STETFS

"Screw Thread Engineering To Federal Standards"

 

  Standard and Special Gage and Product Dimensions To ASME, British, ISO and Federal Standards 
R.J.L.
1356 Bushey Hill Rd.
Newport, VT 05855-8838 U.S.A.
Tel. (802) 766-5162
Send email address and Company name to obtain an STETFS demo by email.
Email: stetfs@hughes.net
Stop wasting time going back and forth between documents calculating screw thread dimensions. STETFS provides standard and special screw thread dimensions in seconds instead of hours. Eliminate costly errors on gage and product thread calculations. Published formulas are used to provide thread data instead of using published figures from a database. One input provides gage and product dimensions for every thread type with STETFS software. Most typing is done by the program’s point too menu system. The only typing required is the nominal major diameter and number of threads per inch. The user then points to the rest of the thread data required in popup menu dialog boxes. The program then types the selected data eliminating costly typing errors. Coating allowances are provided for minimum and maximum coating thickness on product and gage threads. The Best, Exact or Optional over wire measurements are calculated for single and multiple start threads for each thread type. These programs allow the use of optional wire diameters when the best or exact wire diameters are not available. Several other options are available using the Edit options menu, such as altering the pitch diameters, changing product thread or gage tolerance class without having to repeat the data entry cycle. One input provides the required dimensions and tolerances for the internal and external product threads, as well as the dimensions and tolerances for working plug gages, setting plug gages, ring gages and minor diameter gages. STETFS is a Windows software and will runs with Windows 98, ME, XP, NT and Windows VISTA.
Program names and screw thread types:
ACME – Standard & special - general, centralizing, centralizing stub, stub, stub mod 1 & 2 and gages
ANSI – Standard & special American National Standard threads, All classes, product & gages
BUTTRESS - Standard & special American & British Buttress gage & product thread dimensions
BSI – British 55 degree parallel pipe thread gauge to ISO1502 & product threads to BS 2779
BSW – 55 degree Whitworth standard & special gage BS 919 & product threads to BS84
BTPT – British 55 degree standard taper pipe thread gauge to ISO 7/2 & product threads to BS21
ISOMET – Standard & special Metric product threads to B1.13M & J threads to B1.21M, gauges to ISO1502
ISOPPT – ISO 228/1-parallel pipe thread product and ISO 228/2 parallel pipe thread gauges
ISOTPIPE – ISO 7/1 Taper pipe thread product and ISO 7/2 taper pipe thread gauges.
MEASURE – Measurement of all pressure angle threads, including 55° parallel & tapered pipe threads.
             MJBUTRES - 7° x 45° Metric MJ Buttress product to SAE MA1696 & gauges to ISO1502
METRIC – Standard & special Metric gage & product threads to ASME standards – Metric STI gages
PIPETHRD – Standard American National taper pipe thread gage & product threads
STIGAGE – Unified standard & special thread insert working plug gages, all classes & diameters
STUB60° - Standard & special 60° Unified stub threads to ASME B1.1 & Mil standards
TR – Standard & special Trapezoidal gage and product threads to ISO standards
UNIFIED – Standard & special product threads to ASME B1.1 and gages to ASME B1.2
UN2003 – Standard & special Unified product and gage threads to ASME B1.1 – 2003 & gages to B1.2
VOGEL – Lead angle compensation measurements for all equal pressure angle, single or multiple start threads

Example of program menu dialog boxes and commands.

 

 The Calculate menu is the first menu dialog to open when a program is opened. The instructions are listed at the bottom of each menu dialog box for steps required when engineering threads. The program moves to the next dialog box for the required item when the user presses Enter or clicks on OK. The program types the information selected by the user. The user then selects the view or print item menu when all required steps are completed to view or print the thread gauge or product dimensions. Telephone (802) 766-5162 for price information or how to place an order for STETFS. Free technical support and file updates. Your email address is required to receive free file updates by email when changes are required in a program because of document updates.