1、V 1. 1. A-A-52123 999997Y 01Y3197 799 A-A-52 123 March 24, 1993 BARS, EUCKING, m The General Services Administration has authorized the use of this Carmercial Item Description in preference to MIL-B-920. CLASSIFICATION Classification. This carmiercial item description covers bucking bars in the foll
2、awing types and sizes as specified (see 5.2). nEE Namenclature Size ( inches 1 - Type1 Type II - Type IV - Typev TypeVI - TypeVI1 - TypeVI11 - Type IX - Typex Type XI - - - Tee head bucking bar Universal bucking bar Bell bucking bar Angle head bucking bar “L“ Head bucking bar Straight tapered buckin
3、g bar Offset, one-way bucking bar Tapered, offset, two-way bucking bar Trapezoidal bucking bar Channeled bucking bar 5 x 2-1/2 6-3/8 x 1-7/8 7-1/2 x 3-3/8 4 x 1-1/2 4 x 1-3/4 (see Figure 6) (see Figure 7) (see Figure 8) 3-15/16 x 1-5/8 ax3 1.2 CID based part identification number (PINI. A doclUment
4、based PIN to identify type nwrs is included in section 5. numbering procedure is for Government purposes and does not constitute a requirement for the contractor. This identification 2. SALIENT cumwEmsTIcs 2.1 Desian and construction. dimensions sham in figures 1 through 10, respectively. !Ihe bucki
5、ng bars shall be of the design and The bucking bars Beneficial camients, (recammdations, additions, deletions) and any pertinent data which may be used in improving this document should be addressed to: Center, Natick, MA 01760-5017 by using the Staradardi zation Document Improvement Proposal (DD Fo
6、m 1426) appearing at the end of this document or by letter. U.S. Army Natick Research, Developnent, and Engineering AMSC N/A FSC 5120 DmmN A. rrppiruved for mic release; ciistrmtion is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52
7、123 W 9999974 0343198 625 M . A-A-52 123 shall be made of steel or ductile (nodular) iron. inches. All dimensions shall be in Tolerances shall be in accordance with standard cormiercial practice. 2.1.1 Hardness. within the range of Roclaell C38 to C45 of ASIM E 18. The bucking bars shall be heat tre
8、ated to attain a hardness 2.1.2 Recess depth. For Types VII, WII, and IX bars, the recess depth for the rivet heads shall be in accordance with standard canwrcial practice. 2.2 Finish. All radii shall be not less than 1/16 inch unless otherwise specified; all surfaces marked “f“ (finish), and the cu
9、pped surfaces of the types VII, VIII, and IX bars shall be smooth and highly polished in accor- dance with standard cormiercial practice. bars shall be clean, free of cracks, sharp edges, sharp comers, and burrs. No plating is allowed. The bucking 2.3 Markinu for identification. Al1 bars shall be =k
10、ed with the manufacturers name or identifying synbol, the state or country of manu- facture, unless otherwise specified. molded or stamped (metal indented) directly on the items surface in such a mer that it remains clearly legible throughout the life of the item. All mrkings shall be engraved, etch
11、ed, 2.4 Workmanship. Details of workmanship shall be in accordance with the best carniercial standards and practices. corrosion and debris (e.g., chips, shavings, slivers) or other foreign material. (e.y., sharp or rough extemal edges, comers or surfaces) and material workmanship defects (e.g., pits
12、, rips, fins, airrs, tears, nodules, cracks, blisters) which my adversely impact the itemss serviceability, durability, safety, or appearance. The item shall be clean and free of The item shall be free fran manufacturing workmanship defects 3.1 Certification. The contractor shall certify, and mainta
13、in substanti- ating evidence, that the product offered mets the salient characteristics and requirements of this Comnercial Item Description, and that the product conforms to the producers own drawings, specifications, standards, and quality assurance practices. The Government reserves the right to
14、require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract. 3.2 Metric product. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided
15、 they fall within specified tolerances using conversion tables contained in the latest revision of Federal Standard No. 376, and all other requirenients of this Carniercial Item Description are met. If a product is mufactured to metric dimensions and those dimensions exceed the tolerances specified
16、in the inch-pound units, a request should be made to the contracting officer to determine if the product is acceptable. contracting officer has the option of accepting or rejecting the product. The 2 e e O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
17、,-,-A-A-52123 9999774 01431199 561 A-A-52 123 3.3 Real lato- requ irementS. recovered materials in accordance with miblic Law 94-580 to the maxirnrm extent practicable. The offeror/contractor is encouraged to use 4.1 Packauinu, pa ckinu, and mrkinq. packed, and marked in accordance with the danestic
18、 or overseas requirements of AsIM D 3951, as applicable (see 5.2). The bucking bars shall be packaged, 5.1 Intended use. the shanks of rivets during riveting processes. Rivet bucking bars are to be used for forming heads on 5.2 Acquisition requ irements. Acquisition dccuments nnist specify the follo
19、wing : a. Title, number, and date of this document. b. c. of rivet bucking bar required (see 1.1). Type of packaging and packing requirements required (see 4.1) . 5.3 Sources of documents. 5.3.1 Sources for noncmvemnt association documents. ASIM D 3951 - Standard Practice for Carniercial Packaging,
20、and ASIM E 18 - Rockwell Hardness and Rcckwell Superficial Hardness of Metallic Materials, are available fran: The American Society for Testing and Materials (ASIM) 1916 Race Street Philadelphia, PA 19103-1187 5.3.2 Sources of uovemntal documents. Copies of military and federal dccuments are availab
21、le fran: Standardization Documents Order Desk Wiilding 4D 700 Robbins Avenue Philadelphia, PA 19 11 1-5094 5.4 Part or identifvinu number (PINI. The PINS to be used for itm acquired by this CID are as follows: 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
22、m IHS-,-,-A52 A-A-52123 = 9999974 0143200 O03 = A-A-52 123 - 23 - Fxurple of PIN: -2123-VI1 L Type nirmber (see 1.1) CID number I Designates a CID MILITARY ImSl!S: CIVIL AGENCY CXXIRINATING ACTIVITY: CUStOdianS GSA - Fss Army-= Air Force - 99 Review Activities Army-m Air Force - 84 User Activities A
23、rmy-(=R Navy - IVE, 06, YD PREPARING ACTIVITY: Army- Projecrt 5120-W18 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52123 = 9999974 Ol1432OL T4T A-A-52123 f - 5 r I J6 l Ti ?i- ri LS 4 I b i.- Figure 1. - Type 1,-Tee head bucking bar U Figur
24、e 2. - Type II, Universal bucking bar 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52123 m 9999974 0143202 98b m A-A-5 2 123 F -E 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-52123
25、W 9999974 0143203 812 W A-A-52123 3 16 Figure 4. - Type V, Angle head bucking bar 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 1 A-A-52123 = 9999974 0143204 759 W A-A-52 123 t 7 8 t-4 n J Figure 5. - Type VI, “Ltl Head bucking bar 8 Provided b
26、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52123 9999974 0143205 695 m A-A-5 2 123 - Rivet Recsas Stock Dia. O/. Length Taper hngth (A.) Inches (3) Inches SI 29 Dia. (C Inches (Dl Inches 3 /8 1-5/8 24 1/2 1-5/8 24 5/8 2 24 3/4 2 30 5 7/8 2-1/8 30 A/A
27、* Any Accaptabla Figure 6. - Type VII, Straight tapered bucking bar Rlvet Recess Stoc!i Dia. O/A Length Size Dia. (C) Inches (i) Inches (A) Inckos 1 l,? 2 5/S 3 3/E 1-5/s 21 2 21 2 30 Figure 7. - Type VIII, Offset, one way bucking bar 9 Provided by IHSNot for ResaleNo reproduction or networking perm
28、itted without license from IHS-,-,-A-A-52123 9999974 014320b 521 m A-A-5 2 1 2 3 Rivet Rece8i Taper Lg. O/A Lg. Dim (2) Dim (FI Dia, (ci) 61- Dia: (Cl In, BI In. (A) In. Inches Inche8. Inches 1 7f 32 4-1/4 23-1/4 3/4 1 3/16 5116 2 1/2 4-114 23-1/4 1-1/2 2 3 /8 s/a Figure 8. - Type Ix, Offset, two way bucking bar Figure 9. - Type X, Trapezoidal bucking bar Figure 10. - Type XI, Channeled bucking bar 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
