API SPEC 7-2-2017 pdf free download

API SPEC 7-2-2017 pdf free download.Threading and Gauging of Rotary Shouldered Connections.
4 General Information 4.1 General In this standard , data are expressed in both the International System (SI) 01 units and the U.S. customary (USC) system of units. Separate tables for data expressed in SI units and USC units are given in Annex B and Annex C , respectively. Figures express data in both SI and USC units. For a specific order item , it is intended that only one system of units be used , without combining data expressed in the other system. Products manu1 actured to specifications expressed in either 01 these unit systems shall be considered equivalent and totally interchangeable. Consequently , compliance with the requirements 01 this standard as expressed in one system provides compliance with requirements expressed in the other system. Some of the dimensions in USC units have been converted 1rom traditional fractional measurements. Depending on the rounding conventions used , tabulated dimensions andlor tolerances may differ by up to 0.002 in. from some existing manufacturing documents. These differences are to be considered acceptable and in compliance and shall not be cause of reject ion . See Annex D for guidance on unit conversion and rounding NOTE Any sty le 01 rotary shouldered connection can be made in right-hand ( RH) or left-hand (LH) versions; right-hand is assumed unless otherwise designated as LH; lelt-hand threads are not supported by the in ternational system 01 gauges and calibration , except in the REG style. Purchaser Supplied Information 4.2 In placing orders for equipment to be manufactured with rotary shouldered connections in accordance with this standard , the purchaser shall specify the following on the purchase order: number of th is standard; a) thread style and size; and b) the with optional are which Section 6 , In de tailed as requirements supplementary if necessary , purchaser. c) Threading 5 Thread Profile and Dimensions 5.1 Overall Dimensions 5.1.1 Rotary shouldered connections shall be furnished in the sizes and styl es shown in Figures 1 and 2 and Table 8.1. Dimensions of rotary shouldered connections shall conform to Table 8.1 , with the thread forms defined in Table 8.2. T he dimensions shown in Tables 8.1 and 8.2 that have no specified tolerance and do not have tolerances defined below , shall be considered reference dimensions. Deviations from these dimensions shall not be cause for rejection. The extent of the bevel of the small end of the pin is optional wi th the manufacturer. Right-hand threads shall be considered standard. Le ft- hand threads may be made using this standard , bu t traceable gauging following this standard exists only in the REG style. Pin Dimensions 5.1.2 The pin dimensions in Table 8.1 shall be interpreted using Figures 1 and 2.
5.1.3 Pin base diameter dimensional requirements shall be as follows. Rotary shouldered connections on drill collars shall have a cylindrical region at the base conforming to the dimension D LF of Table 8.1 and shall have a radius R LF 1 .6 mm +0 .4 mm (0 .063 in. +0.016 in.) at the pin base as shown in Figure 2 , except when a stress- re lief groove is used. ··· – ···· •••• . .. This feature reduces the stress concentration factor in this area. Rotary shouldered connections on products other than drill collars , such as tool joints , may have a tapered region at the pin base rather than a cylindrical region. In this case the rad i us at the intersection of the taper and the seali ng face shall be 0. 78 mm +0.12 mm (0.031 in. +0.005 in .) , as shown in Figure 2. The distance be t ween the pin shoulder and the intersection of the pin base diameter or thread major cone wi th the thread flank at the first point of full thread depth shall not exceed Lft (see Figure 2)
5.1 .4 Shoulder Contact Face Shoulder contact faces of rotary shouldered connections shall be plane , and square with the thread axis , within 0.05 mm (0.002 in.). The surface finish of the contact face, before any surface treatment, shall be 5 !-1 m (1 25 !-l in.) Ra or better , so as to assure a reliable sealing surface 5.1 .5 Standoff Rotary shouldered connections shall be produced with standoff tolerances as specified in 7.2. 5.1 .6 Lead Tolerance The lead tolerance of rotary shouldered connections shall be as follows: mm per 25.4 mm (0.001 5 in. per in.) for any 25 .4 mm (1 .0 in .) between first and last full depth threads; and b) +0.1 1 4 mm (0.0045 in.) between first and last full depth threads , or the sum of 0.0254 mm (0.001 in.) for each 25 .4 mm (1 in .) between first and last full depth threads , whichever is greater. The method for determining lead is described in 7 .4.