DLA A-A-59789 26-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 225 X 225 INCH BODY SIZE SCREW ACTUATED WITH CAPTIVE SCREW AND VISUAL LOCK INDICATI.pdf
《DLA A-A-59789 26-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 225 X 225 INCH BODY SIZE SCREW ACTUATED WITH CAPTIVE SCREW AND VISUAL LOCK INDICATI.pdf》由会员分享,可在线阅读,更多相关《DLA A-A-59789 26-2012 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 225 X 225 INCH BODY SIZE SCREW ACTUATED WITH CAPTIVE SCREW AND VISUAL LOCK INDICATI.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、INCHPOUND AA59789/26 26 March 2012 COMMERCIAL ITEM DESCRIPTION SPECIFICATION SHEET HOLDER, ELECTRICAL CARD, WEDGE RETAINERS, 5 PIECE, FOR COLD PLATE APPLICATIONS, .225 X .225 INCH BODY SIZE, SCREW ACTUATED, WITH CAPTIVE SCREW AND VISUAL LOCK INDICATION The General Services Administration has authori
2、zed 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 NUMBER (PIN). This commercial item d
3、escription (CID) specification sheet uses a classification system which is included in the PIN as shown in the following example (see notes herein). AA59789 CID number /26 Applicable CID sheet * Configuration (see table I) * Finish * * Length (see table II) * Mounting Example: AA59789/10LH50S is the
4、 PIN for a hard black anodize finished, 4.8 inch (121.9 mm) long card holder with visual lock indication. The card holder also features two tapped mounting holes for use with 256 UNC 2B fasteners and a screw selflocking element for added resistance to loosening. SALIENT CHARACTERISTICS. Performance.
5、 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. The card holders supplie
6、d to this CID specification sheet shall be as specified herein and meet the general requirements specified in CID AA59789. Card holders shall have a screw retention feature to prevent unintentional disassembly of the card holder. Card holders shall also have a visual indicator to show when the assem
7、bly is in its relaxed (unlocked) 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 “
8、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 .250 inch (6.35 mm) plus the thickness of the printed board of the circuit card assembly (see AA59789). Installation torque. The recommended no
9、minal 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 table I. The details of a particu
10、lar configuration consist of those on figures 1, 2 and 3, and may include those on figures 4 and 5. AMSC N/A FSC 5998 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/26 2 TABLE I. Configuration. Configuration Applicable figures Hardware optio
11、ns C 1, 2 and 3 No added options L 1, 2, 3 and 4 Screw self-locking element E 1, 2, 3 and 5 Additional mounting hole D 1, 2, 3, 4 and 5 Screw self-locking element and additional mounting hole Inches mm Inches mm Inches mm Inches mm Inches mm .225 5.71 .230 5.84 .290 7.37 .35 8.9 .80 20.3 NOTES: 1. D
12、imensions 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 fl
13、ats 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-,-,-AA59789/26 3 Captive screw (see figure 2). The captive screw feature prevents the unintentiona
14、l disassembly of screw from front wedge. FIGURE 2. Captive screw details. Visual lock indicator (see figure 3). Card holders shall have a visual indicator to show when the card holder is in its relaxed state (unlocked). When the card holder is in the relaxed state (unlocked), the end of the actuatin
15、g screw shall display a 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 state (locked), this red band shall be concealed. FIGURE 3. Visual lock indicator. TABLE II. Additional card holder dimensions (see figure
16、 1). 1/ PIN length designator Dimension “Length“ .02 (0.5) Dimension “M“ .01 (0.3) Dimension “M/2“ .02 (0.5) 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) 60 5.80 (147.3) 3.90 (99.1) 1.95 (49.5) 70 6.80 (172.7) 4.90 (124.5) 2.45 (6
17、2.2) 80 7.80 (198.1) 5.90 (149.9) 2.95 (74.9) 90 8.80 (223.5) 6.90 (175.3) 3.45 (87.6) 1/ Dimensions are in inches. Millimeters, in parenthesis, are given for information only. Finish. The finish designator shall be as specified in AA59789. The finishes available for this CID specification sheet are
18、 as follows: “B“ (black anodize), “E“ (electroless nickel), or “H“ (hard black anodize). 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 relax
19、ed dimensions shall be as specified on figure 1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/26 4 Mounting. The mounting designators shall be as specified in AA59789. The mounting options available for this CID specification sheet are as
20、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 figures 1 and 5 for mounting hole spacing requirements. Rivet mounting holes. The holes used for rive
21、t 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. Hardware options. Card holders can have the following hardware options: no hardware options
22、 added, screw self-lock element (see figure 4), additional mounting hole (see figure 5) or screw self lock element and additional mounting hole. See table I for the correct PIN configuration identifier for the hardware option needed. Screw self-locking element (see figure 4). The use of a screw self
23、-locking element will provide prevailing torque for resistance to loosening from shock vibration. Card holders requiring a screw self-locking element shall include configuration identifier “L“ in the PIN (see classification and table I). FIGURE 4. Screw self-locking element details. Additional mount
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