1、MIL-B- 5 2 390A 2 uecacner 1975 SUPERSEDING MIL-B-52390 28 September 1964 MILITARY SPECIFICATION BITS, AUGER; SHIP, WITH SCREW POINT This specification is approved for use by all Departments and Agencies of the Department of Defense, 1. SCOPE L 1.1 Scope. This specification covers ship auger- type w
2、ood-boring bits of various sizes for use with portable power drills arranged for procure- ment as individual items or in a set with a canvas roll. - 1.2 Classification. The auger bits shall be of thefollowing types, sizes, classes, and style, as specified (see 6.2): Type I - Individual auger bits. S
3、ize A - 7/16-inch nominal diameter. Size B Size C - 1-inch nominal diameter. Size D - 2-inch nominal diameter, Class 1 - 12-inch nominal length, Class 2 - 30-inch nominal length. - 3/4-inch nominal diameter. Type II - Auger-bit set. Style a - In canvas roll. 2. APPLICABLE DOCUMENTS 2.1 The following
4、 documents of the issue in effect on date of invita- tion for bids or request for proposal form a part of this specification to the extent specified herein: SPECIFICATIONS Federal CCC-D-9 50 PPP-P-40 - Dyeing and Aftertreating Processes - Packaging and Packing of Hand Tools. for Cotton Cloths. FSC 5
5、133 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Military MIL-R-45 80 4 STANDARDS Federal FED. STD, No. 356 Military MIL-STD-105 MIL-STD-129 MIL-STD- 130 DRAWINGS a C13211E3416 C13211E3417 C13211E3418 Cl321133429 - Rolls, Tools and Accessories.
6、- Comercial Packaging of Supplies and Equipment . - Sampling Procedures and Tables for Inspection by Attributes. - Marking for Shipment and Storage. - Identification Marking of US Ifilitary Property. - Bit, Auger, Size D. - Bit, Auger, Size C. - Bit, Auger, Size B. - Bit, Auger, Size A. (Copies of s
7、pecificaLions, standards, and drawings required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) . 2.2 Other publications. The following document forms a part of this specificatfon to the extent
8、specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) E 18 - Rockwell Hardness and Rockwell Superficial Hardness of lletallic Naterials . , (Application for copies ehould
9、 be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.) 3. REQUIREMENTS 3.1 Description. The auger bits shall be in accordance with the appli- ca
10、ble drawings and as specified herein. 3.1.1 Drawings. She drawings forming a part of this specification are end product drawings. tolerances is permissible without prior approval of the contracting officer. the supplier ahall provide tolerances within those prescribed on the drawings to insure corre
11、ct fit, assembly, and operation of the auger bits. Any data (e.g., shop drawings, layouts, flow sheets, processing procedures, etc.) prepared by the supplier or obtained from a vendor to support fabri- cation and manufacture,of the production item shall be made available, upon request, for inspectio
12、n by the contracting officer or his designated representative. No deviation from the prescribed dimensions or Where tolerances could cumulatively result in incorrect fits, 3.2 Material. Material shall be as specified herein and on the appli- cable drawings. Materials not specified shall be selected
13、by the supplier and shall be subject to all provisions of this specification. 3.3 Hole size. The diameter of holes bored with the auger bits through at least 8 inches of hardwood shall be. not less than the size sham on the drawings and not more than 1/32 inch larger than the size shown on the drawi
14、ngs. 3.4 Bow, The auger bits shall be straight and shall be free from any bow greater than 0.015 inch when tested as specified in 4.4.3. 3.5 Identification marking. The auger bits shall be identified in accordance with MIL-STD-130. size and the manufacturers name or trademark applied directly to the
15、 surface by stamping or other permanent method. The marking shall consist of the auger bit 3.6 3.6.1 Size A. The Size A auger bits shall conform to Drawings TYP e I - Individual auger bits. C13211E3419-1 for Class 1 and C13211E3419-2 for Class 2. 3.6.2 Size B. The Size B auger bits shall conform to
16、Drawings C13211E3418-1 for Class 1 and C13211E3418-2 for Class 2. 3.6.3 Size C. The Size C auger bits shall conform to Drawings C13211E3417-1 for Class 1 and C13211E3417-2 for Class 2. 3.6.4 Size D. The Size D auger bits shall conform to Drawings C13211E3416-1 for Class 1 and C1321133416-2 for Class
17、 2. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.7 3.7.l Style a. Typ e II - Augerlbit set. The Style a auger-bit sef Rhall consist of a canvas roll and the following Type I auger bits. Size A, Size A, Size B, Size B, Size C, Size C, Size D, S
18、ize D, Class 1 - 3 each, Class 2 - 3 each. Class 1 - 3 each. Class 2 - 3 each. Class 1 - 1 each. Class 2 - 1 each. Class 1 - 1 each. Class 2 - 1 each. 3.7.1.1 Canvas roll. The canvas roll shall be in accordance with MIL-R-45804, Size 18, with the following exceptions: (a) (b) The nominal overall siz
19、e of the roll shall be 49 inches long and 34 inches wide when unrolled. The roll shall be No, 10 duck, hard texture, and fitted with 16 pockets, sized to enclose the full length of the 16 auger bits of the set. The remaining length of the roll not used for pockets shall be used as a flap to cover th
20、e open end of the pockets and shall be secured to the inside of the roll with two snap fasteners. Two web straps, equipped with nonslip buckles and end clips, shall be furnished to secure the auger-bit set in the rolled pos it ion. The cloth shall be finished to conform to CCC-D-950, Type I, Class B
21、, Inhibitor e. (c) (d) (e) 3.8 WorkmanshiE. All machined surfaces of the auger bits shall be finished as specified on the applicable drawings;and shall be free of base metal cracks, pits, or rust. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the co
22、ntract or purchase order, the supplier is responsible for the performance of all inspection requirements specified herein. Specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection require- ments specified herein, unless d
23、isapproved by the Government. ment reserves the right to perform any of the inspections set forth in the specification where such inspecfions are deemed necessary to assure supplies and services conform to prescribed requirements. Except as otherwise The Govern- 4 Provided by IHSNot for ResaleNo rep
24、roduction or networking permitted without license from IHS-,-,-i MIL-B-52390A 4.1.1 Component and material inspection. The supplier is responsible for Insuring that components and materiala used are manufactured, examined, and tested in accordance with referenced specifications, standards, and drawi
25、ngs, as applicable. 4.2 Classification of inspections. Inspections shall be classified as follows : (a) (b) Quality conformance inspection (see 4.3), Inspection of preparation for delivery (see 4.5). 4,3 Quality conformance inspection. 4.3.1 Samplinq. Sampling for examination and tests shall be in a
26、ccord- ance with MIL-STD-105. 4.3,2 Examination. Samples selected in accordance with 4.3.1 shall be examined for the major defects specified in 4.4.1. percent defective. AQL shall be 2.5 4.3.3 Tests, Samples selected in accordance with 4.3.1 shall be tested as specified in 4,4.2. AQL shall be 4.0 pe
27、rcent defective. 4,4 Inspection procedure. 4.4.1 Examination. The auger bits shall be examined as specified herein for the following major defects: 101. Dimensions not as specified. 102. Material, heat treatment, or finish not as specified. 103. 104. Identification marking missing, incomplete, or no
28、t 105. Canvas roll construction not as specified. 106. Workmanship not as specified. Shanks or back taper not as specified. legible. 4.4.2 Tests. 1 4.4.2.1 Cuttinq. 5/8-inch square drive impact hammer. inches of Hardwood, hardwood shall cona titute failure of this test . Chuck the auger bit with a c
29、huck adapter to a Nonconformance of the hole to the tolerance speci- Bore a hole through at least 8 /fied in 3,3 or inability of the bit to bore through at least 8 inches of 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-52390A rn 4,4.2.2 Ha
30、rdnessJ. Teat the auger bit for hardness in accordance.with ASTM E 18 wing a diamond penetrator and a 150-kilogram load or on an equivalent tester. Make measurements on opposite flats ground on the cutter head. the drawings shall constitute failure of this test. Nonconformance to the hardnese requir
31、ements specified on * 4.4.3 Bow. The bow shall be measured by placing the sample auger on a flat surface plate so that one inch of the auger measured from the cutter projects beyond the plate. failure of this .tes t. Nonconformance to 3.4 shall constitute 4.5 Inspection of preparation for delivery.
32、The preservation, pack- aging, packing, and marking of the auger bits shall be examined to determine compliance with the quality conformance requirements of PPP-P-40. 5. PREPARATION FOR DELIVERY 5.1 Preservation. Preservation shall be Level A or Commercial, as specified (see 6.2). 5.i,i Level A, The
33、 auger bits shall be preserved in accordance with PPP-P-40 5.1.2 Commercial. The auger bits shall be preserved in accordance with the requiremetits of PED. STD. No. 356, d 5.2 Packing. Packing shall be Level A, B, or Commercial, as specified (see 6.2). 5.2.1 Level A. The auger bits shall be packed i
34、n accordance with the Level A requirements of PPP-P-40. 5.2.2 Level B. The auger bits shall be packed in accordance with the Level B requirements of PPP-P-40. 5.2.3 Commercial. Packing of the auger bits shall be in accordance with FED. STD. No. 356, 5,3 liarking, 5.3.1 Military, Marking for military
35、 levels of protection shall be in accordance with MIL-STD-129. 5.3.2 Commercial, Marking for comercial packaging shall be in accord- ance with J!EDSTD. No. 356, 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-5239A 6. NOTES 6.1 Intended we. T
36、he auger bits are to be used for boring through heavy timbers. 6.2 Ordering data. Procurement documents should specify the follaring: (a) (b) (c) Title, number, and date of this specification. Type, size, class, and style, as applicable, required (see 1.2). Level of preservation and level of packing
37、 required . (see 5.1 and 5.2), 6.3 Classification change. The Type.11, Style b, auger-bit set in wood or metal boxes has been discontinued since it is no longer required. i Custodians : Army - ME Air Force - 84 Review activity: Army - GL User activitiee: U US. GOVERNMENT PRINTING OFFICE: 1975-u13J66:7U Preparing .activity : Army - ME Project No. 51334040 7 B) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
