ASME B107.4:2019 pdf download.Driving and Spindle Ends for Portable Hand, mImpact, Air, and Electric Tools(Percussion Tools Excluded).
ASME B107.4 applies to portable power tools for drilling, grinding, polishing, sawing, and driving threaded fasteners, and hand tools for driving threaded fasteners. Other tools not classed as percussion tools belong in this category and may be added by revision or addition through the usual procedure.
This Standard includes dimensions and tolerances for both driving and driven elements where such coordination is important and not established by reference to the pertinent American National Standards. All dimensions are in inches and millinwters.
2 DEFINITIONS
percussion tools: hammers, chisels, scalers, tampers, clay diggers, and rock drills. Percussion tools are excluded from this Standard.
rounding: In this Standard, calculated values are rounded off as follows:
(a) if the next digit after the last digit to be retained is less than 5, the last digit to be retained is not changed
(b) if the next digit after the last digit to be retained is 5 or greater, the last digit to be retained is increased by one tool: as used in this Standard, a portable device, either hand operated or powered by compressed air or electricity, for performing a mechanical operation.
3 REFERENCES
The following is a list of publications referenced in this Standard.
ANSI/ASME B1.1-1989 (R2001), Unified Inch Screw Threads (UN and UNR Thread Form)
ANSI B7.1-2 000, Safety Requirements for the Use, Care and Protection of Abrasive Wheels
ANSI B92.1-1996, Involute Splines and Inspection, Inch Version
Publisher: American National Standards Institute (ANSI), 25 West 43rd Street, New York, NY 10036 (www.ansi.org)
ISO 1174-1:2011, Assembly tools [or screws and nuts — Driving squares — Part 1: Driving squares for hand socket tools
ISO 1174-2:1996, Assembly tools for screws and nuts — Driving squares — Part 2: Driving squares for power socket tools
Publisher: International Organization for Standardization (ISO), Central Secretariat, Chemin de Blandonnet 8, Case Postale 401, 1214 Vernier, Geneva, Switzerland (www.iso.org)
4 ISO COMPATIBILITY
Italicization and bold type indicate ISO compatibility.
EXAMPLE: (38.214)
5 GAGE USE AND DESIGN
The illustrations shown herein are descriptive, not restrictive, and are not intended to preclude the manufacture of products or gages that are otherwise in accordance with this Standard.
Manufacturers may use gages with tighter dimensions or tolerances than shown herein to ensure product acceptance. Tolerances on gage dimensions within the Standard represent new manufactured or purchased gage sizes. The extreme size for all limit (GO and NO GO) gages shall not exceed the extreme limits of products specified within the Standard. All variations (manufacturing tolerance, calibration error, wear allowance, etc.) in the gages, whatever their cause or purpose, shall bring these gages within the extreme limits of the gage size specified within this Standard. Thus, a gage that represents a minimum limit may be larger, but never smaller, than the minimum specified for the product standard; likewise, the gage that represents a maximum limit may be smaller, but never larger, than the maximum size specified for the product standard.ASME B107.4 pdf download.