1、AMSC N/A FSC 5960 INCH-POUND MIL-DTL-24251/6E 11 July 2013 SUPERSEDING MIL-DTL-24251/6D 15 February 2008 DETAIL SPECIFICATION SHEET SHIELD, ELECTRON TUBE, HEAT DISSIPATING, 7 AND 9 PIN, MINIATURE (RETROFIT TYPE ONLY) The requirements for acquiring the product described herein shall consist of this s
2、pecification sheet and MIL-DTL-24251. This specification is approved for use by all Departments and Agencies of the Department of Defense. NOTES: 1. All dimensions are in inches. 2. Millimeters are in parentheses. 3. Metric equivalents (to the nearest 0.01 mm) are given for general information only
3、and are based upon 1 inch = 25.4 mm. 4. Unless otherwise specified, tolerance is 2 places .010 (0.25 mm); 3 places .005 (0.13 mm). FIGURE 1. Dimensions and configuration. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24251/6E 2 TABLE 1. Cha
4、racteristics. Dash no. Heat dissipation temp. reduction in C (minimum) A -.062 (1.57) B Max C dia .015 (0.38) Weight grams max Tube envelope Tube socket ref 2/ Style Length nom 1 25 1.500 (38.10) 1.625 (41.28) .875 (22.23) 11.0 T-5 1/2 1.125 (28.58) MIL-DTL-12883/2 2 40 2.000 (50.80) 2.125 (53.98) .
5、875 (22.23) 15.0 T-5 1/2 1.500 (38.10) 3 45 2.500 (63.50) 2.625 (66.68) .875 (22.23) 19.0 T-5 1/2 2.000 (50.80) 4 25 1.500 (38.10) 1.625 (41.28) 1.000 (25.40) 12.0 T-6 1/2 1.125 (28.58) MIL-DTL-12883/3 5 55 2.000 (50.80) 2.125 (53.98) 1.000 (25.40) 16.0 T-6 1/2 1.562 (39.67) 6 45 2.500 (63.50) 2.625
6、 (66.68) 1.000 (25.40) 20.0 T-6 1/2 2.000 (50.80) 7 1/ 45 2.750 (69.85) 2.875 (73.03) 1.000 (25.40) 22.0 T-6 1/2 2.812 (71.42) 1/ This shield is for use with noval tubes which are longer than usual tubes. 2/ Not recommended for new design. REQUIREMENTS: The shield, locking mechanism, liner, and othe
7、r parts shall be designed to meet the requirements in MIL-DTL-24251, and to fit the tube envelope and tube socket specified in table I. Dimensions and configuration: See figure 1 and table I. No special retainer (base) or adapter will be permitted. Material: Spring (when used): Beryllium copper, AST
8、M-B194, ASTM-B196/B196M and ASTM-B197/B197M. Shell: Aluminum alloy, SAE-AMS-QQ-A-250 (aerospace and unspecified applications), or ASTM-B209 (non-aerospace applications). Liner: Beryllium copper, ASTM-B194. Finish: Spring (when used): Black cadmium plate, SAE-AMS-QQ-P-416, class 1, type II. Shell: Bl
9、ack anodize, type II in accordance with MIL-A-8625, black matte in accordance with MIL-DTL-5541, optional finish: Henderlube or equal. Liner: Black cadmium plate, SAE-AMS-QQ-P-416, class 3, type II, optional finish: Henderlube or equal. Construction: The spring shall be held in place by friction or
10、by mechanical means if the maximum diameter is smaller than the inside diameter of the shield. The tension shall be such as will insure maximum compression of .125 inch (3.18 mm) over seated tube. The force required to compress spring to .375 inch (9.53 mm) shall be within 1.5 to 2.5 pounds. Spirals
11、 shall not touch each other. The end of the coil spring shall not contact the electron tube envelope. Installation force shall not exceed 20 pounds. Engaging torque: 20 inch-pounds maximum. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-2425
12、1/6E 3 The Part or Identifying Number (PIN) consists of the basic number of this specification sheet, preceded by the letter “M“, and a dash number taken from table I. Example: Referenced Documents: In addition to MIL-DTL-24251, this document references the following: MIL-DTL-5541 MIL-A-8625 MIL-DTL
13、-12883/2 MIL-DTL-12883/3 ASTM-B194 ASTM-B196/B196M ASTM-B197/B197M ASTM-B209 SAE-AMS-QQ-A-250 SAE-AMS-QQ-P-416 The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes
14、no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Custodians: Preparing activity: Army -
15、CR DLA - CC Navy - EC Air Force - 85 (Project 5960-2013-020) DLA - CC Review activities: Army - AR, AV, MI Navy - AS, CG, MC, OS, SH Air Force - 19, 99 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 Online database at https:/assist.dla.mil/. M24251/6-1 Basic document Dash number number from table Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
