ASME B18.2.1-2012(R2021)
Square@ Hex@ Heavy Hex@ and Askew Head Bolts and Hex@ Heavy Hex@ Hex Flange@ Lobed Head@ and Lag Screws (Inch Series) (Includes Errata July 2013)
- Standard No.
- ASME B18.2.1-2012(R2021)
- Published By
- American Society of Mechanical Engineers (ASME)
- Latest
- ASME B18.2.1-2012(R2021)
- Scope
- This Standard covers the complete general and dimensional data for nine product types of inch series square and hex bolts and screws. Hex flange head and lobed head designs are new in this revision, as are screw sizes 1 5/8, 1 7/8, and 3 1/8 through 6 inches. Appendices covering gages and gaging information plus formulas on which dimensional data are based are included. Heavy hex structural bolts, formerly covered in ANSI B18.2.1, are now covered in ASME B18.2.6.
ASME B18.2.1-2012(R2021) history
- 0000 ASME B18.2.1-2012(R2021)
- 2012 ASME B18.2.1-2012 Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series)
- 2010 ASME B18.2.1-2010 Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series)
- 2003 ASME B18.2.1 Erratum-2003 Square and hex bolts and screws (Inch series); Erratum to ASME B18.2.1-1996
- 1996 ASME B18.2.1-1996 Square and hex bolts and screws (Inch series)
- 1990 ASME B18.2.1 Supplement-1990 Supplement to ANSI B 18.2.1-1981: Square and hex bolts and screws - Inch series
- 1981 ASME B18.2.1-1981 Square and hex bolts and screws - Inch series
