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WN 1461 EJOT K Screw copy

EJOT K Screw

CASE HARDENED EJOT PT®- K SCREWS

表面渗碳钢

EJOT-WN 1461 Part: 1 Sheet: 1

[ NOT FOR FUTURE DESIGN !] 1.0 1.1 1.2 2.0 2.1 3.0 3.1 Other relevant standards For testing and acceptance DIN EN ISO 3269 shall apply. For technical specifications and measurements EJOT-WN 1463 (finishes and tolerances) shall apply. Material properties Material: Case hardening steel according to DIN EN 10263, Part 3 or EJOT-delivery specifications, respectively. Metallurgical properties Surface hardness

After heat treatment the surface hardness is 400 to 500 HV0,3. The Vickers hardness test according to DIN EN ISO 6507, Part 1 shall apply. 3.2 Core hardness After heat treatment the core hardness is 320 to 380 HV10. The core hardness shall be determined using the Vickers hardness test in accordance with DIN EN ISO 6507, Part 1. 3.3 Case depth (EHT) The values given in table 1 shall apply for hardness EHT 400. Table 1: max. case depth (EHT 400) For this drawing we reserve all rights. Without our permission it may neither be copied nor made accessible to third persons. All patent, trademark and other right in and to this drawing and design are expressly reserved by EJOT®.

Screw size K 18 K 22 K 25 K 30 K 35 K 40 K 50 K 60 K 70 K 80 K 100

max. EHT (400)[mm] 0,05 0,08 0,09 0,10 0,11 0,12 0,14 0,16 0,18 0,20 0,26

The case depth may be determined microscopically on a longitudinal section at the thread flank midpoint. DIN 50190 Part 1 shall apply for determining the case depth by means of hardness measurements.

18.09.03 changed

7 Index

Section 4.2: Text added: - At screws with EJOT PT®-K thread and a rolled point…; * Tentative standard specification concerning ... becomes invalid modification

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WN 1461  EJOT K Screw copy

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