DLA A-A-59789 8 A-2011 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 195 X 250 INCH BODY SIZE SCREW ACTUATED WITH VISUAL LOCK INDICATION.pdf
《DLA A-A-59789 8 A-2011 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 195 X 250 INCH BODY SIZE SCREW ACTUATED WITH VISUAL LOCK INDICATION.pdf》由会员分享,可在线阅读,更多相关《DLA A-A-59789 8 A-2011 HOLDER ELECTRICAL CARD WEDGE RETAINERS 5 PIECE FOR COLD PLATE APPLICATIONS 195 X 250 INCH BODY SIZE SCREW ACTUATED WITH VISUAL LOCK INDICATION.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、INCH-POUND AA59789/8A 8 November 2011 SUPERSEDING AA59789/8 October 25, 2006 COMMERCIAL ITEM DESCRIPTION SPECIFICATION SHEET HOLDER, ELECTRICAL CARD, WEDGE RETAINERS, 5 PIECE, FOR COLD PLATE APPLICATIONS, .195 X .250 INCH BODY SIZE, SCREW ACTUATED, WITH VISUAL LOCK INDICATION The General Services Ad
2、ministration 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 NUMBER (PIN)
3、. 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 /08 Applicable CID sheet * Configuration (see table I) * Finish (see table I) * * Length (see table II) * Mounting
4、(see table I) Example: AA59789/08LH50S is the 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 loo
5、sening. SALIENT CHARACTERISTICS. Performance. Card holders shall hold the circuit card firmly in place and prevent loosening or movement as a result from shock and vibration while providing a thermal transfer path from the circuit card assembly to the cold plate. Interface and physical dimensions. T
6、he 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 (unlocked) and expanded (locked) state. Material. Unless otherwise
7、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 “U“. Cold plate slot width. The recommend cold plate slot width to
8、 accommodate the circuit card assembly with attached card holder is .220 inch (5.59 mm) plus the thickness of the printed board of the circuit card assembly (see AA59789). Installation torque. The recommended nominal installation torque is follows: 6 inch-pounds (0.7 N-m) for card holders of configu
9、ration “C“ or “E“ and 7 to 8 inch-pounds (0.8 to 0.9 N-m) for assemblies of configurations “L“ or “D“. AMSC N/A FSC 5998 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/8A 2 Configuration. The configuration of a card holder shall be as specif
10、ied in table I. The details of a particular configuration consist of those on figure 1 and 2, and may include those on figures 3 and 4. TABLE I. Configuration. Configuration Applicable figures Hardware options C 1 and 2 No added options L 1, 2, and 3 Screw self-locking element E 1, 2, and 4 Addition
11、al mounting hole D 1, 2, 3, and 4 Screw self-locking element and additional mounting hole Inches mm Inches mm Inches mm Inches mm .197 5.00 .236 5.99 .250 6.35 .80 20.32 NOTES: 1. Dimensions are in inches. Millimeter equivalents are given for general information only. 2. Unless otherwise specified,
12、tolerances are for .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 (0.51 mm). 4. The across flats dimension for hex drive socket shall be .094 inch (2.38 mm). FIGURE 1. Relaxed and expanded dimensions. Provide
13、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/8A 3 Finish. The 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 bla
14、ck 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 specification sheet are listed in table II. The length, expanded, and relaxed dimensions shall be as specified on figure 1
15、. 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 unlocked (relaxed) state, the end of the actuating screw shall display a red band on the side of the screw. When the actu
16、ating screw on the card holder has been tightened (assembly expanded) so that the assembly is in the locked position, this red band shall be concealed. FIGURE 2. Visual lock indicator. TABLE II. Additional card holder dimensions (see figure 1). 1/ PIN length designator Dimension “Length“ .02 (0.5) D
17、imension “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) 1/ Dimensions are in inches. Millimeters, in parenthesis, are given for information only. Mounting. The mounting designators shall be as
18、 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 countersink), “S“ (tapped 2-56 holes), “T“ (tapped 0-80 holes), or “U“ (tapped metric M2 x 0.4 holes). See figure
19、1 for mounting hole spacing requirements. Rivet mounting holes. 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. Hard
20、ware options. Card holders can have the following hardware options: No hardware options added (see figures 1 and 2), screw self lock element (see figure 3), additional mounting hole (see figure 4), or screw self lock element and additional mounting hole (see figures 3 and 4). See table I for the cor
21、rect PIN configuration identifier. No hardware options added. The base configuration of the card holder is as depicted by figures 1 and 2. Card holders not requiring any added hardware options shall include configuration identifier “C“ in the PIN (see classification, notes, and table I). Provided by
22、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59789/8A 4 Screw self-locking element (see figure 3). The use of a screw self-locking element will provide prevailing torque for resistance to loosening from shock vibration. The screw self-locking element shall
23、 be as specified in AA59789. Card holders requiring a screw self-locking element shall include configuration identifier “L“ in the PIN (see classification, notes, and table I). FIGURE 3. Screw self-locking element details. Additional mounting hole (see figure 4). Card holders requiring an additional
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