1、MIL-D-50998 (All) AMENDMENT 2 9 April. 199% _ SUP ERS EDTNG AMENDMENT 1 9 December 1986 MILITARY SPECIFICATION DETONATOR, STAB, M76 This Amendment forms a part of Military Specification MIL- D-50998 (MU) dated 7 December 1971, and is approved for use by the US Army Armament Munitions and Chemical Co
2、mmand and and Agencies of the Department of Defense.- - PAGE 9 4.3.2.5: Delete Major 102, Minor is available Tor use by all Departments 201 and Minor 202. 4.3.2.6: Classification of defec,s, add ,he following: lMajor 104. Closing disc loose or perforated Visual. Minor 204. Closing disc wrinkled or f
3、olded . Visual. Minor 205. Crimp not full 360 degrees . . Visual.“ PAGE 13 3; 4.4.1.1: Delete paragraph 4.4.1.1 in its entirety and substitute the following: AMSC N/A 114.4.1.1 Primer mixture PA-100 (see 4.3.3.1). - Transfer an accurately weighed portion of approximately one gram of the primer mixtu
4、re to a tared aluminum weighing dish provided“with a teflon cover while both the dish and the cover are on the balance pan. contents with the cover removed, in an oven maintained at 60 degrees + 5 degrees C for 2 hours. The cover shall be placed in a-desiccator during the drying period. After drying
5、, transfer the dish and contents quickly to a desiccator and cool in room temperature. Replace the plastic cover and weigh. Calculate the loss in weight of the dish, cover and contents to percent moisture in the sample Place the dish and 1 of 3 FSC 1330 DISTRIBUTION STATEMENT A. Approved for public
6、release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-5099 (2) 13 = 999990b 0523344 O 9 I MIL-D-50998 (AR) AMENDMENT 2 4.4,1,1,1 Moisture content, alternate method (see 4.3.3.1), with the following exception. a vac
7、uum oven at a temperature of 60 t 5 degrees C and a pressure of 80 t 10 mm of mercury for-45 minutes.“ The procedure is the same as paragraph 4.4.1.1 The sample shall be dried in - PAGE 14 * 4.4.1.3: Delete paragraph 4.4.1.3 in its entirety and substitute the following: 114.4.1,3 Determination of mo
8、isture content of lead azide (see 4.3.3.1). - A,tared dried aluminum dish 2 inches in diameter shall be covered with a sheet of teflon 2 i/2 inches square and sufficiently flat to form a tight cover. An accurately weighed portion of approximately two grams shall be transferred to the moisture dish w
9、hile both the cover and dish are on the balance pan. contents shall be transferred to an oven and dried at 95 degrees C. plus or minus (-k) 5 degrees C for 2 hours, The cover shall be placed in a desiccator during the drying period. After drying, the dish shall be quickly transferred to the desiccat
10、or and allowed to cool to room temperature. and the assembly weighed, calculated to percentage of moisture in the lead azide as follows : The dish and The teflon cover shall be placed on the dish The loss in weight shall be Percentage of moisture = A-B x 100 - A Where: A = the weight of the specimen
11、 before drying. B = the weight of the specimen after drying, 4.4.1.3.1 Determination of moisture content of lead azide, alternate method (see 4.3.3.1). - The procedure is the same as paragraph 4.4.1.3 with the following exception. The sample shall be dried in a vacuum oven at a temperature of 95 + 5
12、 degrees C and a pressure of 80 t 10 mm of mercury for 45minutes. - , 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2 .+ MIL-D-50998 (2) 13 9999906 0523345 2 W MIL-D-50998 (AR) AMENDMENT 2 4.4.2.6, line 3: Delete “minus sixty-five (-65) degrees F
13、I1 and substitute “minus fifty (-50) degrees FIf. NOTE: The margins of this amendment are marked with an asterisk or vertical line to indicate where changes (additions, modification, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government
14、 assumes 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 amendment. Custodian: Army-AR Preparing activity: Army-AR (Project 1330-A370) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
