ASME B107.100:2020 pdf download

ASME B107.100:2020 pdf download.Flat Wrenches
1 SCOPE
This Standard provides performance and safety re- quirements for combination, open end, box, and flare nut wrenches; open end adjustable wrenches, with rack and worm adjustment, generally used on both hexa- gonal and square fasteners; crowfoot wrenches having a wrench componentofthe open end type or flare nuttype; and ratchetingbox wrenches used in hexagonal (6-point), double-hexagonal (12-point), square (4-point), and double-square (8-point) wrenching applications. The tools covered herein are listed by Category number in Table 4-1. Inclusion of dimensional data in this Standard is not intended to imply that all of the products described herein are stock production sizes. Manufacturers may make sizes not listed in this Standard. Consumers are requested to consult with manufacturers concerning lists of stock production sizes.
2 DEFINITIONS
adjusting worm: portion ofthe wrench used to adjust the clearance between the fixed and movable jaws. anglewrench: a wrench with one end havingan angle over 55 deg. box wrench: wrench with an enclosed opening that grips all faces of the fastener. combination wrench: awrench thatis openonone endand box on the other. engineer’s wrench: in this Standard, a wrench that is open on one end, different size open on the other. NOTE: Industrymayreferto single-ended open end wrenches as engineer’s wrenches. fixed jaw: portion ofthe frame that contacts the fastener. flare nutwrench: wrench thatis used for grippingthe nuts on the ends of tubes, with a slotted box end. frame: portion ofthe wrench containing the fixed jaw and handle. handle: portion of the wrench by which the tool is held. ignition wrench: a thin angle wrench. movable jaw: movable portion of an adjustable wrench that contacts the fastener. offset: pitch, or rotation around a transverse horizontal axis.open end wrench: wrench with a U-shaped opening that grips two opposite faces ofa fastener. The other end may be another open end or a nonwrenching end (handle). prooftorque:predeterminedtesttorquetowhichasample is subjected. reversing lever: device to control the reversing mechanism. reversing torque: force to rotate the wrench in the ratch- eting or nonloading direction. shifter: device to control the reversing mechanism. slottedbox: box wrench end with an opening smaller than the width across flats. See also flare nut wrench. tappet wrench: open end wrench where the head or openingis thinnerthan standard wrenches to allowclear- ance to adjust valve trains. worm pin: pin used to retain the adjusting worm in the frame. worm spring: spring used to induce friction between the frame and adjustingworm forholdingthe adjustingworm in any preset position.
5 PERFORMANCE REQUIREMENTS
The illustrations shown herein are descriptive and not restrictive; they are not intended to preclude the manu- facture ofwrenches thatare otherwise in accordance with this Standard. Wrenches shall provide a well-proportioned comfor- table handgrip and be similar to the figure to which refer- ence is made. The engaging surfaces of the wrench openings shall be finished in a smooth and well- defined manner. Wrenches shall pass applicable tests in section 6. Conformance with marking and other requirements not determined by test shall be verified by visual exam- ination. When tested as specified, wrenches shall withstand the prooftorque specified in applicable tables withoutfailure or permanent deformation (set) that might affect the durability or serviceability of the wrenches. U.S. Customary table values are in inches unless other- wise specified. Metric table values are in millimeters unless otherwise specified. Wrenches shall meet the dimensional requirements in applicable tables.