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Standardized Threading for Screws and Bolts

These standards from ISO and SAE cover Standardized Threading for Screws and Bolts requirements sorted by threading.

 General Purpose Screw Threads
 General Terminology and Methods
 Aerospace Screw Threads

General Purpose Screw Threads

ISO 68-1:1998

ISO general purpose screw threads - Basic profile - Part 1: Metric screw threads

ISO 68-2:1998

ISO general-purpose screw threads - Basic profile - Part 2: Inch screw threads

ISO 724:1993

ISO general-purpose metric screw threads - Basic dimensions

ISO 724/Cor1:2009

ISO metric screw threads - Basic dimensions - Corrigendum

ISO 1502:1996

ISO general-purpose metric screw threads - Gauges and gauging

ISO 261:1998

ISO general-purpose metric screw threads - General plan

ISO 262:1998

ISO general-purpose metric screw threads - Selected sizes for screws, bolts and nuts

ISO 885:2000

General purpose bolts and screws - Metric series - Radii under the head

ISO 965-1:2013

ISO general purpose metric screw threads - Tolerances - Part 1: Principles and basic data

ISO 965-2:1998

ISO general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose external and internal screw threads - Medium quality

ISO 965-3:2021

ISO general purpose metric screw threads - Tolerances - Part 3: Limit deviations for screw threads

ISO 965-3/Cor1:2009

ISO general purpose metric screw threads - Tolerances - Part 3: Deviations for constructional threads - Corrigendum

ISO 965-4:2021

ISO general purpose metric screw threads - Tolerances - Part 4: Limits of sizes for hot-dip galvanized external screw threads to mate with internal screw threads tapped with tolerance position H or G after galvanizing

ISO 965-5:1998

ISO general purpose metric screw threads - Tolerances - Part 5: Limits of sizes for hot-dip galvanized internal screw threads to mate with external threads with maximum size of tolerance position h before galvanizing

General Terminology and Methods

ISO 5408:2009

Screw threads - Vocabulary

ISO 888:2012

Fasteners - Bolts, screws and studs - Nominal lengths and thread lengths

ISO 725:2009

ISO inch screw threads - Basic dimensions

ISO 5864:1993

ISO inch screw threads - Allowances and tolerances

ISO 4753:2011

Fasteners - Ends of parts with external ISO metric thread

ISO 4755:1983

Fasteners - Thread undercuts for external metric ISO threads

ISO 3508:1976

Thread run-outs for fasteners with thread in accordance with ISO 261 and ISO 262

ISO 1501:2009

ISO miniature screw threads

ISO 263:1973

ISO inch screw threads - General plan and selection for screws, bolts and nuts - Diameter range 0.06 to 6 in

ISO 2901:2016

ISO metric trapezoidal screw threads - Basic and design profiles

ISO 2902:2016

ISO metric trapezoidal screw threads - General plan

ISO 2903:2016

ISO metric trapezoidal screw threads - Tolerances

ISO 2904:2020

ISO metric trapezoidal screw threads - Basic dimensions

ISO 6410-1:1993

Technical drawings - Screw threads and threaded parts - Part 1: General conventions

ISO 6410-2:1993

Technical drawings - Screw threads and threaded parts - Part 2: Screw thread inserts

ISO 6410-3:2021

Technical drawings - Screw threads and threaded parts - Part 3: Simplified representation

Aerospace Screw Threads

ISO 5855-1:1999

Aerospace -- MJ threads -- Part 1: General requirements

ISO 5855-2:1999

Aerospace -- MJ threads -- Part 2: Limit dimensions for bolts and nuts

SAE J 48-2017

Guidelines for Liquid Level Indicators

SAE AS 1132K-2021

Bolts, Screws, and Nuts - External Wrenching UNJ Thread, Inch - Design Standard

SAE AS 1338A-2014 (SAE AS1338A-2014)

Aerospace Metric 60┬░ Screw Thread Profile and Tolerance Classes (Stabilized: Sep 2014)

SAE AS 3062D-2019

Bolts, Screws, and Studs - Screw Thread Requirements

SAE AS 82C-2018

Screw Thread Form, American National, Modified (National Round - NR)

SAE AS 8879D-2004 (SAE AS8879D-2004)

Screw Threads - UNJ Profile, Inch Controlled Radius Root with Increased Minor Diameter

SAE AS 1421A-2010 (SAE AS1421A-2010)

Aerospace Selected Diameter - Pitch Combinations of Metric 60┬░ Screw Threads for Shaft or Bearing Retaining Screw Threads (Cancelled: Nov 2010)

SAE MA 1421A-2018

Aerospace Selected Diameter-Pitch Combinations of Metric 60░ Screw Threads for Shaft or Bearing Retaining Screw Threads

SAE MA 1508-1996 (SAE MA1508-1996)

Undercuts for Straight Screw Threads - Metric ( Reaffirmed: Oct 2001 May 2006 )

SAE MA 1566B-2018

Gaging Practice and Gage Requirements for MJ Metric Screw Threads

SAE MA 1696B-2019

Screw Threads, Metric Buttress - MJB Profile

SAE AS 1337A-1974 (SAE AS1337A-1974)

Selected Aerospace Diameter-Pitch Combinations of Metric 60~ Screw Threads for Nuts and Bolts ( Reaffirmed: Mar 1982 Jul 1991 May 1995 Oct 2001 May 2006 )

SAE J 429-2014 (SAE J429-2014)

Mechanical and Material Requirements for Externally Threaded Fasteners

SAE AIR 1551B-2014 (SAE AIR1551B-2014)

Torque Tightening Metric Screw Threaded Fasteners (Stabilized: Jul 2014)

SAE J 121-2013 (SAE J121-2013)

Decarburization in Hardened and Tempered Unified Threaded Fasteners (Cancelled: Jan 2013)

SAE J 121M-2013 (SAE J121M-2013)

Decarburization in Hardened and Tempered Metric Threaded Fasteners (Cancelled: Jan 2013)

SAE MA 1520B-2019

Areas for Calculating Stress or Load Values for Metric MJ Externally Threaded Fasteners

SAE MA 4284A-2019

Areas for Calculating Stress or Load Values for Metric MJ Internally Threaded Fasteners

SAE MA 1370-1990 (SAE MA1370-1990)

Screw Threads - MJ Profile, Metric ( Reaffirmed: May 1995 Oct 2001 May 2006 )

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