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Standardization of screw threads, taps, gages and gage blanks, Jnincluding terminology, symbols, forms, designations, standard and special series, the dimensional limits for these series, thread gages and gaging, principles for determining dimensional limits of threads and thread gages and acceptability requirements. Not included are certain specialized screw threads such as those for fire hose couplings.  


The B1 Standards Committee currently meets twice a per year in various locations throughout the United States. The meetings are generally held in March/April and October/November and are open to the public. The B1 Subcommittees usually meet in conjunction with the B1 Standards Committee. The B1 Committees are comprised of experts in the field of screw threads. Members of the B1 Standards Committee are classified in the following interest classes: Producer/Manufactuer, Laboratory, Regulatory, Services, General Interest, and User. The Committee works on writing new ASME American National Standards, and revising current ASME B1 Standards. The B1 Standards Committee operates under procedures of the American National Standards Institute.

Officers Staff Contact
CHAIR Alan L. Barrows
VICE CHAIR Philip Larouche
Daniel Papert
The American Society of Mechanical Engineers
Two Park Avenue
New York, NY 10016
Phone: 1(212)591-7526
Associated Committee Pages
B1 Subcommittee 94 - Taps
US TAG to ISO/TC 1 - Technical Advisory Subcommittee (B1)
B1 Subcommittee 47 - Gage Blanks
Additional Committees
B18 Standardization of Bolts, Nuts, Rivets, Screws, Washers, and Similar Fasteners
B89 Dimensional Metrology
Board on Standardization and Testing
Y14 Engineering Product Definition and Related Documentation Practices
Other Links
ASME Product Catalog
Find a Standard
B94 Committee on Cutting Tools
Standards & Certification Update - Newsletter
William Sellers Screw Thread Standard at the Franklin Institute
B1 Standards in Product catalog
ASME Training courses

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