1、AEROSPACERECOMMENDED PRACTICE ARP1590 REV. AIssued 1999-07 Revised 2009-06 Reaffirmed 2014-10 Superseding ARP1590 Recommended Part Numbering Guidelines for Fluid System Components Inch System of Measurements RATIONALE ARP1590A has been reaffirmed to comply with the SAE five-year review policy. _ SAE
2、 Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom,
3、 is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All rights reserved. No part of this public
4、ation may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (ou
5、tside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/ARP1590A 1. SCOPE This SAE Aerospace Recommended Practice (ARP) presents a recommended
6、 part numbering scheme for fluid system component parts, which may require complex standard numbers. Standardizing on certain numbering systems provides for numbering simplicity, ease of interchangeability and supersession (when required), standardization and limitation of usable codes. This ARP is
7、similar to ISO/TC20/SC10 and its usage is recommended for commonality in international standard part numbering practices. 1.1 Purpose The purpose of this ARP is to consider the part numbering system for hose assemblies, fittings, and clamps. Other components may be added later. 1.1.1 Each component
8、type has established standard codes, which are unique to that type and cannot be interchanged with other component types. 1.1.2 The recommendations shown herein are based on the inch system of measurement. Recommendations based on the metric system of measurement are in coordination in ISO/TC20/SC10
9、. 1.1.3 Use of these codes is expected, but is not obligatory, when defining characteristics of components covered by this practice. Codes, other than those specified in this practice, that appear on existing standards may continue to be used and are not necessarily considered to be in contradiction
10、 with this practice. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase or
11、der. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1.1 SAE Publications Available from
12、SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), http:/www.sae.org ARP1785 Standard Codes for Outer Sleeving on Hose Assemblies ARP5102 Fluid Fittings - Jump Size Limitations 2.2 Definitions BASIC STANDARD
13、NUMBER: A number that is the drawing specification or standard number for a part or family of parts, sometimes referred to as a “stem number”. For standards that have been adopted by SAE during the Military Standard Reform Exercise, the prefix of the standard number and the stem number may not coinc
14、ide. DASH NUMBER: Each digit of a part number, other than the basic standard number, used to define and differentiate individual part configurations with the standard. DIGIT: For the purpose of simplicity and clarity in the context of this document, the word “digit” encompasses all numbers, alpha ch
15、aracters (where all letters are capitalized) and symbols that occupy a space within a part number. NON-SIGNIFICANT DASH NUMBER: A non-significant dash number is a dash number that is numerical, sequential, and contains no coding. 3. CONSTRUCTION OF PART NUMBERS 3.1 Part Number Length To the maximum
16、extent possible, part numbers should be limited in length to 15 digits. Part numbers up to 19 digits in length are acceptable, if required to fully differentiate part numbers. 3.1.1 Part number construction should be as simple as possible. If part numbers become very complex, separation into more th
17、an one standard should be considered. 3.2 Basic Standard Numbers It is recommended that the basic standard number be a maximum of 7 digits in length even though the part number examples shown herein allow a higher maximum number of digits. 3.3 Dash Numbers 3.3.1 Non-Significant Dash Numbers If non-s
18、ignificant dash numbers are used, they would be two digits in length unless the scope of the standard requires more than two digits to identify all the variations contained on the standard. SAE INTERNATIONAL ARP1590A Page 2 of 16_ 3.3.2 Coded Dash Numbers Significant coding in part numbers should be
19、 avoided. Part numbers without significant coding may be established for any part, even though standardized coding is available herein. 3.4 Example of a Simple Part Number (see Figure 1) Part Number (inclusive of the basic standard number and the dash number) XX12345 - 01 Non-Significant Dash Number
20、 (all digits other than the basic standard number) Basic Standard Number (this number cannot be used as a part number) FIGURE 1 - EXAMPLE OF A SIMPLE PART NUMBER 3.5 Example of a Complex Part Number (see Figure 1A) Part Number (inclusive of the basic standard number and the dash number) XX12345B12A0
21、900 Complex Dash Number (all digits other than the basic standard number) Basic Standard Number (this number cannot be used as a part number) FIGURE 1A - EXAMPLE OF A COMPLEX PART NUMBER 3.6 General Recommendations 3.6.1 Whenever possible, a hyphen (-) should be used to separate numbers from each ot
22、her (in lieu of a space) but should not be used to separate letter codes from numbers. Running letter codes consecutively or number codes consecutively should be avoided but is not prohibited. A hyphen (-) shall constitute one character. 3.6.2 If consecutive number codes or letter codes are used, no
23、 more than four (4) successive number codes or letter codes shall be used, and adjacent codes shall not be ambiguous in meaning. 3.6.3 When establishing a new basic series of numbering, issuance of the short basic standard number series should be limited to those parts requiring long, complex dash n
24、umbers and justify their use to stay within the 15 digit limitation. Typical fluid system parts requiring this would be hose assemblies and reducer/expander tee fittings. Short basic standard number may also be needed to stay within the 19-digit limitation, reference para 3.1. Example: Basic standar
25、d numbers AS1 thru AS999 should be reserved for use in this manner. The shorter base document number series is to be requested and used when the completed part number would exceed the 15-character limit. SAE INTERNATIONAL ARP1590A Page 3 of 16_ 3.7 Limitations 3.7.1 Letters “I”, “O”, “Q”, “X”, and “
26、Z” shall not be used as code letters. 3.7.2 Numbers shall be Arabic numerals. 3.7.3 Blank spaces are not permitted. 3.7.4 Symbols such as parentheses ( ), asterisk *, degree , plus + shall not be used, except when referencing the Government or Industry document whose identification contains such a s
27、ymbol. On new documents, where there are “/” (slash) sheets, the slash shall be dropped and replaced with a dash “-“. 3.7.5 The dash number shall have the same characteristics as the basic standard number and may be composed of numbers, letters, or any combination thereof. 3.7.6 Part standard drawin
28、g revision letters (if any) shall not be included in the part number. 4. RECOMMENDATIONS FOR COMPLEX NUMBER REQUIREMENTS The following paragraphs are part-numbering recommendations for certain types of parts where inconsistencies and problems in development of part numbers are known to exist. NOTE:
29、For very special parts, consideration should be given to establishing individual drawings for each part number. 4.1 Standard Numbering System for Hose Assemblies 4.1.1 General Codes The following option codes, sleeving codes, numeric size codes, letter size codes, length codes, and angular orientati
30、on codes are established standards for use in construction of significant part numbers. Usage of these codes is not mandatory if a non-significant part numbering discipline is used. 4.1.1.1 Option Codes Option code letters to be used in the part number are shown in Table 1: TABLE 1 - HOSE ASSEMBLY O
31、PTION CODES Code Letter Option A Oxygen Clean H Both safety wiring and solid / dry film lubricated provisions L Drilled for safety wiring N Solid / Dry Film Lubricated Note: 1- An option code is not required if the requirement is mandatory as stated within the part standard. 4.1.1.2 Sleeving Codes S
32、leeving code letters for each part standard shall be selected from ARP1785. SAE INTERNATIONAL ARP1590A Page 4 of 16_ 4.1.1.3 Size Codes Hose assembly and end fitting size codes shall be numeric or alphabetic. Sizes are codes in 0.0625 in increments. Sizes smaller than 10 (0.6250 in Dia) shall have t
33、he numeric code preceded by a zero (0). Example: 08 = 0.5000 in fitting 4.1.1.3.1 Hose assemblies less than 8000 psi operating pressure shall use size codes as shown in Table 2: TABLE 2 - HOSE SIZE CODES Hose or Fitting Size Numerical Size Code Alphabetical Size Code 0.1250 02 B 0.1875 03 C 0.2500 0
34、4 E 0.3125 05 F 0.3750 06 G 0.5000 08 H 0.6250 10 J 0.7500 12 K 1.0000 16 M 1.2500 20 N 1.5000 24 P 2.0000 32 R 4.1.1.3.2 Hose assemblies with 8000 psi operating pressure shall only use size codes as shown in Table 3: TABLE 3 - HOSE SIZE CODES FOR 8000 PSI Hose or Fitting Size Numerical Size Code Al
35、phabetical Size Code 0.1875 03 - 0.3125 05 - 0.4375 07 - 0.5625 09 - 0.6875 11 - 0.8125 13 - 0.9375 15 - Alphabetical size codes for 8000 psi have not been established. They may not be needed and if needed would be unique to the 8000 psi standard. 4.1.1.4 Length Code Hose assembly lengths shall be c
36、oded in inches and in 0.125 in increments. The length code shall always be four (4) digits long, the first three (3) digits in whole inches, using leading zeros when necessary, and the last digit in 0.125 of an inch, allowing for hose assemblies with lengths less than 1000 in. 4.1.1.5 Angular Orient
37、ation Codes Double elbow hose assemblies or other hose assemblies requiring end fitting orientation shall have a three (3) digit orientation code, coded in whole degrees. SAE INTERNATIONAL ARP1590A Page 5 of 16_ The fitting orientation dash number is a three digit number defining the relative positi
38、on of the end fittings in 1 degree increments (Example: 090 = 90 degrees). Fitting orientation shall be measured counterclockwise from the nearest end fitting which shall be in the relative 000 degree position (see Figure 2). When end fittings are pointing in the same direction, the dash number shal
39、l be “000”. FIGURE 2 FITTING ANGULAR ORIENTATION /11/ 4.1.2 Hose Assemblies Part Number Structure 4.1.2.1 Hose Assemblies With At Least One Straight End Fitting (15 Digits) XXXXXXX H 08 024 4 Additional length in 0.125 inch Increments (4 = 0.500 inch; use zero 0 if length is in whole inches). Length
40、 in whole inches (3 digits) Sleeving code per ARP1785 (use dash - if no sleeving). Hose assembly numeric size code in 0.0625 inch increments Option code letter (use dash - if no option. (See 4.1.1.1) Basic hose assembly standard (7 digits maximum) Defining: a. Type of hose assembly (basic constructi
41、on, materials, pressure rating, etc.) as covered by the applicable part specification. b. Style of hose assembly (end fitting configurations, including sealing technique). FIGURE 3 - 15 DIGIT PART NUMBER STRUCTURE FOR HOSE ASSEMBLIES WITH ONE STRAIGHT END FITTING SAE INTERNATIONAL ARP1590A Page 6 of
42、 16_ 4.1.2.2 Hose Assemblies With Elbow Fittings At Both Ends (15 Digits) NOTE: Because of part number length limitations, the option code is not available on these hose assemblies. XXXXXXX E 024 4 000 Angular orientation of end fittings in 1degree increments. (See 4.1.1.5) Sleeving code per ARP1785
43、 (use dash - if no sleeving). Additional length in 0.125 inch increments (4 = 0.500 inch; use zero 0 if length is in whole inches). Length in whole inches. (3 digits) Hose assembly size letter code. Basic hose assembly standard (6 digits maximum) Defining: a. Type of hose assembly (basic constructio
44、n, materials, pressure rating, etc.) as covered by the applicable part specification. b. Style of hose assembly (end fitting configurations, including sealing technique). FIGURE 4 - 15 DIGIT PART NUMBER STRUCTURE FOR HOSE ASSEMBLIES WITH ELBOW AT BOTH ENDS 4.1.2.3 Non-Reducing Hose Assemblies (19 Di
45、gits) XXXXXXX - 08 - 024 4 000 Angular orientation of end fittings in 1degree increments. (See 4.1.1.5) Option code letter (use dash - if no option. See 4.1.1.1) Additional length in 0.125 inch increments (4 = 0.500 inch; use zero (0) if length is in whole inches). Length in whole inches. (3 digits)
46、 Sleeving code per ARP1785 (use dash - if no sleeving). Hose assembly numeric size code in 0.0625 inch increments. Code separator Basic hose assembly standard (7 digits maximum) Defining: a. Type of hose assembly (basic construction, materials, pressure rating, etc.) as covered by the applicable par
47、t specification. b. Style of hose assembly (end fitting configurations, including sealing technique). FIGURE 5 - 19 DIGIT PART NUMBER STRUCTURE FOR NON-REDUCING HOSE ASSEMBLIES SAE INTERNATIONAL ARP1590A Page 7 of 16_ 4.1.2.4 Hose Assemblies With Reducer/Expander Fittings (19 Digits) XXXXXXX H J K 032 4 C 090 N Option code letter (omit if no option. See 4.1.1.1) Angular orientation of end fittings in 1degree increments. (See 4.1.1.5). Sleevi
