ASME B107.4 pdf download

ASME B107.4 pdf download.Driving and Spindle Ends for Portable Hand, Impact, 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 millimeters.’
2 DEFINITIONS
percussion tools: hammers, chisels, scalers, tampers, clay diggers, and rock drills. Percussion tools are excluded from this Standard.
roundinç raIues: when the next digit beyond the last digit to be retained is
(a) less than 5, the last digit to be retained is not changed
(b) 5 or more, the last digit to be retained is increased by one.
tool: as used in this Standard, a portable device for performing a mechanical operation with power from cornpressed air or electricity and hand operated.
3 NORMATIVE REFERENCES
The following is a list of publications referenced in this Standard.
ANSI B1.1-I9g9ROl Ed, Unified Inch Screw Threads (UN and UNR Thread Form)
ANSI B7.1-2000, Safety Requirements for the Use, Care, and Protection of Abrasive Wheels
5 GAGE USE AND DESIGN
The illustrations shown herein are descriptive, not restrictive, and not intended to preclude the manufacturer of products or gages which 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 this gage size specified within this Standard. Thus, a gage that represents a minimum limit may be larger, hut 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.