GSA A-A-2448-1986 FILE HAND (SWISS PATTERN) NEEDLE SQUARE《针状方扁锉(瑞士式)》.pdf

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1、A-A-2448 51 m 7777774 00427b5 7 m Q/N-(.JY COMMERCIAL ITEM DESCRIPTION A-A- 2 4 4 8 I June 2, 1986 FILE, HAND (SWISS PATTERN) , NEEDLE SQUARE The General Services Administration has authorized the use of this commercial item description in preference to Type XVIII, Class 7 of Federal Specification G

2、GG-F-331, This commercial item description covers hand files used for filing, smoothing, and finishing intricate and small surfaces. Salient characteristics: Mater ia1 : Carbon alloy steel. Design : Tang : Tapered in width and thickness to produce a pointed end. Square cross section. Double-cut (two

3、 sets of parallel cuts on the surface, one set crossing the other) on all four sides or double-cut on three sides and uncut (safe) on one side. Round in cross-sectional area. Uniform in diameter. Knurled (either diamond or straight) the full length, or intermittently knurled approximately one-half o

4、f the full length, for firm gripping. Tempered to a maximum hardness of 45 on the Rockwell C scale at a point approximately midway of its length and width. Teeth: Uniformly cut or etched and of uniform height throughout the fully cut portion. Cutting surfaces hardened to a uniform hardness. The dist

5、ance between the heel and point of the file, excluding the tang, shall be hardened to not greater than 68 nor 1 ssbhan 63 on the Rockwell C scale. Free from decarburization and brittleness. Marking: Marked with the cut number, the country of origin, and the name of the manufacturer or with a tradema

6、rk of such known character that the source of manufacture may be readily determined. Workmanship: The teeth of the file shall be well-defined, sharp, and uniform in height and form. There shall be no evidence of rust or other defect which may impair serviceability, durability, or appear- ance. Ao T

7、Dimension of Number National Stock cut Overall largest section of teeth Length Number Number Length A per inch of cut Inches Inch Inch 5110-00-233-9697 O 4 1/16 5110-00-239-7597 O 5-1/2 3/32 5110-00-239-7602 2 6-1/4 7/64 5110-00-239-7603 4 6-1/4 7/64 90 2-1/8 14 2- 3/ 4 80 3-1/4 12 o 3-1/4 FSC 5110

8、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A- 24 4 8 Tolerance: Overall length - plus or minus 1/4 inch. Length of cut - plus or minus 1/4 inch. Width (A) - plus or minus 1/32 inch. Number of teeth per inch - plus or minus 5 percent. Regulator

9、y requirements. In accordance with the section 23.403 of the Federal Acquisition Regulations, the Governments policy is to acquire items composed of the highest percentage of recovered mater ils piacticable i consistent wiih main- taining a satisfactory level of competition without adversely affecti

10、ng performance requirements or exposing suppliers employees to undue hazards from the recovered mater ials. Preservation, packaging, packing, labeling, and marking. The preservation, packag- ing, packing, labeling, and marking shall be as specified in the contract or order. PREPARING ACTIVITY: GSA-FSS 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-