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Screw thread information


These links give you the opportunity to make your own Screw Thread Information Manual.
Simply print the pages you feel are relevant for your use. Link
0.02 Contents shows the same as this page.

Screw Thread Information & Tables

 0 INTRODUCTION
0.01  First Page
0.02  Contents
0.03  Introduction

 1 BASIC INFORMATION ON SCREW THREADS
1.01 THE MOST IMPORTANT DIMENSIONS ON A SCREW THREAD
1.02 SCREW THREAD TYPES AND THEIR USE

1.03 BASIC SCREW THREAD TOLERANCES AND THEIR SIGNIFICANCE
1.04 INFORMATION ON METRIC (M), AMERICAN (UNC) AND PIPE THREADS
1.05 THREAD ROOT TOLERANCE AREA FOR METRIC AND US (AMERICAN) UN THREADS
1.06 FLANK ANGLE TOLERANCES FOR METRIC AND UN (Unified Inch) THREADS

1.07 THREADS AND PITCHES
1.08 BORE DIAMETERS AND TOLERANCES FOR INTERNAL THREADS
1.09 SCREW THREAD FORMULA
1.10 THREAD PITCH DIAMETER TOLERANCE AREAS

 
2 NOMINAL PITCH DIAMETER (d2 / D2)

2.01 CALCULATING NOMINAL PITCH DIAMETER D2 / d2
2.02 NOMINAL PITCH DIAMETER  ( D2 og d2 ) FOR METRIC SCREW THREADS
2.03
INFORMATION  ON STANDARD M, UNC, WHITWORTH PIPE THREADS (G) & WHITWORTH
AND THEIR PITCH DIAMETER TOLERANCES
2.03.1 INFORMATION ON STANDARD THREADS AND THEIR PITCH DIAMETER TOLERANCES (INCH VERSION)

 3 PITCH DIAMETER TOLERANCES FOR NORMAL AND/OR STANDARD SCREW THREADS
3.0 PITCH DIAMETER TOLERANCES -  METRIC SCREW THREADS  Page 1 of 15

From M3 - M180 mm and pitches from 0,5 – 8 mm Pages 2 of 15 up to 15 of 15
 
3.1 METRIC (M) External d2
3.01.1 M-6g (standard)
3.01.2 M-4h
3.01.3
M-6e

3.01.4
M-6f

 
3.2 METRIC (M) Internal D2
3.02.1 M-6H (standard)
3.02.2 M-5H
3.02.3 M-6G
3.02.4
M-7H

3.3
ISO INCH (UNC, UNF) External
d2
3.03.1 UNC-1A
3.03.2
UNC-2A (standard)
3.03.3
UNC-3A
3.03.4
UNF-1A
3.03.5
UNF-2A (standard)
3.03.6
UNF-3A

3.03.7 UNEF-2A (standard)

3.03.8 UNEF-3A
3.4
ISO INCH (UNC, UNF) Internal
D2
3.04.1 UNC-1B
3.04.2
UNC-2B (standard)

3.04.3 UNC-3B
3.04.4 UNF-1B
3.04.5
UNF-2B (standard)

3.04.6
UNF-3B

3.04.7 UNEF-2B (standard)
3.04.8 UNEF-3B


3.05 ISO 228 PIPE THREADS BSP / G (WHERE PRESSURE-TIGHT JOINTS ARE NOT MADE ON THE THREADS)
3.06
TAPERED PIPE THREADS R, Rc & NPT – PITCH DIAMETER
3.07 AMERICAN PIPE THREADS 60O -
NPSM & NPSL
3.08
WHITWORTH THREADS – BSW & BSF

3.09 STEEL CONDUIT THREAD – Pg (Pr)
3.10 KNUCKLE THREAD – Rd
3.11 ISO METRIC TRAPEZOIDAL SCREW THREADS – Tr
3.12 ACME SCREW THREADS (2G, 3G and 4G)

 

 4 SCREW THREAD INSPECTION  & MEASUREMENT
4.01 ADVANTAGES & DISADVANTAGES USING DIFFERENT METHODS
4.02 WORTH KNOWING WHEN SCREW PLUG AND - RING GAUGES ARE USED FOR INSPECTION
4.03 MEASURING WITH WIRES

 5 COMPANY RELEVANT 
  
(screw thread information and/or tables can be made to specific wishes for a company)

 6 MISCELLANEOUS INFORMATION
 
6.1a Thread pitch diameter tolerances for standard threads
6.1b Flankendurchmessertoleranzen fūr Standardgewinde
6.1c Delediametertolerancer for standard gevind

6.2 Thread root area.pdf
6.3 Flank angle tolerances.pdf

Thread gauge tolerances. What to be on the lookout for when using them.
6.4 Thread gauge tolerances.pdf
A method for measuring the major diameter (D) on an internal thread and the minor diameter (d1) on an external thread
6.5 D and d1.pdf

Screw thread inserts for measuring diameters d1 and D
6.6 Measuring D and d1.pdf
A useful link for calculating metric thread tolerances
6.7 http://calc.homepage.dk/metricthread.htm