GB 4706.61-2002
Replaced
GB/T 39542.2-2025
Active
National standards
GB/T 39542.2-2025 Mechanical pencils for technical drawings—Part 2:Black leads—Classification and dimensions
GB/T 39542.2-2025 Mechanical pencils for technical drawings—Part 2:Black leads—Classification and dimensions
Basic Information
Standard Code:
GB/T 39542.2-2025
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Cultural and educational items, sports equipment, and entertainment products
ICS Name:
Other household and commercial equipment
Publish Date:
2025-05-30
Implement Date:
2025-05-30
Pages:
12 pages
Scope
This document specifies the classification and dimensions of black lead cores for technical drawing pencils.
This document applies to two types of black lead cores:
—— Resin lead cores (marked with the letter "P");
—— Clay lead cores (marked with the letter "C").
Development Information
Same series standard
Replace the following standards
Referenced Standards
ISO 128-2
ISO 9177-1
Adopt standards
ISO 9177-2:2022
Related Standards
GB 4706.66-2003
Replaced
GB 4706.66-2003 Safety of household and similar electrical appliances—Particular requirements for pumps
GB 4706.74-2004
Replaced
GB 4706.74-2004 Safety of household and similar electrical appliances—Particular requirements for sewing machines
GB 4706.76-2004
Replaced
GB 4706.76-2004 Household and similar electrical appliances—Safety—Particular requirements for insect killers
GB 4706.18-2005
Replaced
GB 4706.18-2005 Household and similar electrical appliances—Safety—Particular requirements for battery chargers
GB 4706.81-2006
Replaced