AIR FORCE GGG-P-61 A-1966 PARALLELS STEEL AND CAST-IRON PRECISION-GROUND《平行线 钢和铸铁精密地面》.pdf

1、GGG-P-6la July 6, 1966 SUPERSEDING Fed. Spec. GGG-P-61 August 12, 1955 FEDERAL SPECIFICATION PARALLELS; STEEL AND CAST-IRON, PRECISION-GROUND TJL speoificaton was approved bu the Comnissimter, Federal Supply Serv- ice, Gelteral Services Admitzistratiox, for the Tise of all Federal agencies. 1. SCOPE

2、 AND CLASSIFICATION 1.1. Seope. This specification covers pi-e- ckion-ground, hardened steel, and cast- iron parallels for use in supporting work in Inspection, layout, and general machine-shop psactice. 1.1.1 Fedeyal specification coverage. This specification does not cavei- all types of par- allel

3、s, but ody those used most commonly by the Federal Government. 1.2 Classification. 1.2.1 Types. I Parallels covered by +his specification Test Methods. (Activities outside the Federal Government may obtain copies of Federal Specifications, Standards, and Handbooks as outlined under General Informa-

4、tion in the Index of Federal Specifications and Standards and at the prices indicated in the Index. The Index, which includes cumulative monthly sup- plements as issued, is for sale on a subscription basis by the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402.

5、 (Single copies of this specification and other product specifications required by activities outside the Federal Government for bidding purposes are available without charge at the General Services Administration Regional Offices in Boston, New York, Washington, D. C., Atlanta, Chicago, Kansas City

6、, Mo., Dallas, Denver, San Francisco, Los Angeles, and Seattle, Wash. (Federal Government activities may obtain copies of Federal Specifications, Standards, and Hand- books and the Index of Federal Specifications and Standards from established distribution points in their agencies.) Milit ary Specif

7、ication : MIL.H-15424-Hand Tods ; Packaging ai. Military StandarcEs: MIL-STD-105-Sampling Procedures and Tables for Inspeotion by Ab tribu tes, and Storage. MIESTD-129-Marking for Shipment (Copies of Military Specifications and Standards required by contractors in connection with specific procuremen

8、t functions should be obtained from the procuring activity or as directed by the contracting officer.) + . FSC 5220 . . += /“ TWtS DOCUMENT COMTAINS mpiy 7051 0%2 .O0015 ! .O003 .o002 1 .O004 TABLE I. Type I, solid 3.8 Type II, ribbed. Type II parallels Width and height Inches 1/8 by1 1/8 by 1-3/16

9、. 3/16 by 7/8 3/16 by 1-1/8 . 1/4 by 3/8 . 1/4 by 1/2 . 1/4 by 5/8 . 1/4 by 1 . 1/4 by 3/4 . 3/8 by 1/2 . 3/8 by 3/4 . 3/8 by 7/8 . 1/2 by 6/8 . 1/2 by 3/4 . 1/2 by 13/16 . 1/2 by 1 . 1/4 by 3/8 . 1/2 by 3/4 . 1/2 by 1 . 1/2 by 1-1/2 . 3/4 by 1 . 3/4 by 1-1/2 . 3/8 by 1 . 1/2 by 1-1/2 . 1/2 by 2 . 1

10、1/16 by 1-1/4 . 3/4 by 1 . 3/4 by 2 . 1 by 1-1/2 . 1 by 2 . 1 by 3 . 1-1/4 by 2-1/2 1-1/2 by 2 1-1/2 by 3 3/8 by 1 . 7/16 by 7/8 . 1/2 by 6/8 . 1/2 by 1-1/4 . 1-1/4 by 1-3/4 .-. . - Length rr: 0.020 Inches 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 9 9 9 9 9 9 9 9 12 12 12 12 12 12 12 12 12 12 12 12 12 ._

11、shall be rectangular in cross section, of cast gray iron ribbed in accordance with the size for lightness and yet maintain strength and stability. The r not protected by enamel as specif.ied. Adjustable parallels (type IV) not equipped with locking screws, ag specified. 4.3.2 Dimensional and weight

12、ezwmiwb- tion. Ed sample unit ghall be examined for any nonoonformance with dimensimal and weight. requirements. 4.4 Testing. Each sample unit shall be test- ed in accwdance with 4.4.1 through 4.4.3. 4.4.iHardness test. Eash of the sample pwallels shall be hardness tested in accord- ance wid5 method

13、s 242.1 or 243.1, ;LS appli- cable of Fed. Test Method Std. No. 151 to determine campliance with the hardness re- quirements specified herein. Conversion of hardness values shall be in accordance with method 241.1 of Fed Test Nethod Std. No. 151. 4.4.2 Swfuce finish test. Each of the sam- ple parall

14、els shall be tested for surfaee fin- ish in accordance with ASA B46.1 to deter- mine compliance viiith the surface finish re- arxiremenx specified. 4.4.3 Stabilizing ancl season.ng test. Cer- tificate of compliance describing the meth- 6 ods used, the duration of the piwesses, and other pertinent da

15、ka is required for the stabilizing and seasoning requirements of 3.7.1, 3.8.1, 3.9.1, and 3.10.1. 4.5 Inspection of preparation for delivery requirements. An inspection shall be made to determine that the preservation, pack- a.ging, and marking comply with the require- ments in section 5. Defects sh

16、all be scored in accordance with table VIII. For exami- nation of interior packaging, the sample unit shall be one shipping container fully pre- pared foi- delivery selected at random just prior to the dosing opei*ations. Defects of clmure listed shdl be examined on ship- ping container fully prepar

17、ed for delivery. The lot size shall be the number of ,ship- ping containers fully prepared for delivery. lot. TABLE VIII. Classiiication of prepamtion f 0.1. deliveTV defects Examine Markings (exterior an( interior) Materials Workmanship _ Defects Omitted; incorrect; iliegibIe; im- proper size; loca

18、tion, sequence, or niethod of application. Any component missing or damaged. Inadequate application of compo- nents such as incomplete closure of container flaps, loose strapping, inadequate stapling. Distortion of container. E. PREPARATION FOR DELIVERY 5.1 Preservation, packaging, and packing. Unle

19、ss otherwise specified (see 6.2), the parallels shall be preserved, packaged, and packed in accordance with MIL-H-15421. The levels of preservation and packaging shall be A or C and the level of packing A, B, or C, as specified (see 6.2). 5.1.1 As part of the requirements of sec- tion 5 of this spec

20、ification, table IX is COE- aidered as part of, and used in lieu of, that portion of table I of MIL-H-15424 coveriiig parallels. I ., I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_I_ Col. 1 - Parallels : Soli& Ribbed Box Adjustable Up through a

21、nd includin 6 pounds 7 pounds through 30 pounds 31 pounds through 1FO pounds Set : GGG-P-bLA 52 a 7777774 0044837 3 TABLE IX. Col. 2 P-8 P-8 P-8 P-8 P-8 . _ Col. Col. Col. 3 45 - IA-8 IA-8 IA-8 IA-8 1 1 1 :A-14 1 - I Y. 12 12 22 11 11 5.2 Marking. 5.2.1. Civil agencies. In addition to mark- ings req

22、uired by the contract or order, the interior padcages and shipping (containers shall be marked in accordance with Fed, Std. 123. 5.2.2 Milita?iiJ activities. In ,addition to markings required by the contraat or order, the interior packages .and shipping conbin- ers shall be marked in accordance with

23、 MIL-STD-129. 6. NOTES 6.1 Intended use. 6.1.1. Types I, II, and III parallels are in- tended to be used for impeation and layout work or for set-ups on various machine tools. 6.1.2 Type dV parallels are useful as gages jn ohecking the size of slots and openings and can also be used for layout work

24、or aet- ups on varions machine rtools. 6.2 Ordering data. Purchasers should se- lect the preferred options permitted herein and include the. followii?g data in procure- ment documents : (a) Title, number, and date of this speci- (6) Type of parallels required (see 1.2). (c) Size required (see tables

25、 I, III, IV, and V). (d) Whether sets are ab be furnished in plastic ar fabric wraps er rolls, or metal, plastic or wood boxes (see 3.5 and 3.6). (e) Whether paiiallels are to be furnished singly, in pairs, or in sets (see 3.7 and 3.10). fication. (f) Selection of app1id.de levels of paclc- aging an

26、d packing required (see 5.1) IVHLITARY CUSTODIANS : Army-WC Navy-SH Air Force-67 Revimo activities: AJXIY-WG Navy-SH Air Fmce-67 User activity: Navy-MC PTepaTing activity: Navy-SH US. GOVERNMENT PRINTING OFFICE 1966-2.0335?/513 Orders for bhis epecification are to be placed with General Services Administration, acting as an agent for the Superintendent of Documents. See section 2 of this specification to obtain extra copies and other documents referenced herein. Price 5 cents each. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-