1、9999Ob 2336423 7bb m INCH-POUND MIL-DTL-44285A 9 March, 2000 SUPERSEDING 24 June 1987 . MIL-D-44285 DETAILED SPECIFICAION DOORS, DOUBLE BUMP THROUGH This specification is approved for use by all Departments and Agencies of the Departmerit of Defense. 1. SCOPE 1.1 Scope. This specification covers two
2、 classes of double bump through door assemblies to be used on Temper tents and tactical rigid 7alled shelters (see 6.1). 1.2 Classification. The double bump through doors shall be of the following classes, as specified (see 6.2). Class A - No. 383 Green Finish Class B -NO. 33303 Sand Finish 2. APPLI
3、CABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made
4、to ensure the completeness of this list, document users are cautioned that they must meet ail specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. Beneficial comments (recommendations, additions, deletions, claiif
5、ications) and any pertinent data which may be of use in improving this document should be addressed to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, Attn: DSCP-CNR, 700 Robbins Ave., Philadelphia, PA 1911 1-5096 by using the Standardization Document Improvement Proposal (DD
6、 Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 8340 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-9999906 2LLb424 bT2 = MIL-DTL-44285A “2.2.1 Specifications, standards. and handbooks. The following specifications, stan
7、dards, and liandbooks foim a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (se
8、e 6.2). SPECIFICATIONS MILITARY MIL-C-5 54 1 MIL-T-44243 MIL-A-81236 - Chemical Conversion Coatings On Aluminum Alloys - Tent Sections, Tent, Extendable Modular, Personnel - Adhesive, Epoxy Resin With Polyamide Curing Agent STANDARDS FEDERAL FED-STD-595 - Colors MILITMY * .hlIL-STD-130 - Identificat
9、ion Marking of U.S. Military Property (Uiiless otherwise indicated. copies of federal and military specifications, standards, and handbooks are available Corn the Document Automation and Production Service, Bldg. 4D (DPM-DODSSP), 700 Robbins Avenue, Philadelphia. PA 191 1 1-5094.) Government documen
10、ts, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. *2.2.2 Other Government documents, drawinrrs, and publicEtions. The following other DRAWINGS T7.S. ARiW BIOLOGICAL CHEMICAL COMMAND
11、5 -4-3 983 5-4-4081 5-4-4123 - Door, Panel Assembly - Vestibule Door Cap - Doors, Double Bump through Assembly (Copies of drawings are available from the U. S. Army Biological Chemical Command, AT“: AMSSB-REO-S(N), NATICK, MA 01760-5017.) *2.3 Order of precedence. In the event ofa conflict between t
12、he text of this specification &d the references cited herein, the tex- of this specification takes precedence. Nothing in tliis specification, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 2 Provided by IHSNot for ResaleNo reproduc
13、tion or networking permitted without license from IHS-,-,-MIL-DTL-44285A 3.1 First article. When specified (see 6.2), a sample shall be subjected to rst article inspection (see 4.2 and 6.2). 3.2 Materials and comtionents. The materials and components shall be as specified herein and as shown on the
14、applicable drawings. Materials and components not definitely specified shall be of the quality normally used by the manufacturer provided the completed item complies with all the provisions of this document. Green Shade 383. The color of the Class B double bump through doors shall conform to Shade S
15、and 33303 of FED-STD-595 (see 1.2). *3.3 Color. The color of the Class A double bump through doors shal conform to Army 3.4 Alternate comtionents. Components offered as equivalent to components specified in this document and on the reference drawings as a specific manufacturers part number or equal
16、shall be functionally equal to the manufacturers part number identified *and of equal or better quality. The incorporation and inclusion of such a component in the design of the specified end product shall not require modification or change to any other specified componeiit, and shall not reduce eas
17、e of maintenance to it or any other components, unless such modification or cliange is specifically approved by the contracting officer. Prior to manuhcture of the first article or if none is required, prior to commencing production, the contractor shall submit for the contracting officers approval,
18、 a list identifjing each proposed alternate component, together with proof that each listed component complies with requirements specified herein. At the option of the contracting officer, a physical sample of the proposed substitution may be required. Approval of the submitted listhg, together with
19、 necessary supporting data authorizes the commencement of the first article or production manufacture, as applicable and does not relieve the contractor of the responsibility that these components perfomi in accordance with specified requirements when incorporated into the end product. 3.5 Design an
20、d construction. The design and construction of the bump through doors shall be as specified herein and as shown on the drawings referenced in 2.1.2. 3.5.1 Honeycomb door panels. The inner and outer skins on all joints of each door panel shall be sealed to provide a water barrier against the entrance
21、 of moisture to the core material. The water barrier shall be maintained intact at all panel cross-sectional openings. Ail joints, edges and mitered comers shall be assembled and sealed in a manner to prevent collection and retention of moisture. The door panels shall be hbricated in accordance with
22、 the following requirements: b5L-C-5541. Areas of touchup may be sprayed. a. AU aluminum surfaces shall be hiersion coated in accordance with class 1A of b. Apply adhesive specified in MIL-A-81236 in a quantity of 1 gallon per 200 square feet of surface area to be bonded. c. Cover epoxy surfaces wit
23、h scrim cloth as specified on Drawing 5-4-4123. d. Insert reinforcing blocks as shown on drawing 5-4-4 123. e. Position honeycomb core material between aluniinum skins and apply a constant pressure of 10 to 12 psi over the entire surface area for a minimum of 24 hours at a mlliimum Temperature of 70
24、F. . Trim excess honeycomb and insert aluminum exqrusions as shown on Drawings 5-4-4101 and 5-4-4102. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-9999906 2116426 475 MIL-DTL-44285A 3.5.1.1 Panel delamination. Door panels shall show no signs of
25、delamination when tested 3.6 Workmanshiu. as specified in 4.4.4. product established by this document and the occurrence of defects shall not exceed the applicable acceptable quality levels. Cloth components shall be clean and free of boles, cuts, and tears. All linges and latches shall be properly
26、adjusted for smooth door operation befors the door assembly is prepared for delivery to the government. The double bump through doors shall conform to the qua!ity of 3.6.1 Riveting. Riveted joints shall be tight. The joined parts shall be undamaged and the rivet heads shall be properly seated and ti
27、ght agaiiist the bearing surfxes. All exterior surface rivets shali be weather sealed. 3.6.2 Cleaniug. Mer fabrication, parts shall be cleaned in accordance with the drawings. 3.6.3 Welding. Welded joints shall be such that grinding of the finished weld shall not be a requirement, except when specif
28、ied on the drawing. Spot stitch and seam welds shall be as indicated on the drawings. All surfaces to k welded shall be cleaned in accordance with good comniercial practice and shall be free from scale, paint, grease aid other foreign materials. Welds shd have thorough penetration, good fusion and s
29、hall be free from scabs, blisters, abnormal pock marks, cracks, voids, slag inclusions and other harmful defects. Welded assemblies shall be cleaned to remove any scale, oxidation products and excess flux. Any acid used in cleaning shall be completely neutralized and removed. 3.6.4 Finish. Coatings
30、shall level out to an adherent. continuous and dorm fi without m, wrinkles, steaks or areas of no film. Any coating damaged during assembly or examina tion shall be touched up. There shall be no areas of rust. Finish shall be fire of blistering, peeling and chips. *3.7 Marking. 3.7.1 Identification.
31、 The inside face of one vertical door fi-ame member (item 2 of drawing No. 5-4-4082) sliall be permanently and distinctly stamped or marked for identification. The letters “U.S.“ shall be one-inch characters in height. The name of the manufacturer or brand name or mark of such known character as to
32、make the source of manufacture detemirhble, and the number and year of contract shall be in characters a nlinimum of one half inch in height. Identification markings shall conform to MIL-STD- 130. “3.8 Recvcled. recovered. or environmentally ureferable materials. Recycled, recovered, or environmenta
33、liy preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 4. VERIFICATION 4.1 Responsibility for dimensional requirements. Unless otherwise
34、specified in the contract or purchase order, the contractor is responsible for assuring that all specified dimensions have been met. When dimensions cannot be examined on the end item, inspection shall be made at any point, or at all points in the manufacturing process necessary to assure compliance
35、 with all dimensional requirements. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-44285A 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. b. Conformance inspection (see 4.3). Fi
36、rst article inspection (see 4.2). 4.3 First article insuection. When a first article is required (see 6.2) it shall be examined for the defects listed in 4.4.2 and tested as specified in 4.4.4. The presence of any defect or failure of any test shali be cause for rejection of the first article. 4.4 C
37、onformance inspection. Sampling for inspection shall be a specified in the contract or purchase order. 4.4.1 Component and material inspection. In accordance with 4.1, components and materials shall be inspected in accordance with all the requirements of referenced documents unless otherwise exclude
38、d, amended, modified or qualified in this specification or applicable purchase document. Table I. The lot size shall be expressed in units of doors with fiames. The sample unit shall be one door and fiame assembly. The inspection level shall be II. 4.4.2 End item visual examination. The end item sha
39、ll be examined for the defects listed in TABLE 1. Defects Classification Examine Defect Maior Minor Finish Area of no coating 101 Color not as specified 1 o2 Exposed surface due to scratch, buff, dig Run, sag, blistering, cracking, flaking Dust, dirt, spot or stain that cannot Painted or coated surf
40、ace not uniform Powdery areas (anodizing) Excessive contact marks (anodizing) Contact marks not in areas of mUiimiun exposure (anodizing when specified) or abrasion or peeling be removed in appearance 20 1 202 203 204 205 206 207 Design, Not type, class, style, etc. specified construction Any compon
41、ent missing & work- Any component that does :lot function. manship malfunctions or is misplaced to the applicable to degree that it does not serve its intended ail components purpose, unless otherwise classified herein I05 & assemblies Not fabricated as specified by the specification or drawing 106
42、Not clean (evidence of oil, grease or dirt) 208 Sharp edge or burr 209 Puncture, fiacture or malformed 107 1 o3 1 o4 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-44285A TABLE I. Defects (continuedJ - Classification Examine ,Defect Maior
43、M& drawing requirements 1 os of any foreign matter 210 a. On brass or aluminum components Design detail deviating fiom specification or Evidence of scale, rust, discoloration or deposit Finish omitted or not as specified: 21 1 212 b. On steel components 1 O9 Area of partial or no finish Welding Unde
44、rcut Underfill Overlap Incomplete fusion where visible) Slag. flux, splatter Arc strike Burn through insufficient penetration (where visible) Surface cracking Surface porosity Unfilled craters Misalignment of welded parts Distortion of base metal Poorly formed beads Underwelded or overwelded Rivetin
45、g Melting sufaces of riveted components not Rivet head not in contact with its mating surface Rivet loose - not properly set Roll ofa rivet contains more than one split Portion of a rivet is set or rolled on itself in lieu ofbeing set or rolled on the mating surface of component drawn up tightly 213
46、 214 215 21 6 217 218 219 220 22 1 222 223 224 225 226 227 228 229 230 23 1 232 4.4.3 End item dimensioilal examinatiori. The end item shall be examined for conformance to dimensions specified with an asterisk on the drawiig. Any dimensions not within the specied tolerance shall be classified as a d
47、efect. The lot shail be expressed in units or doors with wiies. The sample unit shall be one door and fiame assenibly. The inspection level shall be I. 4.4.4 End item delamination testing. The doors with fiames shall be tested as specified in 4.5.1. The lot shall be expressed in units or doors with
48、fiames. The sample unit shall be one door and fiame assembly. The inspection level shall be S-2. Any test failure shall be cause for rejection of the lot. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*4.4.5 Packaping examination. The fully packa
49、ged end item shall be examined for marking, materials, workmanship and content defects. 4.5 Methods of insDection. 4.5.1 Delamination test. The interior and exqerior of the lefi and right door panel surfces shaU be tested by tapping them with the edge of a coin or material of like hardness. Each surfce shall be tapped in at least ten (1 O) places (excluding windows, door and window extrusions, hinge covers and areas of the door within 1-inch of these exc
