1、METRIC MIL-DTL-38999/28G 30 May 2008 SUPERSEDING MIL-DTL-38999/28F 11 June 2001 DETAIL SPECIFICATION SHEET CONNECTORS, ELECTRICAL, CIRCULAR, NUT, HEXAGON, CONNECTOR MOUNTING, SERIES III AND IV, METRIC This specification is approved for use by all Departments and Agencies of the Department of Defense
2、 The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-38999. FIGURE 1. Nut, hexagon. AMSC N/A FSC 5935 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-38999/28G 2 Shell size Dash nu
3、mber Series III and MIL-DTL-38999/43 of series IV Series IV MIL-DTL-38999/44 only A Thread size P Hex X + .29 - .00 X + .45 - .00 1 9 - M17X1 6H (see note 3) 24.00 21.82 4.54 3.17 2 11 - M20X1 6H (see note 4) 27.00 24.99 4.54 3.17 3 13 11 M25X1 6H 32.00 29.77 4.54 3.17 4 15 13 M28X1 6H 36.00 32.91 4
4、.54 3.17 5 - 15 M31X1 6H 41.00 39.26 4.54 3.17 6 17 - M32X1 6H 37.00 36.12 4.54 3.17 7 - 17 M34X1 6H 41.00 39.25 4.54 3.17 8 19 - M35X1 6H 41.00 39.25 4.54 3.17 9 21 19 M38X1 6H 46.00 42.47 4.54 3.17 10 23 21 M41X1 6H 50.00 45.61 4.54 3.17 11 25 23 M44X1 6H 51.23 49.25 4.54 3.17 12 - 25 M47X1 6H 55.
5、00 53.54 4.54 3.17 NOTES: 1. Dimensions are in millimeters. 2. Remove all burrs and sharp edges. 3. Modified minor diameter: 16.04 16.15. 4. Modified minor diameter: 19.07 19.15. FIGURE 1. Nut, hexagon Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
6、om IHS-,-,-MIL-DTL-38999/28G 3 REQUIREMENTS: Dimensions and configurations: See figure 1. Material: See table I. Finish: See table I and MIL-DTL-38999. TABLE I. Material and finish. 1/ 2/ PIN code finish number Material Finish Applicable class of connectorsC Aluminum alloy Anodic (nonconductive) C F
7、 Aluminum alloy Electroless nickel coating (conductive) F, G, R W Aluminum alloy Olive-drab cadmium plate over a suitable underplate (conductive) W X Aluminum alloy Same as W, but higher corrosion requirement X P Aluminum alloy Pure electrodeposited aluminum, non-reflective (conductive) P T Aluminum
8、 alloy Nickel fluorocarbon polymer, non-reflective (conductive) T Z Aluminum alloy Zinc nickel, non-reflective (conductive) Z K Corrosion resistant steel Passivated (conductive) K, H, Y N Corrosion resistant steel Electrodeposited nickel plating (conductive) N, S, L J Resin with or without filler Ol
9、ive-drab cadmium plate over a suitable underplate (conductive) J M Resin with or without filler Electroless nickel coating, (conductive) M V Resin with or without filler Unplated (no finish) J, M 1/ See MIL-DTL-38999. 2/ Shall be cleaned, descaled and passivated in accordance with SAE-AMS2700. Matin
10、g connectors: MIL-DTL-38999, series III and IV. Safety wire hole pull out: Safety wire holes shall not pull out when safety wire NI-CU alloy (MONEL) (UNS NO4400) or NI-CR alloy (INCONEL) (UNS NO6600) 0.51 mm diameter in accordance with NASM20995 is threaded through a hole and a pull of 133.5 Newton
11、minimum is applied. Three pulls shall be made, one parallel with axis of nut in each direction and one perpendicular to axis of nut. Qualifications. Qualifications shall be in accordance with MIL-DTL-38999 except only the following tests shall be required: Examination of product. Safety wire hole pu
12、ll out (see requirements). Salt spray (corrosion). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-38999/28G 4 Group A sampling inspection. Sampling for group A inspection shall be specified in table II. TABLE II. Group A sampling plan. Lot s
13、ize Sampling size 1 to 13 100 percent 14 to 150 13 units 151 to 280 20 units 281 to 500 29 units 501 to 1,200 34 units 1,201 to 3,200 42 units 3,201 and up 54 units Part or Identifying Number (PIN) example: D38999 /28 -11 F MIL number prefix Specification sheet number Dash number (figure 1) Finish n
14、umber (table I) Use code “V” for unplated nut NOTE: The term PIN is equivalent to the term (part number, identification number, and type designator) which was previously referenced in this specification. Changes from previous issue. Marginal notations are not used in this revision to identify change
15、s with respect to the previous issue, due to the extent of the changes. Referenced documents. In addition to MIL-DTL-38999, this document references the following: MIL-DTL-38999/43 MIL-DTL-38999/44 NASM20995 SAE-AMS2700 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
16、ense from IHS-,-,-MIL-DTL-38999/28G 5 CONCLUDING MATERIAL Custodians: Preparing activity: Army CR DLA - CC Navy - AS Air Force - 85DLA CC (Project 5935-2007-137) Review activities: Army - AR, MI Navy - EC, MC, SH Air Force - 19, 99 NOTE: The activities listed above were interested in this document a
17、s of the date of this document. Since organizations and responsibilities can change. You should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
