ASME B18.16.4:2008 pdf free download

ASME B18.16.4:2008 pdf free download.Serrated Hex Flange Locknuts90,000 psi (Inch Series).
ASME B18.16.4 covers the general, dimensional, and mechanical performance requirements for low strength carbon steel, case hardened, regular and large serrated flange locknuts (inch series), recognized as American National Standard.
2 COMPARISON TO ISO STANDARDS
There is no inch series ISO standard for these products at this time.
3 TERMINOLOGY
For definitions of terms relating to fasteners or component features used in this Standard, refer to
ASME B18.12.
4 REFERENCE STANDARDS
The following is a list of publications referenced in this Standard.
ASME Bl.1, Unified Inch Screw Threads
ASME Bl.3, Screw and Thread Gaging Systems for Dimensional Acceptability — Inch and Metric Screw Threads (UN, UNR, UNJ, M, and MJ)
ASME B18,12, Glossary of Terms for Mechanical Fasteners
ASME B18.18.2M, Inspection and Quality Assurance for High-Volume Machine Assembly Fasteners
ASME YI4SM, Dimensioning and Tolerancing
Publisher: The American Society Of Mechanical Engineers (ASME), Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, P.O. Box 23(X), Fairfield, NJ 07007-2300
ASTM F 606, Test Methods for Determining the
Mechanical Properties of Externally and Internally
Threaded Fasteners, Washers, Direct Tension
Indicators, and Rivets
ASTM F 812, Specification for Surface Discontinuities of Nuts, Inch Series
ASTM F 1941, Elcctrodeposited Coatings on Threaded Fasteners (Unified Inch Screw Threads (UN/UNR)I
ASTM F 2282, Standard Specification for Quality Assurance Requirements for Carbon and Alloy Steel Wire, Rods, and Bars for Mechanical Fasteners
Bolt length shall be such that a minimum length equivalent to six thread pitches as measured from the end of the bolt will protrude through the nut when the nut is seated.
(c) Test Strip. The steel strip must be a minimum of 0.060 in. thick, having a hardness between HRB 60 and HRB 90. The strip must have holes for placing the bolt through that are 0.010 in. to 0.025 in. over the bolt’s nommal thread diameter.
(d) Torque Measuring Device. Test results may be measured by an analog or digital device that is capable of indicating and holding a peak torque value. The analog or electronic measuring system shall have a certified accuracy of ± 2% or less.
13 FINISH
Unless otherwise specified, nuts shall be furnished with an electrodeposited zinc-plated finish in accordance with ASTM F 1941, Fe/Zn 3A.
14 GRADE AND IDENTIFICATION MARKING
Unless otherwise specified by the purchaser, these nuts shall have no grade marking requirements. Nuts 1/4 in. and above in diameter shall be marked with the source identification marking.
15 INSPECTION AND QUALITY ASSURANCE
Unless otherwise specified by the purchaser, inspection of serrated flange locknuts shall be in accordance with ASME B18.18.2M.
16 DESIGNATION
Serrated hex flange locknuts shall be designated by the following data, preferably in the sequence as follows:
(a) product name and designation of standard
(ASME B18.16.4)
(b) nominal diameter and thread pitch
(c) steel property class or material identification, and protective coating, if required.
EXAMPLE: Regular serrated flange locknut, ASME B18.16.4, ‘-13, zinc plated per ASTM F 1941 Fe/Zn 3A.
17 OPTIONS
Options, where specified, shall be at the discretion of the manufacturer, unless otherwise agreed between manufacturer and purchaser.
18 WORKMANSHIP
Nuts shall be free of surface irregularities that might affect their serviceability, such as burrs, seams, laps, loose scale, and other irregularities. While control of surface discontinuities is important for the application intended, ASTM F 812 shall be specified by the purchaser.