1、MIL-B-23758A 77 W 7777706 0240LL4 3 = - MIL-B-23958A 3 April 1967 Superseding 16 Dec 1963 MIL-B-5612A (USAF) 20 Mar 1961 MIL-B-2 3 95 8 MILITARY SPECIFICATION BRUSH, CLEANING, AIRCRAFT, METAL BRIGHTENING This specification has been approved by the DepaPhent of Defense and is mandatory for use by the
2、 Departments of the Army, Navy and the Air Force. 1. SCOPE 1.1 Scope - This specification establishes the requirements of brushes used to apply metal cleaners and brightening agents to aircraft metal surfaces. 1.2 Classification - The brushes covered by this specification shall be of the following t
3、ypes and styles: Type I - Nylon Type II - Tampico Type III - 50% Nylon, 50% Tampico Type IV Type V Style 1 Style 2 Style 3 Style 4 2. APPLICABLE DOCUMENTS - 1/3 Bristle, 1/3 Horsehair, 1/3 Synthetic Filaments - Polypropylene (See 6.2) - Round Block 1 3/4“ x 5 3/811 Dia. - Rectangular Block 1 3/4“ x
4、2 1/2“ x 6“ - Rectangular Block 1 3/4“ x 3 1/2“ x 12“ - Rectangular Block 1 1/4“ x 2 3/4“ x 1011 2.1 The following documents of the issue in effect on the date of invitation for bids or request for proposal form a part of the-specification to the extent specified herein. THIS - 15 PAGES - Licensed b
5、y Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-2885 8A SPE CI E1CATIONS Federai H-S-951 R-N-91 Q6j-S-781 PPP-B-5 66 PPP-B-601 PPP-B-621 PPP-B-636 PPP-B-640 PPP-B-6 76 PPP-T-60 PPP-T-9 7 Military ML-C-5410 MIL-L-1
6、0547 ML-C-38334 STANDARDS Military MIL-STD-105 2 Synthetic Filaments, General Specification for Brushes Naphthalene, Technical Steel strapping, Flat Boxes, Folding, Paperboard Boxes, Wood, Cleated-Plywood Boxes, Wood, Nailed and Lock Corner Box, Fiberboard Boxes, Corrugated, Triple Wall Boxes, Set-u
7、p, Paperboard Tape, Pressure-Sensitive Adhesive, Water- proof for Packaging and Seaiing Tape, Pressure-Sensitive Adhesive, Fila- ment Reinforced Cleaning Compound, Aluminum Surface, Nan-Flame Sustaining Liners, Cwe, and Sheet, vemap, Water- Vaporproof or Water-proof , Flexible Corrosion Removing Com
8、pound, Prepaint, for Aircraft Aluminum Surfaces Sampling Procedures and Tables for inspection by Attributes Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-2375A 77 W 7777706 02L1OLLb 7 MI L-B-2 3 95 8A MIL-SYD-129 Marking for Shipment and Stor
9、age . ML-STD-130 Identification Marking of US. Military Property . (Copies of specifications and standards required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 5 2.2 Other publications - T
10、he following documents form a part of this specification to the extent specified herein. .Unless otherwise indicated the issue in effect on the date of invitation for bids or request for proposal shall apply. Official Classifications Committee Uniform Freight CIassification Rules (Application for co
11、pies of the above publications should be addressed to Official Classification Committee, 1 Park Avenue at 33rd Street, New York, New York.) American Trucking Association (Application for copies of the above publication should be National Motor Freight Classification Rules and Container Regulations a
12、ddressed to the American Trucking Association. 1424 16th Street, N. W., Washington, D. C.) 3 REQUIREMENTS 3.1 Standard product - The brush delivered under this specification shall be the manufacturers standard commercial product, except for any design modifications and additional requirements specif
13、ied herein, 3.2 Preproduotion sample - When specified (see 6.3), before production is commenced, a sample of the item covered by this specification shall be submitted or made -available to the contracting officer or his authorized representative for approval as specified in 42. #The approval of the
14、preproduction sample authorizes the commencement of production, but does not relieve the contractor of respon- sibility for compliance with all applicable provisions of this specification. The preproduction sample shall be manufactured by the contractor in the same facilities to be used for the manu
15、facture of the production items, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILE-23758A79 0b 0240337 9 MIL-B-23 95 8A 3. 3 Design and construction - Unless otherwise specified in the con- tract or order, the design and construction of the aircra
16、ft cleaning brush furnished in accordance with the requirements of this specification shall consist of a brush and handle. Brushes or handles ordered separately shall be interchangeable with each other, by type and style, and the original equipment respectively. (see 6.3) 3.4 Materials - Materials s
17、hall conform to the applicable specifications and requirements specified herein. Materials not specifically defined shall be of the quality normally used or this purpose in the man one on an angle of 45“ and one on an angle of 30. Holes shall be located at the corner of the longitudinal center of th
18、e block and shall not penetrate through the block, Hole angles shall be measured from the vertical plane with an angle tolerance of -I 2O, The holes shall be of suffi- cient size to hold the handle securely in the block by friction (see 3.4.3). 3.4.1.4.2 Style 1, 2, 3 - The number and size of handle
19、 holes shall be as indicated in figure6 1 and 2. 3.4.2 Brush Stock 3.4.2.1 be 0.015 inch thick, 3.4.2.1.1 Type V - Type V shall be irXii shaped (not round), Fibers shall Type IV - The brush stock*shall be an appropriate mixture of 1/3 bristle, 1/3 horsehair, and 1/3 synthetic filaments. Bristles sha
20、ll be light or dark brown sterilized hog bristles; horsehair shall be extra stiff, dark brown or gray and sterilized. Synthetic filaments may be any synthetic composition and shall meet the test requirements of Class N, Type II of Federal Specification H-S-951. Synthetic filaments shall be black, le
21、vel, having a diameter of 0.009 to 0.015 inch. The total minimum weight of the preceding materials comprising the brush stock shall not be less than 7.2 ounces when tested as specified in 4.3 and 4.5.3. Brush stock shall be formed by evenly proportioned tufts of the preceding materials. Each tuft sh
22、all have a minimum of 4 wraps of a suitable thread or filament, The trim length of the brush stock shall be 2 3/4 f 1/4 inches. (Trim length is measured from the face of the block to the working end of the brush.) 3.4.2.1.2 Setting compound - The end of each tuft shall be securely set into each brus
23、h hole by means of an epoxy or any durable setting compound, The setting compound used shall be water, acid, and oil resistant, The brush stock and the security of the attachement shall be capable of withstanding the immersion tests specified in 4.5.1. 3.4.2.2 . Type I, II, III and V - The brush sto
24、ck for type I, II,m and V shall a) Type I - Good grade white Nylon Fiber b) Type II - Good grade white Tampico Fiber c) Type III - 50-50 mixture of Type I and Type II d) Type V Polypropylene be as follows: Type V - Type V shall conform to class P Type IIi of Federal Specification H-S-951. The color
25、shall be black or natural as specified (6.3) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-2 395 8A I The brush stock shall solidly fill the holes and be evenly trimmed, The stock shall para 4,b,i. 3.43 Handle 3,4,3.1 Style 4 (For use with bl
26、ock Style 4) - Unless otherwise specified, the length of the handle shall be 5linches (see 6,3), The diameter of the handle shall be 1 1/8 inches, One end shall be rounded and the other end shall be tapered to a 3/4 inch diameter within a length of 3 inches, Tolerances for the preceding dimensions s
27、hall be h 1/16 inch, The handle shall be manufactured from stright grained hardwood lumber and shall have a mositure content not less than 8 percent nor more than 12 percent when tested as speclified in 4,5,2. Examination for defects in material construction, appearance and workmanship of the handle
28、 shall be as specified in 4.4,2. I I . . 3,4.3,2 Style 1 (For use with block Styles 1,2, 3 1 - Unless otherwise specified, each brush shall be furnished with a close-grain hardwood handle 15/16 inch in diameter, One end shall be threaded for 1 1/16 inches with an Acme thread 3/4 inch in diameter, 5
29、threads per inch, to fit the holes in the block. A tolerance of A 1/32 inch in diameter and i 1 inch in length will be allowed, The handles shall be 4 1/2, 6, or 6 feet in length, as specified. (see 6.3) I 3.5 Finish - The blocks and handles shall be smoothly sanded and shall have a natural polish,
30、smooth shellac or lacquer finish, 3,6 Identification marking- Each brush shall be permanently and legibly marked in accordance with MIL-STD-130 with the following informaton: Manufacturers Name or Trademark Stock Number U,S, Property Contract Number 3,7 Workmanshi2 - The finished brush shall conform
31、 to the qtrality of product establirihed by this specification, =d.the occurrence of defects shall not exceed the applicable acceptable quality levels. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-2375A 77 m 7777706 02q0122 2 m MIL-B-23958A
32、4. QUALITY ASSURANCE PROVISIONS 4.1 ResponsibiliSl 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 as otherwise speci- fied, the supplier may utilize his own faci
33、lities or any commercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specifications where such inspections are deemed necessary to assure supplies and service6 conform to prescribed require- ments. . . 4.2 Preproductio
34、n sample inspection - The preproduction inspection shall consist of all the tests of this specification as described under 4.5 exceptbrush stock weight 4.5.3, and all the examinations for defectsof the end items as described under 4.4. The responsibility for the performance of the preproduction insp
35、ection shall be as specified in the contract or order (see 6.3) . 4.3 Quality conformance inspection - For purposes of lot acceptance, quality conformance inspection shall consist of all the tests of this specification as described under 4.5, and all process and end item examinations of 4.3 and 4.4.
36、 4.3.1 Sampling - Unless otherwise indicated, sampling for inspection and acceptance shall be in accordance with MIL-STD-105. 4.3.1. 1 LA- An inspection lot for examination and tests shall consist of all matsrid submitted for acceptance and delivery at-one time. 4.3.2 Inspection of materials and com
37、ponents.- In accordance with 4.1, the supplier is responsible for insuring that materials and components used are man- ufactured, tested, and inspected in accordance with the requirements of this specifi- cation and referenced subsidiary specifications and standards to the extent specified or, if no
38、ne, in accordance with this specification. In the event of conflict, this specification shall govern. t 4.3.3 Process examination - Examination shall be made to determine I compliance with those fabrication features and characteristics which cmot be observed or determined in the examination of the e
39、nd product. This examination shall include inspection of the surface of the block for checks, splits, decay, or other defects affecting the serviceability of the block; number, depth, width, and b 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
40、-B-23 05 8A uniformity of distribution of holes for brush stock; and where applicable the per- centage of bristles, horsehair and synthetic filaments, the diameter of the synthetic filament used, weight of brush istock (4.3.3.1) and compound setting of tufts into brush block holes. Failure to meet t
41、he requirements of this examination shall be cause for rejection of affected end item lots. 4.3.3.1 me Wintermediate testing - Prior to the application of the Betting compound, the weight of the brush stock shall be determined in accordance with 4.5.3 for conformance to 3.4.2.1.1. The sample unit sh
42、all be the amount of bristle, horsehair, and synthetic filament to be used in one brush and the lot size shall be expressed in units of brushes. The requirements shall be applicable to the individual unit and the results shall be reported as pass or fail. The inspection level shall be 3-2 and the ac
43、ceptable quality level (AQL) shall be 6.5 defects per 100 units. 4.4 Examination of end item 4.4.1 Examination of the end item shall be made in accordance with the classification of defects, inspection levels and acceptable quaiity levels (AQLs) set forth in the following paragraphs. Lot size, for d
44、etermination of sample size in accordance with MIL-STD-105, shall be expressed in units of brushes for examina- tions in 4.4,2 and 4.4.3. For examinations in 4.4.4, lot size shall be expressed in units of shipping containers. 4*4,2 Examination of end items for defects in material, construction, appe
45、arance and workmanship - The sample unit for this examination shall be one brush and one handle as applicable. Not more than five brushes or handles shall be selected from any one shipping container. . The inspection level shall be S-2 and the acceptable quality level (AQL) shall be 6.5 defects per
46、100 units. (See Table I) 4.4*3 Examination of end item for dimensional defects - The sample unit for this examination shall be one brueh. The inspection level shall be 5-2 and the acceptable quality level (AQL) shall be 6-5 defects per 100 units. (See Table iI) 4.4.4 Examination of preparation for d
47、elivery - Aii examination ahall be made to determine that packaging, packing, and marking comply with the re- quirements of section 5 of this specification. The sample unit shall be one fully packed shipping container selected just prior to the closing operation. Shipping containers fully prepared f
48、or delivery shall be examined for closure defects. The inspection level shall be S-4 and the acceptable quality level (AQL) shall be 4.0 defects per 100 units. (see Table Di) 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-23958A 79 999790b
49、0240324 b TABLE I ;EXAMINATION IMIL-B-23958A IDE FE CTS Mat e rial Construction and Appearance Workmanship Identification Marking Block not close grained hardwood. Handle not straight grained hardwood. Slope of grain exceeds 1 inch in any 10 inch length of handle. Brush tufts not uniform; not made up of approximately equal quantities of horsehaik; hog bristles, and synthetic filaments. (Type rv) Any spl
