DLA A-A-59789 12 A-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 375 X 375 INCH BODY SIZE WITH TWO MOUNTING HOLES AND VISUAL LOCK INDICATION SCREW.pdf
《DLA A-A-59789 12 A-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 375 X 375 INCH BODY SIZE WITH TWO MOUNTING HOLES AND VISUAL LOCK INDICATION SCREW.pdf》由会员分享,可在线阅读,更多相关《DLA A-A-59789 12 A-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 375 X 375 INCH BODY SIZE WITH TWO MOUNTING HOLES AND VISUAL LOCK INDICATION SCREW.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、INCHPOUND AA59789/12A 12 June 2012 SUPERSEDING AA59789/12 4 May 2007 COMMERCIAL ITEM DESCRIPTION SPECIFICATION SHEET HOLDER, ELECTRICAL CARD, WEDGE RETAINERS, 5 PIECE, FOR COLD PLATE APPLICATIONS, .375 X .375 INCH BODY SIZE, WITH TWO MOUNTING HOLES AND VISUAL LOCK INDICATION, SCREW ACTUATED The Gene
2、ral Services Administration has authorized the use of this commercial item description for all federal agencies. The complete requirements for procuring 5 piece card holders described herein shall consist of this document and the latest issue in effect of AA59789. CLASSIFICATION/PART IDENTIFICATION
3、NUMBER (PIN). This commercial item description (CID) specification sheet uses a classification system which is included in the Part Identification Number (PIN) as shown in the following example (see notes herein). AA59789 CID number /12 Applicable CID sheet * Configuration (see table I) * Finish * *
4、 Length (see table II) * Mounting Example: AA59789/12AB60S is the PIN for a black anodized with dry film lubricant finished, 6.0 inches (121.9 mm) long card holder. The card holder also features two tapped mounting holes for use with 256 UNC 2B fasteners and has visual lock indication. SALIENT CHARA
5、CTERISTICS. Performance. Card holders shall hold the circuit card firmly in its installed position and prevent loosening or movement as a result of shock and vibration. It shall also provide a thermal transfer path from the circuit card assembly to the cold plate. Interface and physical dimensions.
6、The card holders supplied to this CID specification sheet shall be as specified herein and meet the general requirements specified in CID AA59789. The card holders shall have a visual indicator to show when the assembly is in its relaxed (unlocked) and expanded (locked) state. Material. Unless other
7、wise specified herein, the card holder materials shall be as specified in AA59789. Actuating screw hex drive socket. The across flats dimension for hex drive socket shall be .140 inch (3.60 mm) for mounting options “R“, “S“, and “V“ and .118 inch (3.0 mm) for mounting option “Y“. Cold plate slot wid
8、th. The recommend cold plate slot width to accommodate the circuit card assembly with attached card holder is .425 inch (10.80 mm) plus the thickness of the printed board of the circuit card assembly (see AA59789). Installation torque. The recommended nominal installation torque is as follows: 16 in
9、ch-pounds (1.8 N-m) for assemblies of configuration “A“ and “F“ and 20 inch-pounds (2.3 N-m) for assemblies of configurations “J“ and “N“. AMSC N/A FSC 5998 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/12A 2 Configuration. The configuratio
10、n of a card holder shall be as specified in table I. The details of a particular configuration consist of those on figures 1 and 2, and may include those on figures 3 or 4. TABLE I. Configuration. Configuration Applicable figures Hardware options A 1 and 2 No added options F 1, 2 and 3 Lockwasher an
11、d flat washer N 1, 2 and 4 Screw self-locking element J 1, 2, 3 and 4 Lockwasher, flat washer, and screw self-locking element Inches mm Inches mm Inches mm .24 .30 6.1 7.6 .330 .375 8.38 9.26 .470 .500 11.94 12.7 FIGURE 1. Relaxed and expanded dimensions. Provided by IHSNot for ResaleNo reproduction
12、 or networking permitted without license from IHS-,-,-AA59789/12A 3 NOTES: 1. Dimensions are in inches. Millimeters are given for general information only. 2. Unless otherwise specified, tolerances are .02 inch (0.51 mm) for two place decimals and .010 inch (0.25 mm) for three place decimals. 3. Con
13、figuration shown uses captive nut on rear wedge. Alternate design using threaded insert shall be acceptable. 4. The across flats dimension for actuating screw hex drive socket shall be .140 inch (3.60 mm) or .118 inch (3.0 mm) for the corresponding mounting option (see hex drive socket details). FIG
14、URE 1. Relaxed and expanded dimensions Continued. Visual lock indicator (see figure 2). Card holders shall have a visual indicator to show when the card holder is in its relaxed (unlocked) state. When the card holder is in the relaxed (unlocked) state, the end of the actuating screw shall display a
15、red band on the side of the screw. When the actuating screw on the card holder has been tightened so that the assembly is in the expanded (locked) position, this red band shall be concealed. FIGURE 2. Visual lock indicator. Finish. The finish designator shall be as specified in AA59789. The finishes
16、 available for this CID specification sheet are as follows: “B“ (black anodize), “E“ (electroless nickel), “H“ (hard black anodize), or “R“ (clear chemical film). Length, expanded, and relaxed dimensions. The length designator shall be as specified in AA59789 and the lengths available for this CID s
17、pecification sheet are listed in table II. The length, expanded, and relaxed dimensions shall be as specified on figure 1. TABLE II. Additional assembly dimensions (see figure 1). 1/ PIN length designator Dimension “Length“ .02 (0.5) Dimension “M“ .01 (0.3) 50 4.80 (121.9) 1.00 (25.4) 55 5.30 (134.6
18、) 1.00 (25.4) 60 5.80 (147.3) 1.00 (25.4) 65 6.30 (160.0) 1.00 (25.4) 1/ Dimensions are in inches. Millimeters, in parenthesis, are given for general information only. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/12A 4 Mounting. The mounti
19、ng designators shall be as specified in AA59789. The mounting options available for this CID specification sheet are as follows: “R“ (rivet mount using countersunk holes), “S“ (tapped 256 holes), “V“ (tapped 440 holes), or “Y“ (tapped metric M3 x 0.5 holes) shall be as specified in AA59789. See figu
20、re 1 and table I for mounting hole spacing requirements. Card holders using mounting option “R“ may be shipped unassembled. Rivet mount holes. The holes used for rivet mounting shall be .134/.139 inch (3.40/3.53 mm) diameter, countersunk 100 degrees by .190/.200 inch (4.83/5.08 mm) diameter through
21、holes with a counterbore of .190/.200 inch (4.83/5.08 mm) diameter by .300 inch (7.62 mm) deep. Rivets. This card holder uses rivet style B as specified in AA59789 when rivet mounting is used. Configuration hardware options. Card holders can have the following hardware options: no added hardware, lo
22、ckwasher and flat washer, screw self-locking element, or a combination of both lockwasher and flat washer and screw self-locking element. See table I for the correct PIN configuration identifier. Card holders requiring no added hardware options shall include configuration identifier “A“ in the PIN (
23、see table I, classification, and notes section herein). Lockwasher and flat washer (see figure 3). A lockwasher and flat washer located under the screw head will provide for additional resistance to loosening from shock and vibration. Card holders requiring a lockwasher and flat washer shall include
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