GSA A-A-2312 A-2002 FILE HAND (AMERICAN PATTERN) HALF-ROUND《半圆形手锉(美式)》.pdf
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1、mEzE.A-A-2312AOctober 8,2002SUPERSEDINGA-A-2312September 27,1985COMMERCIAL ITEM DESCRIPTIONFILE, HAND (AMERICAN PATTERN), HALF-ROUNDThe General Services Administration has authorized the use of this commercial item descriptionby all federal agencies.1. SCOPE. This commercial item description covers
2、hand tiles used for general purpose filing on flatand concave surfaces.2. CLASSIFICATIONType I Bastard-cutType H Second-cutType III Smooth-cut3. SALIENT CHARACTERISTICS.e 3.1 Design. The file shall be tapered in width at least 1/3 of the length to the point. Either parallel inthickness or tapered Sl
3、ightly form approximately the middle of the length to the point. Flat side shall bedouble-cut (two sets of parallel cuts on the surface, one set crossing the other.The back side (convex side) shall be double-cut, except that second-cut files in 4 and 6 inch length andall smooth-cut files may be sing
4、le-cut (one set of parallel cuts on the surface), or double-cut, at theoption of the manufacture. The files shall be furnkhed in three types and sizes as shown in section 3.2.Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other dataewhich may improve this do
5、cument should be sent to: General Services Administration, Federal SupplyService, Hardware SuperStore (6FEE), 1500 E. Bannister Rd Bldg. #6, Kansas City, Missouri64131.FSC 5110Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2 Dimensions!A-A-23 12AD
6、imensions at Largest Allowable AllowableLength Section Number of Teeth Distortion WarpageBack FlatA B Min Max Min Max Max MaxIn In In Per In Per In In DegreeType I - Basta rd-cut6 5/8 5132 29 34 29 34 0.008 38 % 7/32 24 28 24 28 0,010 310 15/16 9/32 21 24 21 24 0.025 312 1-1/8 11/32 19 21 18 20 0.02
7、5 314 1-5/16 13/32 17 19 16 18 ().050 16 1-1/2 29/64 15 17 14 16 ().060 3Type II -Secon d-cut4 7116 1/8 51 59 51 59 0.006 36 5/8 5/32 41 46 41 46 ().008 38 % 7132 33 37 33 37 0.010 310 15/16 9132 29 32 29 32 0.025 312 1-1/8 11/32 26 29 26 29 0.025 314 1-5/16 13/32 23 26 23 26 0.050 3Type III - Smoo
8、th-cut4 7/16 1/8 65 73 65 73 0,006 36 5/8 5/32 50 56 50 56 0.008 38 3/4 7/32 44 50 44 50 0.010 310 15/16 9/32 39 43 39 43 0.025 312 1-1/8 11/32 34 37 34 37 ().025 314 1-5/16 13/32 31 34 31 34 0.050 3Length Dimensions: Measured from the point (free or front end) to the heel and have a toleranceof+/-
9、1/8”.Tolerance: Width (A)plus orminus l/16”; Thickness (B)tiles 6inlengti +/-322Files over 6“ in length +/- 1/16.3.3 Material. The file shall beofacarbon alloy steel.3,4 Shall beofaconventional shape mdsizesuitable forattachment toawoodhmdle.Tempered toamaximum hardness of450nthe Rockwell Cscalewhen
10、 tested per ASTM E18, It shallbe measured at a point approximately midway of its length and width.3.5= Shall redesigned for fast cutting andminimize clogging. Uniformly cutoretched andofDuniform height throughout the fully cut portion. Cutting surfaces shall be hardened to a uniformhardness. Thedist
11、ance between theheel andpoint of the file, excluding thetmg, shall beharde1ledto anotgreater thm68nor less thm640n tie Rockwell Cscalewhen tested per ASTM El8. The file shallbe free from decarburization and brittleness.LProvided by IHSNot for ResaleNo reproduction or networking permitted without lic
12、ense from IHS-,-,-;.t A-A-23 12A3.6 MarkinK The file shall bemarked withthe nameofthe mmufacturer orwitha trademark of suchknomcharacter that thesource ofmmufacture may bereadily detemined.3.7 Workmanship. Theteeth of the file shall bewell-defined, shaW, anduniform inheightatld form,There shall beno
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