DLA A A 59789 17A-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 250 X 290 INCH (6 35 x 7 37 mm) BODY SIZE WITH CAPTIVE REAR WEDGE SCREW ACTUATED.pdf
《DLA A A 59789 17A-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 250 X 290 INCH (6 35 x 7 37 mm) BODY SIZE WITH CAPTIVE REAR WEDGE SCREW ACTUATED.pdf》由会员分享,可在线阅读,更多相关《DLA A A 59789 17A-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 250 X 290 INCH (6 35 x 7 37 mm) BODY SIZE WITH CAPTIVE REAR WEDGE SCREW ACTUATED.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、INCHPOUND AA59789/17A 17 July 2012 SUPERSEDING AA59789/17 8 August 2008 COMMERCIAL ITEM DESCRIPTION SPECIFICATION SHEET HOLDER, ELECTRICAL CARD, WEDGE RETAINERS, 5 PIECE, FOR COLD PLATE APPLICATIONS, .250 X .290 INCH (6.35 x 7.37 mm) BODY SIZE, WITH CAPTIVE REAR WEDGE, SCREW ACTUATED The General Ser
2、vices Administration has authorized the use of this commercial item description for all federal agencies. The complete requirements for procuring electrical card holders described herein shall consist of this document and the latest issue in effect of AA59789. CLASSIFICATION/PART IDENTIFICATION NUMB
3、ER (PIN). This commercial item description (CID) specification sheet uses a classification system which is included in the PIN as shown in the following example (see notes). AA59789 CID number /17 Applicable CID sheet * Configuration (see table I) * Finish * * Length (see table II) * Mounting Exampl
4、e: AA59789/17CH30S is the PIN for a hard black anodized finished, 2.8 inch (71.1 mm) long card holder. The card holder also features two tapped mounting holes for use with 256 UNF 2B fasteners. SALIENT CHARACTERISTICS. Performance. Card holders shall hold the circuit card assembly it is attached to
5、firmly in its installed position and prevent loosening or movement as a result of shock and vibration. The card holder shall also provide a thermal transfer path from the circuit card assembly to the cold plate or heat sink surfaces. Interface and physical dimensions. The card holders supplied to th
6、is CID specification sheet shall be as specified herein and meet the general requirements specified in CID AA59789. Material. Unless otherwise specified herein, the card holder materials shall be as specified in AA59789. Actuating screw hex drive socket. The dimension for hex drive socket shall be .
7、094 inch (2.38 mm) across flats for mounting options “M“, “R“, “S“, “T“, and “U“. Cold plate slot width. The recommend cold plate slot width to accommodate the circuit card assembly with attached card holder is .325 inch (8.25 mm) plus the thickness of the printed board of the circuit card assembly
8、(see AA59789). Installation torque. The recommended nominal installation torque is follows: 6 inch-pounds (0.7 N-m) for card holders of configuration “C“ or “E“ and 7 to 8 inch-pounds (0.8 to 0.9 N-m) for assemblies of configurations “L“ or “D“. Configuration. The configuration of a card holder shal
9、l be as specified in table I. The details of a particular configuration consist of those on figure 1, and may include those on figures 2 and 3. AMSC N/A FSC 5998Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/17A 2 TABLE I. Configuration. Con
10、figuration Applicable figures Hardware options C 1 No added options L 1 and 2 Screw self-locking element E 1 and 3 Additional mounting hole D 1, 2, and 3 Screw self-locking element and additional mounting hole Inches mm Inches mm Inches mm Inches mm .250 6.35 .293 7.44 .350 8.89 .80 20.32 NOTES: 1.
11、Dimensions are in inches. Millimeter equivalents 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. Tolerance for the hole spacing is .005 inch (0.13 mm). 4. The across f
12、lats dimension for hex drive socket shall be .094 inch (2.38 mm). FIGURE 1. Relaxed and expanded dimensions. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/17A 3 Finish. The wedge body finish designator shall be as specified in AA59789. The
13、finishes 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 th
14、is CID specification sheet are listed in table II. The length, expanded, and relaxed dimensions shall be as specified on figure 1. table II TABLE II. Additional assembly dimensions (see figure 1). 1/ PIN length designator Dimension “Length“ .02 (0.5) Dimension “M“ .01 (0.3) Dimension “M/2“ .02 (0.5)
15、 30 2.80 (71.1) .90 (22.9) .45 (11.4) 40 3.80 (96.5) 1.90 (48.3) .95 (24.1) 50 4.80 (121.9) 2.90 (73.7) 1.45 (36.8) 1/ Dimensions are in inches. Millimeters, in parenthesis, are given for general information only. Mounting. The mounting designators shall be as specified in AA59789. The mounting opti
16、ons available for this CID specification sheet are as follows: “M“ (tapped metric M2.5 x 0.45 holes), “R“ (rivet mount holes with counterbore and countersink), “S“ (tapped 2-56 holes), “T“ (tapped 0-80 holes), or “U“ (tapped metric M2 x 0.4 holes). See figure 1 and table II for mounting hole spacing
17、 requirements. Rivet mounting holes. The holes used for rivet mounting shall be .068/.073 inch (1.73/1.85 mm) diameter through holes, countersunk 100 degrees by .060 inch (1.52 mm) deep. Rivets. This card holder uses rivet type A as specified in AA59789 when rivet mounting is used. Configuration har
18、dware options. Card holders can have the following options: no added hardware, screw self-locking element (see figure 2), an additional mounting hole (see figure 3), or a combination of both screw self-locking element and third mounting. See table I for the correct PIN configuration identifier for t
19、he hardware option needed. Card holders requiring no added hardware options shall include configuration identifier “C“ in the PIN (see classification and notes section herein). Screw self-locking element (see figure 2). The use of a screw self-locking element on the screw will provide a prevailing-t
20、orque for increased resistance to loosening of the card holder assembly from shock and vibration. The screw self-locking element shall be as specified in AA59789. Card holders requiring a screw self-locking element shall include configuration identifier “L“ in the PIN (see table I, classification an
21、d notes section herein). FIGURE 2. Screw self-locking element details. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/17A 4 Additional mounting hole (see figure 3). Card holders requiring an additional mounting hole shall include configurati
22、on identifier “E“ in the PIN (see table I, classification and notes section herein). FIGURE 3. Additional mounting hole details. Screw self-locking element and additionalmounting hole. Card holders requiring a screw self-locking element and an additional mounting hole options shall include configura
23、tion identifier “D“ in the PIN (see table I, classification and notes section herein). NOTES. PIN. The PIN should be used for Government purposes to buy commercial products to this CID specification sheet. See the classification section for PIN format example. Source of documents. Commercial Item De
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