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Self-Locking Nut Standards

These standards from ISO and SAE cover self-locking nut requirements.

 General Standards for Self-Locking Nuts
 Self-Locking Fixed Nuts
 Self-Locking Floating Nuts
 Self-Locking Clinch Nuts
 Self-Locking Hex and Spline Nuts
 Nickel Alloy Self-Locking Nuts
 Steel Alloy Self-Locking Nuts
 Iron Alloy Self-Locking Nuts

General Standards for Self-Locking Nuts

SAE ARP 1515B-2018

Threaded Fastener Protrusion Through Self-Locking Nuts

SAE AS 4847B-2018

Shank Nuts, Captive Blind Fastener,Mating Retaining Flange,Design Standard For

ISO 12280:1999

Aerospace -- Retainers, spring, sheet metal, for self-locking barrel nuts -- Dimensions

ISO 5858:1999

Aerospace -- Nuts, self-locking, with maximum operating temperature less than or equal to 425 degrees C -- Procurement specification

ISO 7481:2000

Aerospace - Nuts, self-locking, with maximum operating temperature less than or equal to 425 degrees C - Test methods

ISO 8641:2008

Aerospace - Self-locking nuts with maximum operating temperature greater than 425 degrees C - Procurement specification

ISO 8642:2008

Aerospace - Self-locking nuts with maximum operating temperature greater than 425 degrees C - Test methods

Self-Locking Fixed Nuts

ISO 3168:1998

Aerospace - Nuts, anchor, self-locking, fixed, single lug, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature )/235 degrees C, 1 100 MPa (at ambient temperature )/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 3191:1998

Aerospace - Nuts, anchor, self-locking, fixed, single lug, reduced series, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 3223:1998

Aerospace - Nuts, anchor, self-locking, fixed, two lug, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature )/235 degrees C, 1 100 MPa (at ambient temperature )/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 3225:1998

Aerospace - Nuts, anchor, self-locking, fixed, two lug, reduced series, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 9156:1998

Aerospace - Nuts, anchor, self-locking, fixed, 90 degrees corner, reduced series, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 3221:1998

Aerospace - Nuts, anchor, self-locking, fixed, 90 degrees corner, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 3222:1998

Aerospace - Nuts, anchor, self-locking, fixed, closed corner, reduced series, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

Self-Locking Floating Nuts

ISO 12277:2000

Aerospace -- Gang channel, self-locking, floating, standard series, with counterbore, classifications: 1 100 MPa (at ambient temperature) / 120 degrees C, 1 100 MPa (at ambient temperature) / 235 degrees C and 1 100 MPa (at ambient temperature) / 425 degrees C -- Dimensions

ISO 12278:1999

Aerospace -- Nuts, barrel, self-locking, floating, self-aligning, with MJ threads, classifications: 900 MPa (at ambient temperature) / 235 degrees C, 1100 MPa (at ambient temperature) / 235 degrees C, 1250 MPa (at ambient temperature) / 235 degrees C and 1550 MPa (at ambient temperature) / 235 degrees C -- Dimensions

ISO 12272:1998

Aerospace - Nuts, anchor, self-locking, floating, two lug, with incremental counterbore, with MJ threads classifications: 900 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/315 degrees C and 900 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 12273:2010

Aerospace - Nuts, anchor, self-locking, floating, self-aligning, two lug, with MJ threads, classifications: 900 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/315 degrees C and 900 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 12274:1997

Aerospace - Nuts, anchor, self-locking, floating, self-aligning, single lug, with MJ threads, classifications: 900 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/315 degrees C and 900 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 3209:2016

Aerospace - Nuts, anchor, self-locking, floating, two lug, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature )/235 degrees C, 1 100 MPa (at ambient temperature )/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 3224:1998

Aerospace - Nuts, anchor, self-locking, floating, single lug, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature )/235 degrees C, 1 100 MPa (at ambient temperature )/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 7332:1998

Aerospace - Nuts, anchor, self-locking, floating, two lug, reduced series, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 8940:2002

Aerospace - Nuts, anchor, self-locking, sealing, floating, two-lug, with counterbore, with MJ threads, classifications: 900 MPa (at ambient temperature)/120 degrees C, 900 MPa (at ambient temperature)/175 degrees C and 900 MPa (at ambient temperature)/235 degrees C - Dimensions

Self-Locking Clinch Nuts

SAE AS 4389A-2019

Nut - Self-Locking Clinch, Serrated Shank, Hole Preparation, Installation and Removal Procedures

SAE AS 3272A-2014 (SAE AS3272A-2014)

NUT - SELF-LOCKING, CLINCH, SERRATED SHANK, 700 ┬░F, DRY FILM COATED, UNS S66286, UNJ THREAD

SAE AS 3273A-2014 (SAE AS3273A-2014)

NUT - SELF-LOCKING, CLINCH, SERRATED SHANK, 1200 ┬░F, SILVER PLATED, UNS S66286, UNJ THREAD

SAE MA 3274A-2019

Nut - Self-Locking, Clinch, Serrated Shank, 400 °C, Dry Film Coated, UNS S66286, MJ Thread, Metric

SAE MA 3275A-2019

Nut - Self-Locking, Clinch, Serrated Shank, 650 °C, Silver Plated, UNS S66286, MJ Thread, Metric

Self-Locking Hex and Spline Nuts

ISO 13589:1998

Aerospace - Nuts, bihexagonal, self-locking, with counterbore and MJ threads, classifications: 1 100 MPa (at ambient temperature)/425 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/425 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 550 MPa (at ambient temperature)/235 degrees C, 1 550 MPa (at ambient temperature)/425 degrees C and 1 550 MPa (at ambient temperature)/600 degrees C - Dimensions

ISO 8538:1999

Aerospace - Nuts, hexagonal, self-locking, with counterbore and captive washer, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C and 1 100 MPa (at ambient temperature)/425 degrees C - Dimensions

ISO 9157:2002

Aerospace - Nuts, spline-drive, self-locking, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/425 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/425 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 550 MPa (at ambient temperature)/235 degrees C, 1 550 MPa (at ambient temperature)/425 degrees C and 1 550 MPa (at ambient temperature)/600 degrees C - Dimensions

ISO 9199:1998

Aerospace - Nuts, bihexagonal, self-locking, MJ threads, classifications: 1 100 MPa (at ambient temperature)/425 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/425 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 550 MPa (at ambient temperature)/235 degrees C, 1 550 MPa (at ambient temperature)/425 degrees C and 1 550 MPa (at ambient temperature)/600 degrees C - Dimensions

Nickel Alloy Self-Locking Nuts

SAE AS 4417A-2014 (SAE AS4417A-2014)

Nuts, Self-Locking, Alloy, Corrosion and Heat Resistant, High Strength, All Metal, Solid Film Lubricated, 1400 ┬░F, Procurement Specification

SAE AS 5878-2005 (SAE AS5878-2005)

Nut, Self-Locking, Nickel Alloy, UNS N07001, 1400 \uoF, 180,000 psi, UNJ Thread Procurement Specification

SAE AS 7253C-2015 (SAE AS7253C-2015)

Nuts, Self-Locking, Nickel Alloy, UNS N07001 Classification: 180 ksi/1400 ┬░F Procurement Specification

SAE MA 1943B-2018

Nuts, Self-Locking, UNS N07001, 730 ░C, 1100 MPa, and 1210 MPa, Procurement Specification for, Metric

Steel Alloy Self-Locking Nuts

SAE AS 1371A-2015 (SAE AS1371A-2015)

Nuts, Self-Locking, Corrosion Resistant Steel, High Strength, Prevailing Torque, All Metal, 800┬░F (427┬░C) Use, UNJ Thread Form (Stabilized: Jan 2015)

SAE AS 4726A-2017

Nuts, Self-Locking, UNS S66286 Classification: 220 ksi/850 ░F Procurement Specification

SAE AS 4958A-2013 (SAE AS4958A-2013)

Performance, Nut, Self-Locking, Castellated, Prevailing Torque, UNJ 16 Pitch Thread Form

SAE AS 7250D-2013 (SAE AS7250D-2013)

Nuts, Self-Locking, Steel, Corrosion and Heat Resistant High Strength, All Metal 1200 ┬░F Use, UN Thread Form

SAE AS 7251C-2014 (SAE AS7251C-2014)

Nuts, Self-Locking, Steel, Corrosion and Heat Resistant High Strength, All Metal 1200 ┬░F Use, UNJ Thread Form

SAE AS 7252A-2015 (SAE AS7252A-2015)

Nuts, Self-Locking, Steel High Strength, All Metal 450 ┬░F Use, UN and UNJ Thread Form

SAE MA 1568A-2018

Nut, Self Locking - UNS S66286, 425░C & 650░C, 1100 MPa, MJ Thread, Procurement Specification For, Metric

SAE MA 1573B-2021

Nut, Self-Locking - Steel, Class 1100 MPa/235 °C, MJ Thread Procurement Specification For, Metric

Iron Alloy Self-Locking Nuts

SAE AS 4393C-2015 (SAE AS4393C-2015)

Nut, Self-Locking, UNS S66286, 1200 ┬░F, 160,000 psi, UNJ Thread

SAE AS 5377-2000 (SAE AS5377-2000)

Nut, self-locking, 0.7500 thru 1.5000 thread sizes, UNS S66286, 160,000 psi, 800\mDF, UNJ thread~Procurement specification ( Reaffirmed: Jul 2004 )

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