ASME B107.24:2002 pdf download LOCKING PLIERS
SCOPE
This Standard covers the dimensions and functionalcharacteristics of locking pliers that are suitable for gripping and wrenching operations. Some of the lockingwrench pliers are provided with cutters. Inclusion odimensional and functional data in this Standard is notintended to imply that all products described hereinare stock production sizes, Consumers are requestedto consult with manufacturers concerning lists of stockproduction sizes
2CLASSIFICATION
Pliers covered by this Standard shall be of the follow-ing type, class, and style, as specified.Iype I: Locking Pliers
Class 1: Straight JawsStyle A: Without Cutter
Class 2: Curved jawsStyle A: Without CutterStyle B: With Cutter
Class 3: Long Nose
Style A: Without CutterStyle B: With Cutter
Class 4: Smooth Jaws
Style A: Without Cutter
Type Il: Reserved for Future Use
3 NORMATIVE REFERENCES
The following is a list of publications referenced inthis Standard.
ASME B46.1-1995, Surface Texhure (Surface RoughnessWavinessand Lay)ASME B107.25-2002, Pliers: Performance Test MethodsPublisher: The American Society of Mechanical Engineers(ASME International), Thrce Park Avenue, NewYork,NY10016-5990;Order Department: 22 LawDrive,Box 2300,Fairfeld,N 07007-2300
4 REQUIREMENTS
4.1 Ilustrations
Illustrations shown herein are descriptive and notrestrictive, and are not intended to preclude the manu-facture of pliers that are otherwise in accordance withthis Standard.
4.2Material
Materials used in the manufacturing of the pliers shallbe such as to produce pliers conforming to the requirements hereinafter specified.
4.3Design
Pliers shall be similar to the figure to which referenceis made and shall be proportioned in all parts so as tcmeet the requirements of this Standard. Pliers shall bcprovided with a toggle or cam device having an adjustable mechanism designed so that the jaws can beclamped and locked. Pliers shall be released by handanywhere within the capacity of the pliers by any releasemechanismn similar to Fig. 1. Test specimens shall withstand applicable test procedures without cracking orbreaking
4.4 Handles
Handles of pliers shall be through hardened from 30HRC to 50 HRC or case hardened from 75 HR15N to86 HR15N with a case depth of a minimum of 0.010 in(0.25 mm) Handles shall be so shaped as to afford acomfortable grip and shall be free from rough edges andsharp corners.The minimum handle clearance betweenthe fixed and moveable handle shall be as specified inthe appropriate tables, when the pliers are locked in anyposition of the jaws. Outer hand-gripping surfaces ofhandles shall be smooth, knurled, or impressed.
4.5 Joints
Pliers joints shall have no excessive looseness, playor any other indications of side play of the two halvesof the pliers when opened or closed that would impairthe function of pliers, Joint fasteners shall be throughhardened from 25 HRC to 50 HRC.Where fastenersreceive a case hardening treatment in addition to thethrough hardening a maximum hardness of 60 HRC orequivalent will be permitted.
4.6 jaws
4.6.1 Jaw Opening5. Ends of jaws shall open, whenadjusted by the screw, to the respective minimum distance specified in Tables 4 through 8. Pliers shall operatein a smooth and uniform manner
4.6.2 jaw Hardness. Jaws shall be through hardenedfrom 45 HRC to 60 HRC or case hardened from 83
ASME B107.24:2002 pdf download
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