1、AMSC N/A 1 of 3 FSC 5310DISTRIBUTION STATEMENT A. Approve for public release; distribution is unlimited.MS16286A6 April 1997SupersedingMS1628624 September 1957MILITARY SPECIFICATION SHEETNUT, HEXAGON, FINISHED, HEAVY, UNC-2B AND 8N-2B,HIGH TEMPERATURE - TO 1000FThis specification is approved for use
2、 by all Departmentsand Agencies of the Department of Defense.The requirements for acquiring the product described herein shall consistof this specification sheet and the issue of the following specification listedin that issue of the Department of Defense Index of Specifications andStandards (DoDISS
3、) specified in the solicitation: MIL-S-1222.A Entire document revisedINCH-POUNDProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS16286A2Table I. Dash Numbers and Dimensions.Dash Threads Width Across Flats Width Across Corners ThicknessNumber Size Per
4、 F G HInch Max Min Max Min Max Min-1 .2500 20UNC-2B .4375 .428 .505 .488 .226 .212-2 .3125 18UNC-2B .5000 .489 .577 .557 .273 .258-3 .3750 16UNC-2B .5625 .551 .650 .628 .337 .320-4 .4375 14UNC-2B .6875 .675 .794 .768 .385 .365-5 .5000 13UNC-2B .7500 .736 .866 .840 .448 .427-6 .5625 12UNC-2B .8750 .8
5、61 1.010 .982 .496 .473-7 .6250 11UNC-2B .9375 .922 1.083 1.051 .559 .535-8 .7500 10UNC-2B 1.1250 1.088 1.299 1.240 .665 .617-9 .8750 9UNC-2B 1.3125 1.269 1.516 1.447 .776 .724-10 1.0000 8UNC-2B 1.5000 1.450 1.732 1.653 .887 .831-11 1.1250 8UN-2B 1.6875 1.631 1.949 1.859 .999 .939-12 1.2500 8UN-2B 1
6、.8750 1.812 2.165 2.066 1.094 1.030-13 1.3750 8UN-2B 2.0625 1.994 2.382 2.273 1.206 1.138-14 1.5000 8UN-2B 2.2500 2.175 2.598 2.480 1.317 1.245-15 1.7500 8UN-2B 2.6250 2.538 3.031 2.893 1.540 1.460-16 2.0000 8UN-2B 3.0000 2.900 3.464 3.306 1.763 1.675-17 2.2500 8UN-2B 3.3750 3.262 3.897 3.719 1.970
7、1.874-18 2.5000 8UN-2B 3.7500 3.625 4.330 4.133 2.193 2.089-19 2.7500 8UN-2B 4.1250 3.988 4.763 4.546 2.415 2.303-20 3.0000 8UN-2B 4.5000 4.350 5.196 4.959 2.638 2.518Requirements:1. MATERIAL: Material shall be alloy steel, carbon-molybdenum, Grade 4 in accordance with MIL-S-1222,or alloy steel, chr
8、omium-molybdenum, Grade 7 in accordance with MIL-S-1222.2. THREAD: The threads shall be in accordance with ASME B1.1. Thread acceptability shall be in accordancewith ASME B1.3M, System 21.3. Use: These nuts are for use in high temperature piping systems.4. PART NUMBER: The MS part number consists of
9、 the MS number, plus the dash number from Table I.Example: MS16286 -1Dash numberBasic MS numberNOTES:1. Dimension are in inches unless otherwise specified.2. Interpret drawing in accordance with ASME Y14.5M.3. In the event of a conflict between the text of this document and the references cited here
10、in, the text of thisdocument shall take precedence.4. Unless otherwise specified, issues of referenced documents are those in effect at the time of solicitation.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS16286A3Military Interests:Custodians: Preparing activity:Army - AR DLA - ISNavy - SH Reviewer: (Project 5310-2295)Army - ME, MIProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
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