1、AMSC N/A FSC 5365 INCH-POUND MS51840D 7 January 2011 SUPERSEDING MS51840C 21 April 1983 DETAIL SPECIFICATION SHEET PLUG, MACHINE THREAD, O-RING Reactivated after 7 January 2011 and may be used for new and existing designs and acquisitions. This specification is approved for use by all Departments an
2、d Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and SAE J514, “Hydraulic Tube Fittings“. NOTES: 1. All dimensions are in inches. 2. Dash numbers and dimensions are shown in table I. FIGURE 1. Machine threa
3、d o-ring plug.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS51840D 2 TABLE I. Dash numbers and dimensions. (C) Hex (across flats) Dash no. TubeOD (ref) (B) Straight thread Max Min (D) Dia 0.015(G) Dia +0.002- 0.003(I) 0.005(L) 0.02(Q) Min (T) +0.
4、015 - 0.000 (V) Dia 0.015(X) Dia +0.000- 0.01521 0.125 .313-24UNF-2A 0.439 0.430 0.093 0.250 0.297 0.60 0.06 0.063 0.250 0.43822 0.188 .375-24UNF-2A 0.502 0.492 0.125 0.313 0.297 0.60 0.08 0.063 0.310 0.50023 0.250 .438-20UNF-2A 0.564 0.553 0.203 0.364 0.360 0.67 0.10 0.075 0.365 0.56324 0.313 .500-
5、20UNF-2A 0.627 0.616 0.234 0.427 0.360 0.67 0.12 0.075 0.425 0.62525 0.375 .563-18UNF-2A 0.690 0.679 0.297 0.482 0.391 0.73 0.16 0.083 0.480 0.68826 0.500 .750-16UNF-2A 0.877 0.865 0.422 0.660 0.438 0.80 0.22 0.094 0.660 0.87527 0.625 .875-14UNF-2A 1.002 0.990 0.500 0.773 0.500 0.93 0.25 0.107 0.775
6、 1.00028 0.750 1.063-12UN-2A 1.252 1.239 0.656 0.945 0.594 1.09 0.25 0.125 0.945 1.25029 0.875 1.188-12UN-2A 1.377 1.364 0.718 1.070 0.594 1.09 0.25 0.125 1.070 1.37530 1.000 1.313-12UN-2A 1.502 1.489 0.875 1.195 0.594 1.12 0.25 0.125 1.195 1.50031 1.250 1.625-12UN-2A 1.877 1.863 1.093 1.507 0.594 1
7、20 0.25 0.125 1.505 1.87532 1.500 1.875-12UN-2A 2.127 2.113 1.344 1.756 0.594 1.27 0.25 0.125 1.755 2.12533 2.000 2.500-12UN-2A 2.752 2.738 1.813 2.381 0.594 1.43 0.30 0.125 2.380 2.750REQUIREMENTS: 1. Dimensions. Dimensions shall be in accordance with figure 1 and table I. 2. Materials. 2.1 Carbon
8、 steel shall be in accordance with SAE AIR4127 and shall conform to one of the following SAE numerical designations of steel by composition: 1113, 1117, 1118, or 1137. 2.2 Corrosion resistant steel (CRES) shall be in accordance with ASTM A582/A582M, type 303, condition A, or alternatively, ASTM A276
9、 types 304 or 316, condition A. 3. Finish. 3.1 Carbon steel shall be cadmium plated in accordance with SAE AMS-QQ-P-416, type II, class 3, or phosphate coated in accordance with MIL-DTL-16232, type M, class 1. 3.2 CRES shall be cleaned and descaled in accordance with ASTM A380. 4. Threads. Threads
10、shall be in accordance with FED-STD-H28/2. 5. Sampling. Unless otherwise specified, sampling for conformance inspection shall be in accordance with ASQ Z1.4, inspection level II, with the acceptance quality limit (AQL) as specified in the contract. Sampling for tests of fittings shall be in accordan
11、ce with ASQ Z1.4, inspection level S-2, with the AQL as specified in the contract. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS51840D 3 NOTES: 1. For design feature and testing purposes, this document takes precedence over procurement specifica
12、tion SAE J514. 2. Unless otherwise specified, issues of referenced documents will be of the issue in effect on the date of solicitation. 3. The part or identifying number (PIN) to be used for machine thread o-ring plugs acquired to this specification sheet is created as follows: MS 51840 - XX XX Mat
13、erial finish code: P - Carbon steel, phosphate coated SS - CRES No code - Carbon steel, cadmium plated Dash number (se table I) Specification number MS prefix Example of reference part number: MS51840-21P CHANGES FROM PREVIOUS ISSUE. Marginal notations are not used in this revision to identify chang
14、es with respect to the previous issue due to the extent of the changes. Custodians: Preparing Activity: Army - AR Navy - OS DLA - GS DLA - GS4 (Project 5365-2010-001) Review Activities: Army - CR, CR4, EA, GL Navy - MC NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST database at https:/assist.daps.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
