1、 I NCH-POUND GGG-M- 35 OB July 16, 1990 SUPERSEDING GGG -M- 3 5 0A September 8, 1966 FEDERAL SPECIFICATION MIRROR, IKSPECTION This specification is approved by the Commissioner, Federal Supply Service, General Ser-vices Administration, for the use of all Federal agencies. 1. SCOPE AND CLASSIFICATION
2、 1.1 Scope. This specification covers inspection mirrors of the type generally used for visual examination in positions and places where it would otherwise be difficult or impossible to see. 1.2 Classification. The inspection mirrors shall be of the following types, classes, and styles, as specified
3、 (see 6.1). Type I - Ball joint (mirror adjustment) Class 1 - Circular mirror Style A - Fixed length handle Style B - Telescoping length handle Style A - Fixed length handle Class 2 - Oval mirror Type II - Plunger actuated (mirror adjustment Class 3 - Rectangular mirror 2. APPLICABLE DOCUMENTS 2*.1
4、Government publications. The isques of the following documents in effect on date of invitation for bids or solicitation for offerr, form a part sf this specification to the extent specified hereit. Federal Specifications: QQ-C-320 - Chromium Plating (Electrodeposited) QQ-N-294 - Nickel Plating (Elec
5、trodeposited) PPP-P-40 - Packaging and Packing of Hand Tools (Activities outside the Federal Government may obtain copies of Federal Specifications, Standards, and Commercial Item Descriptions, as outlined under General Information in the Index of Federal Specifications, Standards and Commercial Ite
6、m Descriptions. The index, which includes cumulative bimonthly supplements as issued, is for sale on a subscription basis by the Superintendent of Documents, U. S. Government Printing Office, Washington, DC 20402. (Single copies of this specification, .other Federal Specifications, Standards, and Co
7、mmercial Item Descriptions required by activities outside the Federal Government for bidding purposes are available without charge from General Services Administration Business Service Centers in Boston; New York; Philadelphia; Washington, DC; Atlanta; Chicago: Kansas City, MO; Fort Worth; Houston;
8、Denver; Los Angeles; San Francisco; and Seattle, WA. (Federal Government activities may obtain copies of Federal Specifications, Standards, Commercial Item Descriptions and the Index of Federal specifications, Standards, and Commerical Item Description from established distribution points in their A
9、gencies. 1 DISTRIBUTION STATEMENT A: Approved for public release, distribution is unlimited. FSC 5128 Licensed by Information Handling Services+- GGG-Pi-350B CL 7777774 0057707 T GGG-M-358B Military Standard: MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes (Copies of milita
10、ry 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.) Other publications. The following form a part of this specification to the extent specified herein. Unl
11、ess otherwise, indicated, the issue in effect on date of invitation for bids shal.1 apply. American Society for Testing and Material (ASTM Standard: ASTM B 633 - Specification for Electrodeposited Coatings of Zinc on Iron and Steel (Application for copies should be addressed to the American Society
12、for Testing Materials, 1916 Race Street, Philadelphia, PA 19103.) 3. REQUIREMENTS 3.1 Materials. The material used in the manufacture of inspection mirrors shall be steel. 3.2 Components. The inspection mirrors shall consist of a mirror, handle, 3.3 Coating. Unless otherwise specified (see 6.11, all
13、 metal components, and applicable mirror angle adjustment mechanism. other than corrosion-resistant steel, shall be either chromium, nickel plated, or zinc plated. 3.3.1 Chromium plating. Chromium plating shall be as specified in QQ-C-320, class 1, type I. .? .,.3.2 Nickel platino. Nickel platin- sh
14、all be. as specified in QQ-N-ZYE:, class 1, grade G, as applicable. 3.3.3 Zinc plating. Zinc plating shall be as specified in ASTM B 633, Type II, Service Condition 2 (moderate). 3.4 Mirror reflecting surface. Unless otherwise specified (see 6.1), the reflecting surface of the mirror shall be glass.
15、 The mirror shall reflect an image that is free from distortion or blind spots. The glas shall be protected by a stainless steel back. When specified (see 6.11, the reflecting surface shall be one of the following, at the manufacturers option. (a) 304 or 430 corrosion resistant stainless steel, poli
16、shed on both sides (b) Brass, or cold rolled steel. These materials shall be chromium plated a minimum of 0.000045 .inch over a minimum of 0.0082 inch nickel on both sides. (c) Cold rolled steel, chromium plated a minimum of 8.000005 inch over a minimum of 0.0002 inch nickel one side, and nickel pla
17、ted a minimum of 0.0002 inch other side. The mirror reflecting surfaces must have a 7 micro-inch finish or better and polished. 3.4.1 For the type I, class 1 mirror, a chipboard or paperboard shim shall be placed between the back and the mirror. The metal edqes of the back shall be rolled or coined
18、to prevent the mirror from falling out or separatinq from backing. 3.4.1.1 For the type I, class 2 mirror, the metal back shall be punched out with one tab on each side of the mirror and two tabs on back. Paperboard or chipboard shim and mirror are placed in the metal frame back. The two tabs shall
19、be folded to hold mirror in place. Licensed by Information Handling Services- t 1/16 Overall length Size inch Minimum Max imum Inches Inches Inches GGG-M-350B 3.5.1.1 For the type I, class 2 mirror, the metal back shall be punched out with one tab on each side of the mirror and two tabs on back. Pap
20、erboard or chipboard shim and mirror are placed in the metal frame back. The two tabs shall be folded to hold mirror in place. The reflective coating of the glass mirrors shall be so deposited as to preclude any defects or blemishes in the reflecting surface such as, lifting or separation of the sil
21、ver from the glass. The reflecting surface shall be free from spots or haze resulting from incomplete removal of chemicals used in preparing the silvered surface of the glass, or any other visible defects in or on the silver. 3.5.2 Silvering. 3.5.3 Chromium plated mirrors. When a chromium plated bra
22、ss or steel mirror is furnished, it shall conform to the requirements of 3.3.1 and 3.4 on both sides. mirror is furnished, it shall be polished on both sides and conform to the requirements of 3.4. straight across the mirror surface and shall include the edges of the protective surface. Overall leng
23、th measurements shall be made with the mirror and handle in a straight line. 3.7 Identification marking, Each mirror shall be marked, on a surface other than the reflecting surface with the manufacturers name or identifying symbol and the state or country of manufacture. The marking shall be etched,
24、 engraved, stamped, in a legible manner so that the source may be readily identified throughout the life of the item. 3.5.4 Corrosion-resistant steel mirrors. When a corrosion-resistant steel 3.6 Measurements. Measurements of mirror reflective surfaces shall be taken 3.8 Type I, ball joint. The insp
25、ection mirrors shall have a double ball swivel joint linkage, a mirror adjustment mechanism capable of holding the mirror securely and allowing rotary motion in every direction. The adjastment mechanism shall be capable of being adjusted to maintain joint tightness throughout the life of the mirror.
26、 Tne inspection mirrors siiell Ur i lie class, sty:, and sizs specified and shall conform to the applicable requirements of table I, II, or III. TABLE I. Type I, class 1, style A Di ame ter of mirror 1 7/8 6 8 3 1-1/4 7 9 TABLE II. Type I, class 1, style B Di ame ter Overall length of mirror Closed
27、x tended Size 21/8 inch Minimum Maximum I nches Inches Inches Inches Inches 1 2-1/4 9 11 13 15 3 3-3/4 12 16 30 34 TABLE III. Type I, class 2, style A Oval mirror measurements Overall length Size f 1/16 inch Minimum Max imum Inches Inches Inches 1 1 by 2 8 10 3.8.1 Handle gripping surface. A vinyl o
28、r plastic grip, completely encasing the handle for a minimum of 4 inches from the end of the handle shall be provided. 3. Licensed by Information Handling ServicesGGG-M-350B 51 = 999993Y 0057707 3 W GGG-M-350B 3.7.2 Style B, telescoping handle. The inspection mirrors shall be provided with an adjust
29、able lensth handle consisting of an inner solid rod and outer tube, hex on one-end. The handle parts shall be designed to allow free movement with a minimum clearance between sections to preclude the possibility of these parts becoming loose under service conditions. round end of the outer tube shal
30、l be rolled over to prevent separation. The handle shall be provided with a stop clip to prevent the inner and outer handles from becoming disengaged when the handle is fully extended. Non-rotating inner hex rods shall prevent mirrors from swinging out of alignment when in use. In the assembling of
31、the handle, the 3.8 Type II, plunger actuated. The handle of type II inspection mirrors f utilize mechanical linkage connected to the mirror frame whereby the mirror may be , shall contain a spring loaded, plunger actuated, mirror angle adjustment capable of set at, and locked into, any angle from 9
32、0 degrees through 180 degrees (a plane parallel to the handle) inclusive, to the longitudinal axis of the handle and have the capacity of returning to the 180 degrees position upon release of the locking device. Type II inspection mirrors shall be of the class and size specified, and shall conform t
33、o the applicable requirements of table IV. The frame ends shall be crimped to insure and retain the reflecting mirror. The mirror shall not slip or fall out of the frame. Components of actuating parts that are permanently attached shall withstand longitudinal force as specified in 4.3.4. * one-hand
34、operation and release. This actuating mechanism shall be designed to TABLE IV. Type II, class 3 Rectangular mirror Me as ur em en t s Overall length Size f 1/8 inch Minimum Max imum Inches I nches I nches 1 1-1/4 by 1-1/2 10 12 2 1-3/4 by 2-5/8 14 18 3.9 Workmanship. Mirrors furnished under this spe
35、cification shall be free of . cracks, scratches, burrs, fins, sharp projections, or any imperfections which may. iiiipair LL-: - .-,.; -L: 1 : f i ed . A X X X X X X X X X X X X X x .I 4.2.1.1 Sampling for dimensional defects. Random samples shall be examined for dimensional requirements as specifie
36、d in the applicable table and paragraphs. The inspection level shall be I with an AQL of 4.0 percent defective. 4.2.2 Testing. Random samples shall be tested in accordance with paragraph 43, as applicable. The inspection level shall be S-3 with an AQL of 2.5 percent defective. 4.2.3 Examination for
37、preparation for delivery. An examination shall be made to determine compliance with the requirements of section 5 and the contract, The sample unit shall be one container fully prepared for delivery. Defects shall be scored in accordance with Table VI. The inspection level. shall be 5-3 with an AQL
38、of 4.0 percent defective. TABLE! VI. Classification of Preparation or Delivery Requirements Examine Markinqs (exterior and interior) Defects Omitted; incorrect; illegible; improper size, location, sequence, or method of appl ica ti on. Ma ter i a 1 s Any component missing, or damaged. Workmanship In
39、adequate application of components such as incomplete closure o container flaps, loose strapping, inadequate staplinu. Distortion of container. 5. Licensed by Information Handling ServicesGGG-M-350B 51 7777774 0057933 I W , GGG-M-350B 4.3 Test procedures, 4.3.1 Mirror reflection test. Random samples
40、 selected in accordance with 4.2 shall be examined to determine that the requirements of this specification have been met (see 3-4). 4.3.2 Mirror adjustment joint tightness test. Type I inspection mirrors shall be tested with the mirror set at 90, 105, 120, 135, 150, and 165 degrees to the longitudi
41、nal axis of the handle (see figure 1). The mirror adjustment mechanism shall be capable of holding the mirror in these preset positions while the handle is rotated manually about its longitudinal axis at least 360 degrees. These tests shall be accomplished once with the longitudinal axis of the hand
42、le maintained in a horizontal plane and once maintained in a vertical plane (with the mirror positioned above the handle). The mirror shall not separate from the handle when adjusted and shall withstand a pull-apart force of 20 pounds for type I, class I, style A, and 50 pounds for type I, class 1,
43、style B without separating from the handle. 8. f ,goo FIGURE 1. Mirror angle positions. 4.3.3 Telescope handle test. The handle of style B inspection mirrors shall be fully extended and the mirror set at 90 degrees to the longitudinal axis of the handle. The outer handle shall be rotated as specifie
44、d in 4.3.2, without evidence of the one or more inner handle sections slipping or sliding in the other sections. 4.3.4 Type II actuating components. Permanently installed components of actuating parts of type II mirror assemblies shall withstand longtudinal forces of not less than five pounds applie
45、d between attachment parts without failure of permanently installed connection. 5. PREPARATION FOR DELIVERY 5.1 Preservation, packaging, packing and marking. Preservation, packaging, packing, and marking shall be in accordance with PPP-P-40. The level of preservation, packaging, and packing shall be
46、 A or C, as specified (see 6.1). 6. Licensed by Information Handling ServicesGGG-M-350B 6. NOTES 6.1 Ordering data. Purchasers should select the preferred options permitted herein, and include the following -information in procurement documents. (a) Title, number and date of this specification. (b)
47、Type, class, style required (see 1.2). (c) Size required (see table I, II, III, or IV). (d) Coating other than that specified (see 3.3). 5 (e) Reflecting surface material other than glass (see 3.4). (f) Plastic grip, if not required for type I (see 3.7.1). (g) Level of preservation, packaging, and packing required (see 5.1). k MILITARY INTEREST PREPARING ACTIVITY Military Coordinating Activity GSA - FSS Army - GL Custodians Army GL Navy - SA Air Force - 99 Review Activity Air Force - 84 P 7. Licensed by Information Handling Services
