H. E. Morse Co.公司 成立于1946年，此后不久，一种的电镀工艺被开发出来。朝鲜战争期间，H.E.摩尔斯公司开始为美国政府制造螺纹塞规Hemco Gage。的电镀工艺应用于量规的镀铬，使其比标准工具钢量规的使用寿命延长400%。Hemco的制造工厂位于美国密歇根州的荷兰。该组织现在通常被称为Hemco或Hemco量规，生产全系列的固定限位量规和可变量规，包括螺纹和圆柱形或平面。Hemco的Ekonogage是我们在荷兰生产的销规生产线。Hemco Gage还生产符合美国石油学会（API）规范的量规，是美国仅有的两家获得API标准量规生产许可的制造商之一。Hemco Gage的产品因其较长的使用寿命和的质量而得到世界各地的认可。

苏州斯托茨机电设备有限公司专业代理德国进口螺纹规、德国DIN量规，德国JBO螺纹规、德国LMW莱尔麦斯量规、意大利Marposs MG量规。同时代理：美国Cameron球规、Mueller Gage航空量仪、Sun-tec硬度计、Universal同心度仪、 PMC Lone Star石油螺纹规、PMC Mercury量规、Hemco Gage紧固件螺纹规、Vermont Gage针规、VTG螺纹规、美国GSG非标螺纹规、Threadcheck航空螺纹规、 Westport医疗螺纹规、英国Threadmaster惠氏螺纹规、Tru-thread石油螺纹规、美国Gagemaker单项仪，瑞士TESA测高仪、德国Mahr马尔粗糙度仪、数显深度尺、东精精密圆度仪、Marposs气动量仪、Trimos测高仪、海克斯康三坐标、影像仪、英国Zodiac gauge、英国Original Gauge螺纹规等。

Stub  Acme  ................. Stub  Acme  threads  ..................................................................................................................................................................... B1.8

UN  ............................... Unified inch screw thread, constant-pitch series ................................................................................................................. B1.1

UNC  ............................ Unified  inch screw thread, coarse pitch series .................................................................................................................... B1.1

UNF ............................. Unified  inch screw thread, fine-pitch  series ........................................................................................................................ B1.1

UNEF .......................... Unified inch screw thread, extra-fine pitch series .............................................................................................................. B1.1

UNJ .............................. Unified inch screw thread, constant-pitch series, with  rounded  root of radius 0.15011P  to 0.18042P  (3) UNJC ........................... Unified  inch screw thread, coarse-pitch series, with  rounded  root of radius 0.15011P  to 0.18042P  (3) UNJF  ........................... Unified inch screw thread, fine-pitch  series, with  rounded  root of radius 0.15011P  to 0.18042P  (3) UNJEF ........................ Unified inch screw thread, extra-fine pitch series, with  rounded  root of radius 0.15011P  to 0.18042P  (3)

UNJS  ........................... Unified  inch screw thread, special diameter, pitch or length of engagement with  rounded  root radius of .15011P-.18042P UNR   ............................ Unified inch screw thread, constant-pitch series, with  rounded  root of radius not less than 0.108P  .................... B1.1

UNRC ......................... Unified  inch screw thread, coarse-thread series, with  rounded  root of radius not less than 0.108P ..................... B1.1

UNRF .......................... Unified inch screw thread, fine-pitch  series, with  rounded  root of radius not less than 0.108P ............................ B1.1

UNREF ....................... Unified inch screw thread, extra-fine pitch series, with  rounded  root of radius not less than 0.108P  ................. B1.1

UNM ........................... Unified miniature thread series ............................................................................................................................................... B1.10

UNS  ............................. Unified  inch screw thread, special diameter pitch or length of engagement ............................................................... B1.1

Notes:  .......................... (1) All threads, except NGO,  are right hand, unless otherwise  designated. For NGO  threads, designations RH or LH are required. (2)  As published in SAE AS71505

(3)  As published in Military Specification MIL-S8879,  ISO 3161 and ASME B1.15.