DLA MS27741 REV A-2004 CONNECTOR ELECTRICAL INDIVIDUAL SHIELD TERMINATION《屏蔽终止电连接器》.pdf

1、 MS27741A INCH-POUND 9 July 2004 SUPERSEDING MS27741 (USAF) 17 February 1971 DETAIL SPECIFICATION SHEET CONNECTOR, ELECTRICAL, INDIVIDUAL SHIELD TERMINATION This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product

2、 described herein shall consist of this specification sheet. Inches mm .045 1.143 .4375 11.1125 FIGURE 1. Dimensions and configurations. AMSC N/A FSC 5935 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27741A 2Dash number Entry dia A dia max Numbe

3、r of slots Weight in lbs (grams) 2 .250 (6.350) .545 (13.843) 3 .005 (2.268) 3 .375 (9.525) .670 (17.018) 4 .006 (2.722) 4 .500 (12.700) .795 (20.193) 6 .007 (3.175) 5 .625 (15.875) .920 (23.368) 8 .009 (4.082) 6 .750 (19.050) 1.045 (26.543) 10 .010 (4.536) 7 .875 (22.225) 1.170 (29.718) 10 .011 (4.

4、990) 8 1.000 (25.400) 1.295 (32.893) 12 .012 (5.443) 9 1.125 (28.575) 1.420 (36.068) 15 .014 (6.350) 10 1.250 (31.750) 1.687 (42.850) 15 .023 (10.433) 11 1.375 (34.925) 1.812 (46.025) 15 .032 (14.515) NOTES: 1. Dimensions are in inches. 2. Metric equivalents are in parenthesis and given for informat

5、ion only. 3. Unless otherwise specified, tolerance shall be 0.XX .03 (.762 mm) and 0.XXX .015 (.381 mm). 4. Angular tolerances shall be X 2. FIGURE 1. Dimensions and configurations - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27741A

6、 3Requirements: Design and construction: See figures 1, 2, and 3. Material: a. Body: Aluminum alloy in accordance with SAE-AMS-QQ-A-225 and ASTM B211. b. Nut: Aluminum alloy in accordance with SAE-AMS-QQ-A-225 and ASTM B211. c. Spring: Copper alloy d. Friction washer: Teflon. Finish: a. Body: Gold i

7、ridite in accordance with MIL-C-5541. b. Nut: Gold iridite in accordance with MIL-C-5541. Shield compensation: Captivated spring member in clamp nut compensates for differences in shield thickness of at least 0.020 inch (.508 mm) between adjacent slots in body. Shield accommodation: Each slot in bod

8、y will accommodate up to .180 inch (4.572 mm) total shield thickness. Ground lead pullout. Retention of ground leads shall meet the requirements of SAE-AS21608. Items described in this drawing are covered by US Patent No 3,465,092. Illustrations copyrighted by Glenair, Inc 1968. However, the US Gove

9、rnment has been granted, in writing by Glenair Inc, the continued rights to use this copyrighted material. Assembly instructions: The following instructions are suggested assembly procedures only. Actual termination and assembly method will depend on the accepted techniques of the user. The TAG ring

10、 requires no special assembly tools and can be assembled by hand. However, the user may find it preferable to use soft jaw pliers for final tightening of the TAG rings. In all cases, a self-pigtailing technique for the individual shields is used, with the point at which the conductors are extracted

11、through the shields to be determined by the particular connector involved. For solder contact connectors, the length of the extracted conductor will be shorter than for crimp contact connectors. It is suggested that all shield pigtails be flattened before installing the TAG ring. TAG Ring: a. Place

12、TAG ring on wire bundle or cable with castellated (slotted) face of body toward termination end of cable (see figure 2, step 1). b. If shielded conductors have an outer jacket, strip jacket to desired length. Extract conductors through shields at location desired for installation of TAG ring. Flatte

13、n shield pigtails. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27741A 4Step 1 c. With shields held against wire bundle, separate clamp nut from body. Flare shields outward, perpendicular to wire bundle (see step 1). Step 2 d. Place shields in s

14、lots of body making sure shields are distributed as uniformly as possible among the slots (spring member in clamp nut will compensate for differences in shield thickness of at least .020 inch (.508 mm) between adjacent slots). If desired, shields can be doubled to achieve more uniform thickness betw

15、een adjacent slots (see step 2). Step 3 e. Install ground lead in 2 slots of body, by looping around a body tab as shown in step 3. Connect ground lead to selected termination point. FIGURE 2. Assembly instructions. Provided by IHSNot for ResaleNo reproduction or networking permitted without license

16、 from IHS-,-,-MS27741A 5Step 4 f. Fold shields over knurled surface of body and engage clamp nut aligning tabs of clamp nut spring with slots in body. Tighten securely as shown in step 4. Hand tightening can be used, but if preferred, soft jaw pliers can be used for final tightening. Step 5 g. Trim

17、excess shields to desired length, either flush with surface of TAG ring or to any length desired. For future reparability, it is suggested at least .5 inch (12.7 mm) shield lengths be retained (see step 5). Step 6 h. If desired, safety wire can be installed through hole provided in clamp nut. Simply

18、 loop wire through hole and tighten as shown in step 6. With safety wire installed between two body tabs, it works similar to a cotter pin to prevent accidental loosening. FIGURE 2. Assembly instructions - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without licens

19、e from IHS-,-,-MS27741A 6Step 7 i. TAG ring can be insulated by installing heat shrinkable sleeving over completed assembly (see step 7). FIGURE 2. Assembly instructions - Continued. FIGURE 3. Completed assembly. Part or Identifying Number (PIN) example: MS27741 -6 MS number Dash number Changes from

20、 previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27741A 7Reference documents. This document re

21、ferences the following: MIL-C-5541 SAE-AMS-QQ-A-225 ASTM B211 SAE AS21608 CONCLUDING MATERIAL Custodians: Preparing activity: Air Force - 11 DLA - CC DLA - CC (Project 5935-4419-025) Review activity: Air Force - 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 http:/www.dodssp.daps.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-