2016年5月16日 · Unified National Coarse Screw Thread per ANSI B1.1 screw thread date chart. The Nominal Major Diameter and Threads-per-inch (Pitch) are defined by ANSI/ASME B1.1 and are the choices for the customary Unified screws and nuts.

2005年4月26日 · UNJ vs. UN UNJS vs. UNS UNJC vs. UNC UNJF vs. UNF UNJEF vs. UNEF WHERE The J series thread is defined in specification ANSI/ASME SAE AS8879 (formerly MIL-S-8879) and in ANSI/ASME B1.15. WHY The rounded root of a UNJ external thread greatly improves fatigue strength over that of a flat root UN thread. It seems that sharp cuts at the minor diameter of the external screw thread create stress ...

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UN Series Rings, Unified Inch Thread Ring & Set Plug Gages. Thread gages for measuring threads, sales & information for all thread gage types.

2021年5月28日 · 1 #6-40 UNF Internal Pitch Diameter Segment; Minimum Pitch Diameter: 0.1218"; Right Hand Thread; Set=2 Segments #8-32 UNC Internal Pitch Diameter Segment; Minimum Pitch 0.1437";

2016年2月26日 · The first designation is simply: UN. UN = Unified National. UN is used for a set of specific thread series which have uniform or constant threads-per-inch. The eight constant threads-per-inch (TPI) series are: 4-TPI; 6-TPI; 8-TPI; …

2025年3月7日 · set Handles (Surplus)2 set

5.1.4.1. System 22 provides for interchangeable assembly with functional size control at the maximum material limits within the length of standard gaging elements; and also control of the minimum material size limits over the length of the full thread.

2013年4月1日 · ANSI/ASME B1.1 specifies the screw thread form, series, class, allowance, tolerance and designation for unified screw threads. These threads may also be known as unified inch screw threads.

2013年2月27日 · Obsolete N-series (Rings) External Threads with Pitch Diameter limits. Thread gages for measuring threads, sales & information for all thread gage types.