional data for the various types of slotted and recessed head wood screws rec- ognized as "American National Standard." Also included are appendixes which provide specifi- cations and instructions for penetration gaging, (see page H-52), and wobble gaging (see page H-55), of recessed head s...