DLA A-A-59590 21 B-2013 HOLDER ELECTRICAL CARD WEDGE RETAINERS 3 PIECE SCREW ACTUATED DRIVE 500 X 450 INCH BODY SIZE.pdf
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1、INCHPOUND AA59590/21B 21 March 2013 SUPERSEDING AA59590/21A 11 September 2007 COMMERCIAL ITEM DESCRIPTION SPECIFICATION SHEET HOLDER, ELECTRICAL CARD, WEDGE RETAINERS, 3 PIECE, SCREW ACTUATED DRIVE, .500 X .450 INCH BODY SIZE The General Services Administration has authorized the use of this commerc
2、ial 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 AA59590. CLASSIFICATION/PART IDENTIFICATION NUMBER (PIN). This commercial item description (CID) specificat
3、ion sheet uses a classification system which is included in the Part Identification Number (PIN) as shown in the following example (see notes herein). AA59590 CID number /21 Applicable CID specification sheet * Finish * Mounting * * Length (see table I) * Configuration (see table II) Example: AA5959
4、0/21EV58D is the PIN for a nickel plated, 5.8 inches (147 mm) long card holder with a flat washer, lockwasher, and screw self-locking element. The card holder also features two tapped mounting holes for use with 2-56 UNC 2A fasteners. SALIENT CHARACTERISTICS. Performance. Card holders shall hold the
5、 circuit card assembly 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
6、 holders supplied to this CID specification sheet shall be as specified herein (see figures 1, 2, 3, and table I) and meet the general requirements of CID AA59590. Material. Unless otherwise specified herein, the card holder materials shall be as specified in AA59590. Actuating screw hex drive socke
7、t. The dimension for hex drive socket shall be .156 inch (3.96 mm) for mounting options “J“, “N“, “T“ and “V“. The dimension for hex drive socket shall be a metric dimension of 2.5 mm (.098 inch) across flats for mounting option “G“. Cold plate dimensions. The recommend cold plate slot width to acco
8、mmodate the circuit card assembly with attached card holder is .525 inch (13.3 mm) plus the thickness of the printed board of the circuit card assembly (see AA59590). AMSC N/A FSC 5998Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59590/21B 2 Inch
9、es mm Inches mm Inches mm Inches mm Inches mm .07 .13 1.8 3.3 .20 .23 5.1 5.8 .25 .260 6.4 6.6 .270 .325 6.86 8.26 .70 17.8 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
10、and .010 inch (0.25 mm) for three place decimals. 3. The tolerance for the mounting hole spacing is .005 inches (0.13 mm). 4. The across flats dimension for hex drive socket shall be .156 inch (3.96 mm) for mounting options “J“, “N“, “T“, and “V“. The across flats dimension for hex drive socket shal
11、l be a metric dimension of 2.5 mm (.098 inch) across flats for mounting option “G“. FIGURE 1. Relaxed and expanded dimensions, basic configuration. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59590/21B 3 Nominal installation torque. When card h
12、olders are used in cold plate applications, the nominal installation torque of each card holder shall be as follows: 31 inch-pounds (3.5 N-m) for assemblies using no options or option “W“ and from 34 to 36 inch-pounds (3.8 to 4.1 N-m) for assemblies using options “D“ or “E“. Finish. The finish desig
13、nator shall be as specified in AA59590. The finishes available for this CID specification sheet are as follows: “B“ (black anodize), “C“ (gold chemical film), “E“ (electroless nickel), “H“ (hard black anodize), or “R“ (clear chemical film). Mounting. The mounting designators shall be as specified in
14、 AA59590. Except when using mounting option “N“, two mounting holes are required on the card holders. The mounting options available for this CID specification sheet are as follows: “J“ (rivet mounting holes), “N“ (no mounting holes), “T“ (tapped 0-80 UNF 2B holes), “V“ (tapped 2-56 UNC 2B holes), o
15、r “G“ (tapped M2.5 x.45 metric holes). See figure 1 and table I for mounting hole spacing requirements. Card holders using mounting option “J“ may be shipped unassembled. Counterbore holes (for rivet mounting). The holes used for rivet mounting shall be .136 inch (3.45 mm) diameter, countersunk 100
16、degrees by .190/.200 inch (4.83/5.08 mm) diameter through holes with an access/clearance counterbore of .190/.200 inch (4.83/5.08 mm) diameter by .390 inch (9.91 mm) deep. Rivets. This card holder uses rivet type B as specified in AA59590 when rivet mounting is used. Length, expanded, and relaxed di
17、mensions. The length designator shall be as specified in AA59590 and the lengths available for this CID specification sheet are listed in table I. The length, expanded, and relaxed dimensions shall be as specified on figure 1. TABLE I. Assembly dimensions (see figure 1). 1/ PIN length designator Dim
18、ension “LENGTH“ .02 (0.5 mm) Dimension “B“ .03 (0.8 mm) Dimension “M“ .005 (0.13 mm) 28 2.8 (71 mm) 2.30 (58.4 mm) .90 (22.9 mm) 38 3.8 (97 mm) 3.30 (83.8 mm) 1.90 (48.3 mm) 48 4.8 (122 mm) 4.30 (109.2 mm) 2.90 (73.7 mm) 58 5.8 (147 mm) 5.30 (134.6 mm) 3.90 (99.1 mm) 1/ Dimensions are in inches. Mil
19、limeters, in parenthesis, are given for general information only. Configuration. The configuration of a card holder shall be as specified in table II. The details of a particular configuration consist of those on figure 1 and may include those on figures 2 and 3. The correct PIN configuration identi
20、fier for each option is listed in table II. Card holders not requiring the options described by table II shall leave the configuration position in the PIN blank. TABLE II. Configuration. Configuration Applicable figures Hardware added to basic configuration 1 No changes from basic configuration W 1
21、and 2 Lockwasher and flat washer E 1 and 3 Screw self-locking element D 1, 2, and 3 Lockwasher, flat washer, and screw self-locking element Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AA59590/21B 4 Lockwasher and flat washer (see figure 2). The u
22、se of a lockwasher and flat washer located under the screw head will provide for additional resistance to loosening of the card holder assembly from shock and vibration. Card holders requiring a lockwasher and flat washer shall include a suffix “W“ in the PIN (see classification and notes). FIGURE 2
23、. Lockwasher and flat washer details. 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 the card holder assembly from shock and vibration. The screw self-locking element shall be a
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