1、-=- a=ol-=-x MIL-B-2505G 28 December 1984 SUPERSEDING MIL-B-2505F 26 September 1975 MILITARY SPECIFICATION BUCKLES, CENTER-BAR WITH TONGUE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This document covers center-bar buckles
2、with tongue. 1.2 Classification. Buckles shall be of the following types, classes and sizes as specified (see 6.2). Type 1 - With roller Class 1 Size Size Class 2 Size - Size - Brass (copper alloy) casting - 5/8-inch . - 1-inch - Malleable iron casting - 5/8-inch - 1-inch Beneficial comments (recomm
3、endations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: .U.S. Army Natick Research and Development Center, Natick, MA 01760-5014 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing a
4、t the end of this document or by letter. e FSC 5340 / 7 THIS DOCUMENT CONTAINS /J PAGES - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-, MIL-B-2505G 53 M 7779706 007bbb L1 M MIL-B-2505G Class 3 - Steel. stamping Size - 1-inch Class 4 - Brass stamp
5、ing Size - 1-inch Type II - Without roller Class 1 - Brass (copper alloy) casting Size - 5/8-inch Size - 3/4-inch Class 2 - Malleable iron casting Size - 5/8-inch Size - 3/4-inch 2. APPLICABLE DOCUMENTS 2.1 Government documents. Unless otherwise specified, the following documents of the issue in eff
6、ect on date of invitation for bids or request for proposal, form a part of this document to the extentspecified herein. SPECIFICATIONS FEDERAL QQ-W-32 1 QQ-C-390 QQ-W-46 1 QQ-B-6 13 TT-C-490 TT-E-529 PPP-B-566 PPP-B-636 PPP-B-665 PPP-B-676 MIL I TARY MIL-F-495 Wire, Copper Alloy Copper Alloy- Castin
7、gs (Including Cast Bar) Wire, Steel, Carbon (Round, Bare and Coated) Brass, Leaded and Nonleaded: Flat Products Cleaning Methods and Pretreatment of Ferrous Enamel, Alkyd, Semigloss Boxes, Folding, Paperboard Boxes, Shipping, Fiberboard Boxes: Boxes, Setup (Plate, Bar, Sheet and Strip) Surfaces For
8、Organic Coatings Paperboard, Metal Edged and Components - Finish, Chemical, Black, For Copper Alloys 2- * . I O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-2505G 53 I 777770b 007bbb7 b W MIL-B-2505G . -STANDARDS FEDERAL FED-STD-595 - Colors
9、 MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection MIL-STD-129 - Marking for Shipment and Storage - by Attributes DRAWINGS U.S. ARMY NATICK RESEARCH AND DEVELOPMENT CENTER 4-1-109 - Buckles, Center-Bar, With Tongue (Copies of documents required by manufacturers in connection with
10、specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other publications. Unless otherwise specified, the following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this d
11、ocument to the extent specified herein. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) A 47 - Malleable Iron Castings A 322 - Steel Bars, Alloy, Standard Grades A 366 - Steel, Carbon, Cold-Rolled Sheet B 281 - Preparation of Copper and Copper Base Alloys or Electroplating B 633 - Electrodeposited
12、 Coating of Zinc on Iron and Steel D 3951 - Standard Practice for Commercial Packaging (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadlephia, PA 19103.) (Technical society and technical association documents are generally availa
13、ble for reference from libraries. technical groups and using Federal agencies. They are also distributed among 2.3 Order of precedence, In the event of a conflict between the test of this document and the references cited herein, the text of this document shall take precedence. 3. REQUIREMENT 3 Prov
14、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-B-2505G 53 7777906 0036670 2 - . MIL-B-2505G 3.1 First article. When specified, a sample shall be subjected to first article inspection (see 4.3, 6.2, and 6.3). 3.2 Materials. (see 6.4) 3.2.1 Copper all
15、oy. 3.2.1.1 Castings., copper alloy. Copper alloy castings shall conform to type I, condition as cast, alloy A3 of QQ-C-390. 3.2.1.2 Brass, sheet or striE. Brass sheet or strip shall conform to copper. alloy number 260 or 268, quarter-hard temper of QQ-B-613. 3.2.1.3 Copper alloy.wire. Copper alloy
16、wire shall conform to alloy number 260 or 270, quarter-hard temper of QQ-W-321, 3.2;2 Malleable iron castings. Malleable iron casting shall conform to grade 32510 or 35018 of ASTM A 47. 3.2.3 Steel. 3.2.3.1 Steel, sheet and strip. Steel sheet and steel strip shall be cold, rolled, any temper, commer
17、cial quality arid conform to ASTM A 366. 3.2.3.2 Steel wire. Steel wire shall conform to AIS1 number 1006 or 1010, finish 1, annealed in process, of QQ-W-461. 32.4 Enamel. The enamel shall conform to type II, of TT-E-529. The color shallbe semi-gloss black, No. 27038 of FED-STD-595. 3.3 Construction
18、. The construction and forming of the buckles shall conform to the style and requirements as shown on Drawing 4-1-109. 3.3.1 Buckle body. 3.3.1.1 Castings, types I and II. Bodies of type I and II, class 1 buckles shall be fabricated of copper alloy casting specified in 3.2.1.1. Bodies of types I and
19、 II, class 2 bckles shall be fabricated of malleable iron casting specified in 3.2.2, The copper alloy and malleable iron castings shall have no porosity, blowholes, blemishes, slag, warps, digs or other casting imperfections. smooth. All sharp edges and burrs shall be removed and finished 3.3.1.2 S
20、tampings, type I. Bodies of type I, class 3 buckles shall be stamped from steel sheet or strip specified in 3.2.3.1. Type I, class 4 buckles shall be stamped form brass sheet or strip specified in 3.2.1.2, 3.3.2 Tongues, buckles, type I and II. Tongues for type I,. classes 1 and 4 and type II, class
21、 1 buckles shall be fabricated from copper alloy wire 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-2505G 53 W 7799906 007bb7L 4 - L specified in 3.2.1.3. Tongues for type I, classes 2 and 3 and type II, class 2 buckles shall be fabricated fr
22、om steel wire specified in 3.2.3.2. assembling and finishing, the tongue shall be capableof free pivot movement on center bar without binding. The tip end of tongue shall be positioned in close contact with the body or roller, as applicable, and shall not protrude beyond the body or roller. groove o
23、f the center bar and shall be free from lateral movement of more than 1/8 inch total and slipping out of the center bar groove. After The tongue shall be securely attached at the 3.3.3 Rollers, buckles, type I. Rollers for type I, classes 1 and 4 buckles shall be fabricated from brass sheet or strip
24、 specified in 3.2.1.2. Rollers for classes 2 and 3 buckles shall be fabricated from.stee1 sheet or strip specified in 3.2.3.1. After assembly to body and finishing, the roller shall be capable of rotating freely without binding on body bar, The roller shall be evenly formed around the body bar. The
25、joint of the roller shall be butted evenly along its entire length. 3.4 Finish. Prior to finish application, buckles shall be free from corrosian, rustl dirt, discoloration, scratches and tool marks. Type I, class 1 and 4, and type II class 1 loops shall be cleaned.as specified in ASTM B 281 and AST
26、M A 322. cleaned in accordance with wethog I, II, or V of TT-C-490. Type 1, class 2 and 3, and type IL, class 2 buckles shall be 3.4.1 3e The type I, classes 1 and 4 and the type II, class 1 buckles after fabrication and assembly, shall be given a black chemical finish, . OOO05-. 0002 inch thick, co
27、nforming to MIL-F-495. The color shall be semi-gloss black, No. 27038, conforming to FED-STD-595. 3.4.2 Black enamel, type I and type II buckle. The type I, classes 2 and 3 and type II, class 2 buckles shall be given a phosphate treated zinc plate conforming to type IV, class SC3 of ASTM B 633, foll
28、owed by baked enameling. The enamel shall be as specified in 3.2.4. The enamel shall dry to.a smooth and uniform film, free from runs, wrinkles, orange peel or areas of no film. 3.5 Marking for identification. The buckles shall be permanently and legibly marked with the manufacturers name or tradema
29、rk of such characters as to be identifiable with the manufacturer. back surface of the buckle body in such a manner that the front surface shall show no signs of penetration, unevenness, or cause distortion on any part of the buckle. The marking shall be made on the All markings shall be made prior
30、to assembly and finishing. 3.6 Workmanship. The buckles shall be free from burrs, slivers, sharp edges, dents, tool marks, deformations or fractures. 4. .QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is re
31、sponsible for the performance 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-2505G of all inspection requirements as specified herein, Except as otherwise specified in the contract or purchase order, the contractor may use his own or any oth
32、er 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 the document where such inspections are deemed necessary to assure supplies and services
33、conform to prescribed requirements. 4.2 Classification of inspection. The inspection requirements specif ied herein are classified as follows: a. b. First article inspection (see 4.31, Quality conformance inspection (see 4.4). 4.3 First article inspection. When a first article is required (see 6.21,
34、 the buckle shall be examined for defects specified in table I, and 4.4.4. The presence of any defect shall be cause for rejection of the first article. 4.4 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with MIL-STD-105. 4.4.1 Co
35、mponent 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 excluded, amended, modified, or qualified in this document or applicable purchase document. 4.4.2 In-process inspectio
36、n. Inspection shall be conducted to see that type I, class 2 and 3 and type II, class 2 buckles are given a phosphate treated zinc coating as specified in 3.4.2. noted, correction shall be made to the affected items and the process. Whenever a nonconformance is 4.4.3 End item visual examination. The
37、 end item shall be examined for the defects listed in table I. The lot size shall be expressed in units of buckles. The sample unit shall be one buckle. The inspection level shall be II and the acceptable quality level (AQL), expressed in terms of defects per hundred units, shall be 2.5 for major de
38、fects and 10.0 for total (major and minor combined) defects. TABLE I. End item visual defects Classification Examine Defect Major Minor Finish (general) Not finished or finish not as specified X Not color specified X Evidence of corrosion X Black chemical finish U “7 Color not as specified Finish no
39、t clean and uniform X X 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-6-2505G 53 = 7777906 007bb3 b TABLE I. End item visual defects (contd) Classification Exam in e Defect Major Minor Black chemical finish (contd) Construction and workmanshi
40、p Area of no film or color not as -specified Separation of color, or finish rough (i.e. lint, dust, dirt or other foreign matter embedded in finish) Finish not continuous, smooth and adherent (i.e. orange peel, wrinkles, drops, streaks) Component missing, i.e., tongue or roller Not fabricated as spe
41、cified, i.e., tongue attached in reverse position Component is not specified type, class, or size Any component not fabricated of applicable referenced material Casting has evidence of crack, porosity, blow hole, warp, dig, or gouge Tongue not capable of free pivot movement on center bar, i.e.,. bin
42、ds Tip end of tongue not positioned in . close contact with the body or roller Tip end of tongue protrudes beyond the body or roller Tongue not securely attached at the groove of the center bar Lateral movement of tongue is more than 1/8 inch total Tongue slips out of center bar groove Roller not ca
43、pable of rotating freely, Roller unevenly formed around the body The joint of the roller is not butted Buckle has burrs, slivers, sharp edges, i*e., binds on body bar bar evenly dents, tool marks, deformations, or fractures 7 . X X X X X X X X X X X X X X X X X X Provided by IHSNot for ResaleNo repr
44、oduction or networking permitted without license from IHS-,-,-MIL-B-2505G TABLE I. End item visual defects (contd) Class if ication Major Minor Examine Defect Identification Missing, incomplete, illegible, or mark i ng incorrect X Not on- back surface of buckle body Distortion on any part of the buc
45、kle x X on front surface of buckle X Indication of penetration or unevenness 4.4.4 End item dimensional examination. The end item shall be examined for conformance to the dimensions specified on the drawing. within the specified tolerance shall be classified as a defect. The lot size shall be expres
46、sed in units of buckles, The sample unit shall be-one buckle. The inspection level shall be S-2 and the AQL, expressed in terms of defects per hundred units, shall be 4.0. Any dimension not 4.4.5- Packaging inspection. An examination shall be made to determine that preservation, packing and marking
47、comply with section 5 requirements. Defects shall be scored in accordance with II. The campe unit shall be one chipping container fully packaged. The lot size shall be thenwnber of containers in the inspection lot. The inspection level shall be S-2 and the AQL, expressed in terms of defects per hund
48、red units, shall be 2.5. TABLE II. Packaging defects Exami nation Defect Marking (exterior Missing; incorrect; incomplete; illegible; of improper and interior size, location, sequence, or method or application, container) Ma ter i a 1 Companent missing or damaged. wo r kmans h ip .Inadequate applica
49、tion of components such as: incomplete closure of container flaps or inadequate strapping, tape bonding, stapling, or cushioning, Bulged or distorted container. Contents Less than specified or indicated number of buckles Number per shipping container is more or less than per unit pack. required. 8 4 a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
