1、WCH-POUND A-A-52596 February 21.1996 SUPERSEDING MS39335 24August 1970 COMMERCIAL, ITEM DESCRIPTION BIT, BUTTON, ROCK DRILL, FOR DRIFTER DRILLS The General Services Administration has authorized the use of this commercial item description (CID) for all federal agencies. 1. SCOPE. This CID covers but
2、ton bits for use with drifter drills. 2. SALENT CHARACTERISTICS 2.1 Materials. Unless specified herein, the materials used shali be in accordance with manufacturers material specifications for button bits. 2.2 Design and construction. The button bits shali be in accordance with the requirements of t
3、his specification and shall be the manufacturers standard commercial product (see figure 1). Beneficial comments, recommendations, additions, deletions clarification$ etc, and any other data which may improve this document should be sent by letter to: U.S. Army Tank-automotive and Armaments Command,
4、 ATTN: AMSTA-TR-EBLUE, Warren, MI 48397-5000. DISTRIBUTION STATEMENT A Approved for public release; distribution is unlimited. FSC 3820 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52596 DIA. DIA. DASH NO. A B -1 2.50 .44 -2 . 2.75 .44 -3 3.00
5、 .44 -4 3.50 .44 50 -5 4.00 rT38 FEMALE LEFTHAND THREAD DIM. C (see note 5) (RI (Hl -61 .74 -61 .74 .61 .74 -61 .74 .70 .86 N - MIN NOTES: 1. Dimensions are in inches. 2. There shail be a minimum of two blow holes. 3. Minimum load required to remove inserts shall be 4200 pounds (lbs). 4. There shall
6、 be a minimum of nine spherical tungsten carbide button inserts of which 5. Requirement option for regular ) or heavy (HJ duty bits. 6. Unless otherwise specified, linear tolerance shail be 2 0.015 inch. 7. The PIN dash numbers and the prior MS dash numbers are the same. not less than six inserts sh
7、all be located on the gauge circumference. FIGURE 1. Button bit. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-52596 9999974 0370430 635 = A-A-52596 2.2.1 Threads. The threads shall be turned parallel to centerline and concentric with 0.01 i
8、nch of gauge circumference. Thread portion shall be T38 female lefi hand thread. 2.2.2 Rock bit. Bit body matenal shall be thru hardenable alloy steel with hardness throughout of Rh42-45C. 2.3 Identification and marking. Identification and markings of the button bit shall be permanent and legible an
9、d shall include, as a minimum, the manufacturer?s identification code (CAGE), the contract number, the part or identification number (PIN) (see 6.2 and 6.3) and the national stock number (NSN). 3. REGULATORY REQUIREMENT. The offeror/contractor is encouraged to use recovered materials to the maximum
10、extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 4. QUALITY ASSURANCE PROVISIONS. 4.1 Resoonsibility for inspection. The contractor is responsible for the performance of ail inspection examinations and tests. 4.2 Contractor certification. The contr
11、actor shall certify and maintain substantiating evidence that the product offered meets the salient Characteristics of this CID and that the product conforms to the producer?s own drawings, specifications, workmanship standards, and quaiity assurance practices. Items with known defects shall not be
12、submitted for government acceptance. The government reserves the right to require proof of such conformance prior to the first delivery and thereafter as may be othenvise provided for under the provisions of the contract. 5. PRESERVATION, PACKAGING, PACKING, AND MkTUUNG. Preservation, packaging, pac
13、king, and marking shall b as specified in the contract or order (see 6.2). 6. NOTES. (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) ,I 6.1 Source of documents. The-Code of Federal Rehlations (CFR) may be obtaind from the Superintende
14、nt of Documents, U.S. Government Printing Office, Washington, DC 20402. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52596 ,6.2 Acauisition data. Acquisition documents must specify the following: a. Title, number, and date of this CID. b. Is
15、sue of DODISS to be cited in the solicitation. c. Type, PIN, and quantity of button bits required. d. Selection of applicable level and packaging requirements. 6.3 Part or identification number CpDJ) . The PIN to be used for acquisition of button bits for drifter drills are created as foilows: AA 52
16、596 X X T T I- Bit R - Regular H - Heavy duty Dash number (see figure 1) 6.4 Cross-reference data. Button bits conforming to this CID are interchangeabfdsubstitutable with button bits conforming to MS39335. MILITARY INTERESTS: CITrD; AGENCY COORDINATION ACTIVITY: GSA - FSS custodians: Army - AT Navy - MC Air Force - 99 Review Activities: Air Force - 84 DLA - CS Preparing Activity: Army - AT (Project 3 820-0013) I 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
