DLA A A 59789 18A-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 AND VISUAL LOCK .pdf
《DLA A A 59789 18A-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 AND VISUAL LOCK .pdf》由会员分享,可在线阅读,更多相关《DLA A A 59789 18A-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 AND VISUAL LOCK .pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、INCHPOUND AA59789/18A 18 July 2012 SUPERSEDING AA59789/18 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 AND VISUAL LOCK INDICATION, SCR
2、EW ACTUATED The General Services 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. CLASSIFICATI
3、ON/PART IDENTIFICATION NUMBER (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 /18 Applicable CID sheet * Configuration (see table I) * Finish * * Length (see
4、table II) * Mounting Example: AA59789/18DE40T is the PIN for an electroless nickel finished, 3.8 inch (96.5 mm) long card holder. The card holder also features three tapped mounting holes for use with 080 UNF 2B fasteners and a screw selflocking element for added resistance to loosening. SALIENT CHA
5、RACTERISTICS. Performance. Card holders shall hold the circuit card assembly it is attached to 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
6、plate or heat sink surfaces. Interface and physical dimensions. The card holders supplied to this CID specification sheet shall be as specified herein and meet the general requirements specified in CID AA59789. Card holders shall have a visual indicator to show when the assembly is in its relaxed (u
7、nlocked) and expanded (locked) state. 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 .094 inch (2.38 mm) across flats for mounting options “M“, “R“, “S“, “T“, and “
8、U“. Cold plate slot width. The recommended 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 (see AA59789). AMSC N/A FSC 5998Provided by IHSNot for ResaleNo reproduction
9、 or networking permitted without license from IHS-,-,-AA59789/18A 2 Inches mm Inches mm Inches mm Inches Mm .227 .23 5.77 5.84 .250 .293 6.35 7.44 .350 .35 8.89 8.9 .80 20.32 NOTES: 1. Dimensions are in inches. Millimeter equivalents are given for general information only. 2. Unless otherwise specif
10、ied, 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 flats dimension for hex drive socket shall be .094 inch (2.38 mm). FIGURE 1. Relaxed and expanded dimensions. Instal
11、lation 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 shall be as specified in
12、table I. The details of a particular configuration consist of those on figures 1 and 2, and may include those on figures 3 and 4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/18A 3 TABLE I. Configuration. Configuration Applicable figures H
13、ardware options C 1 and 2 No added options L 1, 2 and 3 Screw self-locking element E 1, 2 and 4 Additional mounting hole D 1, 2, 3 and 4 Screw self-locking element and additional mounting hole Visual lock indicator (see figure 2). Card holders shall have a visual indicator to show when the card hold
14、er is in its relaxed (unlocked) state. When the card holder is in the unlocked (relaxed) state, the end of the actuating screw shall display a red band on the side of the screw. When the actuating screw on the card holder has been tightened (assembly expanded) so that the assembly is in the locked p
15、osition, this red band shall be concealed. FIGURE 2. Visual lock indicator. Finish. The wedge body finish designator shall be as specified in AA59789. The finishes available for this CID specification sheet are as follows: “B“ (black anodize), “E“ (electroless nickel), “H“ (hard black anodize), or “
16、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 specification sheet are listed in table II. The length, expanded, and relaxed dimensions shall be as specified on figure 1. TABLE II. Addi
17、tional assembly dimensions (see figure 1). 1/ PIN length designator Dimension “length“ .02 (0.5 mm) Dimension “M“ .01 (0.3 mm) Dimension “M/2“ .02 (0.5 mm) 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.
18、Millimeters, in parenthesis, are given for general information only. Mounting. The mounting designators shall be as specified in AA59789. The mounting options 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
19、 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 requirements. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/18A 4 Rivet mounting hol
20、es. The holes used for rivet mounting shall be .068/.073 inch (1.73/1.85 mm) diameter, 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 hardware options. Card holders can have the follow
21、ing 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 the hardware option needed. Card holders requiri
22、ng no added hardware options shall include configuration identifier “C“ in the PIN (see classification and notes section herein). Screw self-locking element (see figure 3). The use of a screw self-locking element on the screw will provide a prevailing-torque for increased resistance to loosening of
23、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 and notes section herein). FIGURE 3. Screw self-l
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