1、MIL-C-8bO5B 15 7779906 0457482 T a- -0 - - - - MIL-C-8605B 31 October 1990 Superseding 3 1 October 1980 MIL-C-8605A - MILITARY SPECIFICATION CAP; PRESSURE FUEL SERVICING This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This spec
2、ification covers the requirements for procurement of caps for pressure. fuel servicing adapters. 1.2 Classification. Pressure fuel servicing caps shall be one of the following: MS29525 Cap - Pressure Fuel Servicing, 2 1/2 Inch Flush Type MS29526 Cap - Pressure Fuel Servicing, 2 1/2 Inch Non-Flush Ty
3、pe 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specification and standards form 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
4、 Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. SPECIFICATIONS Federal TI-E-489 T-r-s-735 Standard Test Fluids, Hydrocarbon Enamel, Alkyd, Gloss (For Exterior and Interior Surfaces) Military MIL-C-5541 MIL-T-5624 MIGC-7024 Chemical Conversio
5、n Coatings On Aluminum and Aluminum Alloy Turbine Fuel, Aviation Grades JP-4 and JP-5 Calibrating Fluid, Aircraft Fuel System Components Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Naval Air
6、 Systems Command, AIR-5363, Washington, DC 20361-5360, by using the Standardization Document Improvement Proposal (DD Form 14%) appearing at the end of this document or by letter. AMSC N/A FSC 1560 DISTRIBUTION STATEMENT A, Approved for public release; distribution is unlimited. Provided by IHSNot f
7、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-8605B MIL-C-Bh05B I5 M 99779Oh O457483 I MILS-7742 MIL-A-8625 MLF-18264 MLP-23377 MIGN-25027 MIL-R-25988 MIL-T-83 133 MIL-C-83286 STANDARDS Milita? DoD-STD-100 MIL-STD- 129 MIL-STD-130 MIGSTD-143 MIGSTD-595 MIL-STD-7
8、94 MIL-STD-889 MIL-STD-1523 MS20995 MS24484 MS29525 MS29526 MS33588 MS33666 Screw Thread, Standard, Aeronautical Anodic Coatings For Aluminum and Aluminum Alloys Finishes: Organic, Weapon System, Application and Control of Primer Coatings, Epoxy Polyamide, Chemical and Solvent Resistant Nut Self Loc
9、k Rubber, Fluorosilicone Elastomer, Oil- and Fuel-Resistant O-Rings Turbine Fuels, Aviation, Kerosene Types, NATO F-34, (JP-8) and Coating Urethane, Aliphatic Isocyanate For Aerospace Application NATO F-35 Engineering Drawing Practices Marking for Shipment and Storage Identification Marking for US M
10、ilitary Property Specifications and Standards, Order of Precedence for the Selection of Colors Parts and Equipment, Procedures for Packaging and packing of Dissimilar Metals Age Control of Age Sensitive EIastomeric Material Wire, Lock Adapter, Pressure Fuel Servicing Aircraft, Nominal 2 1/2 Inch Dia
11、meter Cap, Pressure Fuel Servicing, 2 1/2 Inch Flush Type Cap - Pressure Fuel Servicing, 2 1/2 Inch Non-flush Type Nuts and Plate Nuts, Self-locking, Functional Limitations of Packing, Preformed, Aeronautical, Elastomeric Range of sizes (Unless otherwise indicated, copies of federal and military spe
12、cifications, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg 4D, 700 Robins Avenue, Philadelphia, PA 19111-5094.) 2.3 Order of Precedence. In the event of a conflict between the text of this specification and the references cited herein (except for related
13、associated detail specifications, specification sheets or MS standards), the text of this specification takes precedence. Nothing in this specification, however, supersedes applicable laws and regulations unless a specific exemption has been obtained, 3. REQUIREMENTS 3.1 Oualification. The cap unit
14、furnished under this specification shall be a product which is qualified for listing on the applicable Qualified Products List at the time set for opening of bids (see 6.3). 3.2 Materials. Materials and processes used by the manufacturer of pressure fuel servicing caps shall be of high quality, suit
15、able for the purpose, and shall conform to 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-applicable Government specifications. Materials conforming to contractors specifications may be used provided the specifications are released by the Services
16、 and contain provisions for adequate tests. The use of contractors specifications will not constitute waiver of Government inspection, All materials used in the cap shall be sufficiently resistant to fuels conforming to MIL-T-5624, MILT-83133 and TI-S-735 with aromatic content from O to 30 percent,
17、to assure satisfactory operation as herein defined. 3.2.1 Metals. Metals used on the exterior of the cap shall be nonsparking, nonferrous. All metals not of corrosion resisting type shall be suitably protected to resist corrosion during the normal service life of the cap. (See Paragraph 3.7.2) The u
18、se of dissimilar metals, especially brass, copper or steel in contact with aluminum or aluminum alloys shall be avoided where practicable. Dissimilar metals are defined by MLSTD-889. 3.2.2 Selection of Materials. Specifications and standards for all materials, parts, and Government certification and
19、 approval of processes and equipment, which are not specifically designated herein and which are necessary for the execution of this specification, shall be selected in accordance with MILSTD-143, except as provided in the following paragraph. 3.2.2.1 Standard Parts. Standard parts (MS, AN, or JAN)
20、shall be used wherever they are suitable for the purpose, and shall be identified on the drawing by their part numbers. Commercial utility parts such as screws, bolts, nuts, cotter pins, etc., may be used provided they possess suitable properties and are replaceable by the standard parts without alt
21、eration, and provided the corresponding standard part numbers are referenced in the parts list and, if practicable, on the contractors drawings. In the event there is no suitable corresponding standard part in effect on date of invitation for bids, commercial parts may be used provided they conform
22、to all requirements of this specification. 0 3.3 Design and construction. 3.3.1 Design. The cap as shown on MS29525 or MS29526 shall be designed to close and seal aircraft pressure fuel servicing connections which use MS24484 adapters. The design shall be such that removal of the cap will not be hin
23、dered by negative pressures acting between the cap and the adapter. If necessary, automatic relief venting shall be provided. The design shall include a means of connecting and disconnecting the cap easily by one gloved hand without the use of tools. The cap shall incorporate a positive locking mech
24、anism. The outside surface of flush-type caps shall be flat as practicable in order to reduce air resistance. 3.3.1.1 Weight. Caps conforming to MS29525 shall weigh less than 0230 pounds. Caps conforming to MS29526 shall weigh less than 0.65 pounds. 3.3.2 Construction. The cap shall be so constructe
25、d that it will withstand the strains, jars, vibrations, and other conditions incident to shipping, storage, and service use. 3.3.2.1 Primary Seal. The cap to adapter face seal shall be readily replaceable with a minimum replacement of attaching parts. 3 Provided by IHSNot for ResaleNo reproduction o
26、r networking permitted without license from IHS-,-,-MIL-C-bO5B 15 999990b 0457485 5 3.3.2.2 Direction of Rotation. The cap rotation to engage and seal shall be in a clockwise direction. 3.3.2.3 Lubrication. The cap shall operate satisfactorily without the use of lubricant. 3.5.2 Locking of Threaded
27、Parts. All threaded parts shall be securely locked by safety wiring, self-locking nuts, cotter pins, or other approved means. Safety wire shall have a minimum diameter of 0.032 inch and shall conform to MS20995, Self-locking nuts shall be of the all-metal type conforming to MIL-N-25027, and shall be
28、 used in accordance with 3.3.2.4 Locking. The cap shall incorporate a rocker arm assembly as shown on MS29525 and MS29526 to positively and automatically lock the cap when fully engaged. The arm shall be spring loaded in a closed position. Once engaged, the cap shall not rotate, loosen, or unlock (e
29、ven in the event of the formation of negative pressures) until the arm is raised. 3.3.2.4.1 Locking Indicator. The design shall provide a visual indication that the cap has not been properly installed and rotated to the locked position. When properly installed the rocker arm will be flush with the c
30、ap surface. 3.3.2.4.2 Installation and Removal. The installation of the cap shall be accomplished by applying a force of not more than 25 lbs. in the direction of the caps axis and rotating it 3525 degrees in a clockwise direction. This allows the locking pin of the rocker arm to engage in one of th
31、e three locking slots of the MS24484 adapter. The torque required to install or remove the cap, (rocker arm in the up position), shall not exceed 75 in.-lbs. Removal of the cap shall be accomplished by pressing at the “Press to Unlock lettering sections of the rocker arm and rotating the cap counter
32、clockwise. The necessary force to unlock the lock pin shall not exceed 6 lbs. 3.4 Interchangeability. All component parts shall be governed by the part numbering system of DoD-STD-100. 3.5 Threaded parts. 3.5.1 Screw Threads. Screw threads shall be in accordance with MILS-7742. i 3.6 Synthetic Rubbe
33、r Parts. Elastomeric materials shall be selected for long term stowage (20 years). Age sensitive elastomers, as defined in MIL-STD-1523, shall not be used. 3.6.1 “O“ Rings. All “O“ rings shall conform to either MS33666 or MIL-R-25988. 3.7 Finishes and protective coatings. 3.7.1 Finishes. The cap fin
34、ish shall be smooth and free from sharp edges. Painted parts of non-flush caps shall be finished in accordance with MIL-F-18264 and finish coat shall be insignia red enamel conforming to Type II or Type III of lT-E-489. Surfaces exposed as an indication that the lock is not engaged shall be painted
35、yellow color No.13655 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-b05B 15 W 7977706 04571186 7 MIL-C-8605B in accordance with FED-STD-595. Paint to be used on flush caps shall consist of MIGP- 23377 Type II epoxy primer (.O006 to .O009 i
36、nch dry film thickness) topcoated with MIL-C- 83286 aliphatic polyurethane, FED-STD-595 color No. 35237 (top coat dry film thickness of 0.0010 to 0.0015 inch) after MIL-C-5541 surface treatment to obtain adequate paint adhesion. 3.7.2 Protective Coatings. The cap shall be adequately protected agains
37、t corrosion by the use of corrosion resistant materials or protective coatings acceptable to the procuring activity. Such coatings shall not chip or flake and shall prevent deterioration of the base metal under all conditions of service. Aluminum-alloy parts shall be anodized in accordance with MIL-
38、A-8625. 3.8 Performance. The cap shall satisfy the provisions of Section 4. 3.9 Identification. All assemblies and parts shall be marked in accordance with MIL STD-130. The marking shall be durable to prevent obliteration from use. The information may be etched, engraved, embossed, or stamped in a s
39、uitable location where practical. rn addition, to information detailed on MS29525 and MS29526, nameplate data is required. 3.9.1 Nameplate. The following information shall be marked on the top of the cap: CAP, PRESSURE FUEL SERVICING MS Number (either MS29.525 or MS29.526 as appropriate) Manufacture
40、rs Name or Trademark Manufacturers Part No. 4. QUALITY ASSURANCE PROVISIONS 4.1 ResDonsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier of the fuel is responsible for the performance of all inspection requirements (examinations and tests) as specifie
41、d herein. Except as otherwise specified in the contract or purchase order, the supplier of the fuel cap may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to per
42、form any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this
43、specification shall become a part of the fuel cap suppliers overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies submitted to the Government for a
44、cceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commi
45、t the Government to accept defective material. 4.2 Classification of Inspections. The inspection and testing of the component shall be classified as follows: 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-8bO5B 15 779790b 0457487 7 d.- MIL-C
46、-8605B (a) Oualification inspection: The qualification inspection consists of the examinations and tests accomplished on samples submitted for qualification (See 4.3). (b) Ouality conformance inspection: Quality conformance inspections are those examinations and tests accomplished on caps manufactur
47、ed and submitted for acceptance under contract (See 4.4). 4.3 Oualification Inspection. Qualification inspections shall consist of qualification tests on two caps by the supplier, and verification tests on two caps at a Government facility. The qualification test are outlined in 4.3.1.3. The verific
48、ation tests shall consist of any of the tests of 4.6 which the Government desires to perform. Successful completion of this inspection is required for qualification. 4.3.1 Test Samples. Test samples submitted for government verification shall be identified with the manufacturers own part number. Sam
49、ples submitted shall be accompanied by a complete set of detail and assembly drawings and a complete test report (4.3.1.1 and 4.3.1.2). Samples shall be submitted to the Naval Air Propulsion Center, Trenton, NJ 08628. 4.3.1.1 Drawings. The contractors drawings submitted with the verification test samples shall conform to DoD-STD-100. The drawings shall show a cutaway section of all parts in their normal assembled position and shall speci6 part numbers of a
