1、METRIC MIL-L-24478C(SH) SUPERSEDING MIL-L-24478B(SH) 26 August 1981 12 December 1990 MILITARY SPECIFICATION LUBRICANT, MOLYBDENUM DISULFIDE IN ISOPROPANOL This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and
2、Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers requirements for a lubricant consisting of molybdenum disulfide and. isopropanol, intended for use with metal parts having limited clearances and in applications where control of impurities is required. * 2. APPLICA
3、BLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of D
4、efense Index of Specifications and Standards (DODISS) and supplement thereto cited in the solicitation. SPECIFICATIONS FEDERAL TT-1-735 - Isopropyl Alcohol. PPP-P-1892 - Paint, Varnish, Lacquer, and Related Materials, Packaging, Packing, and Marking of. Beneflclal comments (recommendations, addition
5、s, deletions) and % any pertinent data which may be of use in improving this document should be addressed: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the Standardization Document Improvement Proposal (DD Form 11426) appearing the end of
6、 this document or by letter. L AMSC N/A FSC 9150 DISTRIBUTION STATEMENT A: Approved for public release; distribution unlimited Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILITARY MIL-“7866 - Molybdenum Disulfide, Technical, Lubrication Grade. MI
7、L-1-45208 - Inspection System Requirements (Unless otherwise specified, copies of federal and military specifications, standards and handbooks are available from the Standardization Document Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094). 2.2 Order of precedence: In the ev
8、ent of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.It 3. REQUIREMENTS 3.1 General reauirements. 3.
9、1.1 Materials. The lubricant shall consist of molybdenum disulfide in conformance with the requirements of MIL-“7866 and isopropyl alcohol in conformance with the requirements of grades A or B of TT-1-735. * 3.1.2 Containers. The containers and caps for the lubricant shall be either nonhalogenated p
10、lastic or seamless uncoated tinned metal and shall be unaffected by their contents. The containers shall be leaktight and unbreakable. The container materials in contact with the mixed lubricant shall be sufficiently inert, corrosion resistant, and sufficiently free of contaminants that the contents
11、 will be unaffected. 3.1.3 Markins and labelinq. The legend on each container may be printed or be on an affixed label. The legend shall be capable of being cleaned of smeared lubricant using acetone, denatured alcohol, isopropanol, or trichlorotrifluoroethane. It shall be of such quantity that it w
12、ill withstand normal handling, use, and cleaning without obliteration or loss. * 3.2 Premixed lubricant. This material shall be provided as a mixture of the two ingredients in a container ready for use. 3.2.1 The lubricant shall consist of 135 grams (9) of molybdenum disulfide and 90 milliliters (mL
13、) of isopropanol. The net weight shall be 205 & 5 g. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a 3.2.2 Fillins and mixinq. Ingredients for the premixed lubricant shall be individually filled into each container and then vigorously mixed to pr
14、oduce a homogeneous mixture. The containers shall be allowed to stand for at least 24 hours after which the lubricant shall be vigorously mixed again prior to final packaging and shipping. 3.2.3 Container. Lubricyt containers shall have a capacity of 250 cubic centimeters (cm ) or eight fluid ounces
15、 and shall be of the Itwide-mouth type“ with a screw cap and integral brush applicator. The applicator shall be a bristle brush 5/16-3/8 $rich wide and.5/8-3/4 inch long, attached to a stem and firmly fixed to the screw cap and extending to within 1/4 inch of the bottom of the container. The stem ma
16、terial shall meet the requirements as specified in 3.1.2. Materials or alloys containing lead shall not be used in the assembly of the applicator or cap assembly. 3.2.4 Leclend. The legend on the containers (see 3.2.3) shall be in black letters against a light blue background and shall include the f
17、ollowing: 3.2.4.1 Identification. WARNING - FLAMMABLE Lubricant MOLYBDENUM DISULFIDE IN ISOPROPANOL (MIL-L-24478) National Stock No. KEEP CONTAINER CLOSED WHEN NOT IN USE. MIX THOROUGHLY JUST PRIOR TO EACH USE. Date Manufactured Batch Nos.: Molybdenum Disulfide Isopropanol Lot No. Net Weight (Vendor
18、 Name and Address) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* 3.2.4.2 Instructions INSTRUCTIONS/PRECAUTIONS 1. 2. 3. 4. Prevent contamination of surrounding surfaces and weld preparation areas. Shield or mask as required. For each applicatio
19、n, shake container vigorously for about one minute and then apply lubricant. When dry, rub lightly with a cloth or soft bristle brush until surface is covered with a smooth, gray-black film. After usage of lubricant and installation of fastener, inspect the surrounding areas of contamination. Remove
20、 lubricant found as follows: (a) Clean the area with acetone, denatured alcohol, or isopropanol, and wipe dry. mechanically clean the surface by brushing with a clean, corrosion- resistant steel brush. is performed. (b) Visually inspect and, if necessary, (c) Repeat step (a) if mechanical cleaning 3
21、.2.4.3 Lettering shall be clearly legible and proportional to the available space of the container. The words IIMolybdenum Disulfide in Isopropanol,“ “Keep Container Closed When Not in Use8t, “Mix Thoroughly Just Prior to Each Use“, and l1Instructions/ Precautions“ shall be in letters smaller than t
22、hose in “WARNING - FLAMMABLE“ and larger than the other letters. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibilitv for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except
23、 as otherwise specified in the contract or order, the supplier 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 perform any of the inspections set forth in
24、the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. ll4.1.1 Responsibilitv for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth 4 Provided by IHSNot for ResaleNo reproduction
25、or networking permitted without license from IHS-,-,-in this specification shall become a part of the contractorts inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all product
26、s or supplies submitted to the Government for acceptance 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
27、, either indicated or actual, nor does it commit the Government to accept defective material. It 4.1.2 Inspection svstem. The supplier shall provide and maintain an inspection system acceptable to the Government for supplies and services covered by this specification. The inspection system shall be
28、in accordance with MIL-1-45208. 4.1.3 Certification of aualitv conformance. A certification of quality conformance shall be furnished to the procuring agency or Command with each lot of material offered for acceptance. The certification shall include actual results of specified tests, general inform
29、ation for identification of the samples and ingredients, and certification that the batches of ingredients used conform to specification requirements. 4.1.3.1 The minimum certification data required shall be as listed in figure 1, the Certificate of Quality Conformance, and may be submitted in the f
30、ormat as shown in figure 1. 4.2 pualitv conformance. 4.2.1 Definitions 4.2.1.1 Batch. A batch of ingredient shall consist of a quantity of material produced at one time for use in the final product and identified by a designation characteristic of the one batch. * 4.2.1.2 u. A lot of finished produc
31、t shall consist of all containers of premixed lubricant manufactured using the same combination of batches of ingredients and shall be identifiedby a designation characteristic of the one lot. Lots of lubricant manufactured from the same combination of batches of ingredients shall be assigned differ
32、ent designations. 4.2.1.3 Samples. Samples taken shall be from the final product in the marked approved containers as specified in 3.2.3. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.2.2 Quality conformance inspection. * 4.2.2,l Sample size. T
33、wo containers from each lot of premixed lubricant shall be selected at random and inspected as specified in 4.2.2.1.1 through 4.2.2.1.5. 4.2.2.1.1. Container content and leakaqe. The containers shall meet the requirements for weight as specified in 3.2.1, using an identical unfilled container as a t
34、are weight, and the requirements of PPP-P-1892 for IlLeakageIl. 4.2.2.1.2 Insredient verification. The two ingredients shall be verified to meet the requirements as specified in 3.1.1 by ensuring certifications for the batches of ingredient are provided and by examining records kept in accordance wi
35、th MIL-1-45208. 4,2.2.1.3 Odor. The odor of the contents of the containers shall be characteristic of isopropanol. No odor of halogenated solvents shall be detected. This shall be performed by a technician with normal olfactory acuity. 4.2.2.1.4 Inqredient proDortion verification. The total solids (
36、nonvolatile) of samples taken from each container shall be determined using the following procedure and shall meet the acceptance criteria specified. A. Procedure. 1. Shake the container vigorously for about one minute and then immediately pour about 10 mL of lubricant very rapidly into a weighed 30
37、-mL weighing bottle. 2. Weigh the weighing bottle and sample to the nearest milligram (mg) and determine weight of sample. (If necessary a suitable piece of stout wire may be weighed with the weighing bottle and used as a stirrer to break up any film formed during evaporation of the volatile materia
38、ls.) minimize fire hazard prior to placing weighing bottle in the oven). 3. Allow most of the solvent to evaporate (to 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4. Heat the weighing bottle and contents in a well- ventilateg convection type ov
39、en maintained at about 230 F for at least three hours. (At intervals, any films that have formed should be broken up with the stirrer.) 5. ,Cool in desiccator and weigh bottle, sample, and wire stirrer. Determine weight of residue to the nearest mg. using the following expression: 6. Calculate the p
40、ercent by weight of total solids Total solids - (weight percent) g of sample a of residue x B. AcceDtance criteria. The total solids (nonvolatile) content shall be 63-69 weight percent. 4.2.2.1.5. Lesend verification. The legend on the containers shall be verified to meet the requirements as specifi
41、ed in 3.2.4. 5. PREPARATION FOR DELIVERY 5.1. Subcontracted materials. The preparation for delivery requirements of referenced specifications do not apply to materials packaged in accordance with the requirements of this specification. 5.2 Packasins, packins. and markinq. The lubricant shall be pack
42、aged, packed, and marked for delivery in accordance with level C of PPP-P-1892, unless otherwise specified (see 6.2). 6. NOTES 6.1 Intended use. This lubricant is intended for use on threaded fasteners and other antiseize applications of closely fitted parts. 6.1.1 Prohibitions and precautions. 6.1.
43、1.1 Nolybdenum disulfide shall not be applied on 300 series or type 17-4 stainless steel component surfaces. 6.1.1.2 Areas to be welded must be protected from contamination with this lubricant. The following precautions shall be taken: (a) Where practical, application and burnishing of lubricant sha
44、ll be accomplished in areas away from where welding is being performed. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(b) Where necessary, protect weld preparation areas by masking. 6.1.1.3 Lubricant material to this revision of MIL-L-24478 is in
45、terchangeable with material to previous revisions. 6.2 Orderins data. Procurement document should specify the allowing: (a) Title, number, and date of this specification. (b) Packaging and packing levels, if other than level C (see 5.2). (c) Issue of DODISS to be cited in the solicitation, and if re
46、quired, the specific issue of individual documents referenced (see 2.1). 6.3 Certification of aualitv conformance format (see 4.1.3). The minimum certification data required is shown on figure 1. 6.4 Changes from previous issue. The margins of this specification are marked with an asterisk to indica
47、te where changes (additions, modifications, corrections, deletions) from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever or any inaccuracies in these notations. Bidders and contractorsare cautioned to evaluate the requirements of t
48、his document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Preparing Activity: (Project 9150-N814) Navy - SH 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-0 1. Manufacturer 2. Addr
49、ess 3. Date 4. Customer Name 5. Customer Order No. 6. Identification and Inspection Requirements Identification and Inspection Requirements Molybdenum Disulfide Isopropanol to to Military Spec. Federal Spec. MIL-M-7866 TT-1-735 I. General Information 1. Batch Number 1 (4.2.1.1) 2. Purchase Order 3. Verification of Ingredient Conformance to Specification (4.2.2.1.2) I I 1 II. Premixed Lubricant 4. Lot Number (4.2.1.2) 5. Dat
