1、uDc 621.753.3 : 621.882.082 : 621.3 DEUTSCHE NORMEN November 1970 gauge*) i o u o o8 * : z h6 n 22 Pg 7 123 Pg 9 15 Pg 11 18,4 Pg 13,5 202 Pg21 28 Pg29 36,7 Pg36 447 Ps48 59 Pg 16 22.3 pg42 53j Steel Conduit Thread Thread Gauges “Go“ and “Not go“ Thread Xing Gauges 40431 Sheet 1 Stahlpanzerrohr-Gewi
2、nde; Gewindelehren, Gewinde-Gutlehrrlne und AusschuBlehrringe ?repared by the ME/FPE Joint Committee 0610-7/205.7 M 4 I. am +u u4 sm ci ao crl 2: i o,oi i 0,015 t OM Dimensions in mm P “Go“ thread rinE Rauues Thread profile turing toler- ance for P2) I- d3 =-: Gauge thread ) Major diameter dA =(d -
3、Effective diam.d2p = (d2- Minor diameter dlK = - (d HH -)kT 2 Designation of a “Go“ thread ring gauge for steel conduit thread Fg 21: “Go“ thread ring gauge Pg 21 DIN 40431 I “Go“ thread ring gauge Manuf ac- turing toler- 11,88 lip 1432 13,B 17,92 1725 * 0.01 19,72 19,05 21,82 21.15 27,s 26,776 36,2
4、2 3546 462 45,46 * 0LQ3) 53.22 52,46 5852 Y,76 a am rio PI. -I c mu m +al oUE0 &BOM 23 Y I 1Manufac-r I I I b C + 0.02 O dr d, and d The manufacturing tolerance on P applies to any number of threads within the ring gauge dimension b. If the manufacturing tolerance of +:.O2 mm is utilized to the full
5、 there ia no longer any margin for permissible wear. are basic sitee according to DIN 40430 4, Overall dimensions according to DIN 2254 Continued on page 2 leinverkauf der Normbltter durch Beuth-Vertrieb GmbH, Berlin 30 und Kln DIN 40431 B1.l engl. Preisgr.4 Page 2 DIN 40431 Sheet 1 Material: Gauge
6、steel, grade at manufacturers choice Finishi Gauging surfaces hardened. Sharp edges occurring at the thread runouts are removed. Dirt grooves according to DIN 2278 are to be agreed when ordering- -_- Inscription - and markinEl e.g. Pg 21 “GO“, manufacturer or manufacturers symbol hJg_4t$-gggge The “
7、Go“ thread ring gauge must be capable of being screwed by hand, without the application of undue force, over the full length of the workpiece thread. The Not gon thread ring gauge must be incapable of passing over the thread. For thread plug gauges for steel conduit thread, see DIN W3l Sheet 2 For gauges and measuring tools, technical conditions of delivery, see DIN 2239 (at present circulating as draft)
