1、DRAFT FOR PUBLIC COMMENT Latest date for receipt of comments a? 900 MPa (A286) - Bars - Aerospace series. 2) EN 2175 Heat resisting steel FE-PA 93 HT, solution treated and preciptation treated - Sheets and strips a 3 mm - Aerospace series. 2) EN 2424 Aerospace series - Identification marking of stan
2、dard fasteners 2). EN 2516 Aerospace series - Passivation of corrosion resisting steel 1). 3 Required Characteristics 3.1 Configuration - dimensions - tolerances The configuration shall be in accordance with the figure; the dimensions and tolerances shall conform to the values shown in the figure an
3、d in the table after passivation except for surface roughness. For washers prodcced from sheet or strip material to EN 2175 the requirement of IC0 4759-3 may be applied for roll over and fracture tolerances. 3.2 Surface roughness See Figure - The values apply before passivation. 3.3 Materials Steel
4、EN 2171 or EN 2175. 3.4 Surface treatment Passivation EN 2516. 1) In preparation at the date of publication of the present standard. 2) Published as AECMA standard at the date of publication of the present standard. 3 90; 79055 prEN 3016 Page 4 Dia Code 030 040 , O50 060 070 080 100 120 140 1) 100SB
5、oih Sides Bolt dl a2 d3 s 1) Hass 2) to1 +O110 -kg/iOOO pieces 0r27 tol ! nom 3x0,50 3,lO 7r40 I 3,85 Thread H13 nom Size 4xOt70 lr10 9r40 4,85 I l,oo 0,43 1 6x1,OO 6,lO 14,O 7,40 I 2roo 2,18 50,80 5,lO 12,20 tot20 6,OO 20,l 1,39 I 2,83 I 71,00 7,lO 16,90 8,40 8X1,OO 3,10 19,40 9840 3,76 101,25 10,l
6、O 23,50 +0,30 llr60 ,81 1 121,25 12,l.O 28,lO 13t80 +O,lS 2,SO 9,72 14x1,50 14,lO 31,30 16,15 11,71 I Flatness variations are included in thickness tolerances Figure - Configuration Table - Dimensions and mass Dimensions in millimetres 4 90; 79055 DG prEN 3016 Page 5 4 Designation Each washer shall
7、only be designated as in the following example: Description block WASHER, -COUNTERSUNK, LOAD SPREADING Ident it y EN3016-O block O - Note: If necessary the originator Code I9005 may be introduced between the description block and the identity block. 5 Marking SN 2424 style G (Packaging) In addition, the quantity shall be declared .umber) 5
