Industry Standard for Lock Nuts

Industry Standard for Lock Nuts, Total:226 items.

The international standard classification for "Industry Standard for Lock Nuts" includes: Nuts , Nuts , Flanges, couplings and joints , Rolling bearings , Rings, bushes, sleeves, collars , Road vehicle systems , Components for aerospace construction .

The Chinese standard classification for "Industry Standard for Lock Nuts" includes: Fasteners , Fastener , Pipe fittings, clamps and seals , Universal parts , Pipeline fittings , Rolling bearing , Gear and gear drive , Fasteners , Mining equipment .

Professional Standard - Aviation

HB 5953-1986 Nylon Insert Hex Lock Nuts
HB 6073-1986 fasten the screw nut
HB 5786-1983 fasten the screw nut
HB 4-46-1976 fasten the screw nut
HB 5956-1986 Nylon Insert Hex Lock Thin Nut
HB 6075-1986 fasten the screw nut
HB 6074-1986 fasten the screw nut
HB 4-46-1983 fasten the screw nut
HB 6073-1996 fasten the screw nut
HB 6-90-1979 Aviation instrument case self-locking nut (trial)
HB 5961-1986 Technical Specification for Locknut with Nylon Inserts
HB 5784-1983 fasten the screw nut
HB 5783-1982 fasten the screw nut
HB 8124-2002 Nut locking titianium alloy
HB 315-1987 Circular Nut with Lock Groove
HB 6075-2008 Nut, locking, for flareless tube connection, 21MPa
HB 6074-2008 Nut, locking, for flareless tube connection, 21MPa
HB 5958-1986 Nylon Insert Hex Lock Thin Nut
HB 315-1971 Garden nut with locking groove
HB 5951-1986 Hexagon Locknut with Nylon Inserts
HB 6075-1996 fasten the screw nut
HB 6074-1996 fasten the screw nut
HB 5959-1986 Nylon Insert Hex Lock Thin Nut
HB 5785-1983 fasten the screw nut
HB 5954-1986 Nylon Insert Hex Lock Nuts
HB 5960-1986 Hexagon Flange Locknut with Nylon Inserts
HB 6073～6075-1996 fasten the screw nut
HB 4-46-2002 Nut locking
HB 6073-2008 Nut, locking, for flareless tube connection, 21MPa
HB 5952-1986 Nylon Insert Hex Lock Nuts
HB 5957-1986 Nylon Insert Hex Lock Thin Nut
HB 7876-2008 Locknut for connection of flaring-free duct (28 MPa)
HB 5783-1983 fasten the screw nut
HB 5955-1986 Nylon Ring of Hexagon Locknut with Nylon Inserts
HB 4-46-1999 fasten the screw nut

Military Standard of the People's Republic of China-General Armament Department

GJB 859.37-1990 fasten the screw nut
GJB 715.4-1990 Fastener test method pallet self-locking nut introduction

Professional Standard - Railway

TB/T 826-1991 Locknut

Professional Standard - Machinery

JB/T 1700.2-1991 Lock nut (2)
JB/T 7919.3-1999 Rolling bearings.Accessories.Locknuts and locking devices
JB/ZQ 4759-2006 Locknut - Trapezoidal thread
JB/T 1700.1-1991 Lock nut (1)
JB/T 6545-1993 All Metal Spring Band Hex Lock Nuts
JB/T 6545-2007 Hexagon check nuts with full metal spring ring

机械电子工业部

JB 1700.2-1991 Locking nut(2)
JB 1700.1-1991 Locking nut(1)

Professional Standard - Nuclear Industry

EJ 30-1975 Outrigger lock nut

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 3098.9-2002 Mechanical properties of fasteners--Prevailing torque type steel hexagon unts
GB/T 6187.2-2000 Prevailing torque type all-metal hexagon nuts with flange with fine pitch thread
GB/T 889.2-2000 Prevailing torque type hexagon nuts (with non-metallic insert),style 1,with fine pitch thread
GB/T 5649-2008 Flared couplings - Lock nut and lockup washer
GB/T 6186-2000 Prevailing torque type all-metal hexagon nuts,style 2-Property class 9
GB/T 6172.2-2000 Prevailing torque type hexagon thin nuts (with non-metallic insert)
GB/T 6182-2016 Prevailing torque type hexagon nuts (with non-metallic insert), style 2
GB/T 889.1-2015 Prevailing torque type hexagon nuts (with non-metallic insert)，style 1
GB/T 6187.1-2000 Prevaling torque type all-metal hexagon with flange
GB/T 6184-2000 Prevailing torque type all-metal hexagon nuts,style 1
GB/T 6182-2010 Prevailing torque type hexagon nuts(with non-metallic insert),style 2
GB/T 6187.1-2016 Type 2 all-metal hexagon nuts with flange
GB/T 6183.1-2000 Prevailing torque type hexagon nuts with flange (with non-metallic insert)
GB/T 6185.1-2016 Prevailing torque type hexagon nuts with flange( with non-metallic insert), style 2
GB/T 5652-1985 Flared type tube fittings; Back-up washer
GB/T 889.1-2000 Prevailing torque type hexagon nuts (with non-metallic insert),style 1
GB/T 3098.9-2010 Mechanical properties of fasteners—Prevailing torque type steel nuts
GB/T 6185.2-2016 Prevailing torque type all-metal hexagon nuts with flange, style 2—Fine pitch thread
GB/T 6182-2000 Prevailing torque type hexagon nuts (with non-metallic insert),style 2
GB/T 6185.1-2000 Prevailing torque type all-metal hexagon nuts,style 2
GB/T 9160.2-2006 Rolling bearings-Accessories-Locknuts and locking devices
GB/T 5649-1985 Flared type tube fittings--Locknut
GB/T 5649-2008(英文版) Flared couplings—Lock nut and lockup washer
GB/T 6185.2-2000 Prevailing torque type all-metal hexagon nuts,style 2,with fine pitch thread
GB/T 6172.2-2016 Prevailing torque type hexagon thin nuts(with non-metallic insert)
GB/T 889.2-2016 Prevailing torque type hexagon nuts(with non-metallic insert),Style 1--Fine pitch thread

Professional Standard - Automobile

QC/T 885-2011 B type spring nuts - prevailing torque type
QC/T 888-2011 All - metal hexagon collar weld nuts - prevailing torque type

未注明发布机构

DIN EN ISO 2320 E:2014-06 Fastener Effective Torque Locking Steel Nut Functional Characteristics (Draft)
DIN 981:1983 Rolling bearings; locknuts
DIN 981 E:2008-08 Rolling bearings; locknuts

工业和信息化部

QC/T 1103-2019 12-point head heat resistant nuts

Professional Standard - Aerospace

QJ 2418-1992 MJ Threaded Fastener - Self-locking Nuts with Double-lug Anchor at 1100mpa / 235 ℃
QJ 2410-1992 MJ Threaded Fastener 1100mpa/235℃ Single Lug Support Plate Self-locking Nut
QJ 2412-1992 MJ Threaded Fastener 1100mpa/235℃ Double-lug Support Plate Self-locking Nut
QJ 2417-1992 MJ Threaded Fastener - Self-locking Nuts with Single Anchor at 1100mpa / 235 ℃
QJ 2393-1992 Hexagon Locknuts for Non-Metal Inserts
QJ 2889.17-1997 37° Conduit Connector - Type and Size of Locknut
QJ 2414-1992 MJ Threaded Fastener 1100mpa/235℃ 90°Anglar Support Plate Self-locking Nut
QJ 2420-1992 MJ Threaded Fastener - Hexagon Self-locking Nuts at 1100mpa / 235 ℃
QJ 1896.2-1990 24° Conduit Connector Lock Nut

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会

GB/T 9160.2-2017 Rolling bearings―Accessories―Part 2:Locknuts and locking devices

Professional Standard - Military and Civilian Products

WJ 337-1982 Machine tool fixture parts and component lock nuts

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 3098.9-2020 Mechanical properties of fasteners—Prevailing torque type steel nuts

机械工业部

JB/T 7919.7-1995 Technical specifications for rolling bearing accessories tapered bushings, lock nuts and lock washers

Professional Standard - Coal

MT/T 187.8-1988 Scraper conveyor fastener hexagonal self-locking nut
MT/T 187.8-1991 Scraper conveyor fasteners non metallic insert six angle locking nut

CZ-CSN

CSN 02 1491-1961 Look nut
CSN ONA 30 9415-1964 Bicycles Loclc nut of Bracket assembly

SCC

NS 5251:1972 Palnuts, self locking counternuts, metric
CSA B18.2.4.5-M1980-1980 Metric Hex Jam Nuts
ASME B18.2.4.5M-1979(R2003) Metric Hex Jam Nuts
BS ISO 2982-2:1995 Rolling bearings. Accessories-Locknuts and locking devices. Dimensions
BS ISO 2982-2:2001 Rolling bearings. Accessories-Locknuts and locking devices. Dimensions
12/30259911 DC BS ISO 2982-2. Rolling bearings. Accessories. Dimensions for locknuts and locking devices

Association Francaise de Normalisation

NF E25-540:2010 Fasteners - Nut lock.
NF E25-540:2002 Fasteners - Nut lock.
NF J65-120:1958 Shipbuilding. Shaft lines. Principles for locking of propeller nuts.
NF E27-614:1980 Fasteners. Nut lock.
NF E27-215:1976 Locking screws with hexagon nut.
NF EN ISO 2320:2016 Fixations - Écrous autofreinés en acier - Caractéristiques fonctionnelles
NF L22-533:1975 Self-locking anchor nuts, countersunk type, two lugs. Sim thread (rech.).
NF E22-308-2:1997 Rolling bearings. Accessories. Part 2 : locknuts and locking devices. Dimensions.
NF E27-214:1976 Locking screw with violin type thumb nut.
NF L22-437:1987 HEXAGONAL NUTS. REDUCED HEIGHT. NORMAL ACROSS FLATS,WITH LOCKING HOLES. ISO RH THREAD. 4H5H OR 5H TOLERANCE CLASS ACCORDING TO DIAMETER.
NF L22-438:1987 HEXAGONAL NUTS. REDUCED HEIGHT. NORMAL ACROSS FLATS,WITH LOCKING HOLES. ISO LH THREAD. 4H5H OR 5H TOLERANCE CLASS ACCORDING TO DIAMETER.
NF L22-500/AM1:1974 Internal locking nuts for temperatures below 425°C. Product standards
NF L22-461:1987 HEXAGONAL NUTS. REDUCED HEIGHT. NORMAL ACROSS FLATS WITH LOCKING HOLES. ISO RH THREAD,4H5H CLASS,FINE PITCH.

ESDU - Engineering Sciences Data Unit

ESDU 14002-2012 Lock nuts and other thread locking devices
ESDU 87023-1987 Lock nuts and other thread locking devices.

SE-SIS

SIS SMS 380-1946 bike. Steering assembly with clamping clamp. fasten the screw nut

Korean Agency for Technology and Standards (KATS)

KS B 1045-2009(2019) Lock nuts for machine tools
KS B 2004-2017(2022) Rolling bearings — Locknuts, lockwashers and lockplates
KS B 2004-1982 Rolling bearings — Locknuts, lockwashers and lockplates
KS B 1045-2019 Lock nuts for machine tools
KS B 2004-1997 Rolling bearings — Locknuts, lockwashers and lockplates
KS B 2004-2022 Rolling bearings — Locknuts, lockwashers and lockplates
KS B 2004-2017 Rolling bearings — Locknuts, lockwashers and lockplates
KS C 8404-1988 Lock nut (FOR ELECTRIC CONDUIT PIPE)
KS W 1610-2003(2013) Nuts, self-locking aircraft, general specification for
KS W 1523-1990(2000) SELF-LOCKING NUTS FOR AIRCRAFT ENGINES(650℃)
KS B 2004-2007 Rolling bearings-Locknuts, lockwashers and lockplates
KS W 1522-2001(2011) Self-locking nuts for aircraft(thin)

Aerospace Industries Association/ANSI Aerospace Standards

AIA/NAS NASM45938/11-2012 NUT, PLAIN, CLINCH AND NUT, SELF-LOCKING, CLINCH (FLOATING, 400 °F)
AIA/NAS NASM45938/14-2012 NUT, PLAIN, CLINCH AND NUT, SELF-LOCKING, CLINCH, SELF-CLINCHING, KNURLED COLLAR, FLOATING, 450 °F AND 600 °F
AIA/NAS NAS1493-2016 LOCKNUT, BEARING RETAINING (Rev 8)
AIA/NAS NAS1493-2011 LOCKNUT, BEARING RETAINING (Rev 7)

Society of Automotive Engineers (SAE)

SAE AGS207-12-2015 AGS207 Union Lock Nuts. (Steel)
SAE AGS1710-5-1962 AGS1710 Locknut L.T. Union
SAE AGS224-12-1938 AGS224 Union Lock Nuts. (Brass)
SAE AGS957-6-1936 AGS957 Union Lock Nuts (Light Alloy)
SAE ARP1515-1995 THREADED FASTENER PROTRUSION THROUGH SELF-LOCKING NUTS
SAE ARP1515A-2012 Threaded Fastener Protrusion Through Self-Locking Nuts
SAE AS172236A THRU AS172270A-2003 Nut, Spanner, Bearing Retaining, Aeronautical, UNS G41400
SAE AS3262B-2013 Nut, Self-Locking, Plate-2 Lug, Floating, Counterbored, UNS S66286
SAE ARP1515A-2001 Threaded Fastener Protrusion Through Self-Locking Nuts
SAE AS3535A-2007 (R) Nut, Self-Locking, Shank, UNS N07001 Silver Plate, UNJ Thread
SAE AS3535B-2014 NUT@ SELF-LOCKING@ SHANK@ UNS N07001 SILVER PLATE@ UNJ THREAD
SAE AS3291A-2013 Nut, Self-Locking, Double Hexagon, AMS5709 (UNS N07001), 180 KSI
SAE AS3272-2-1950 AS3272 Union Locknut - Filter Fuel. Type 'B'
SAE AS9951-2020 NUT, SPANNER-END SLOTS, CUPWASHER LOCKED ALLOY STEEL (UNS G87400) AS8879 THREADS
SAE AS95234/7-2019 CONNECTOR, RECEPTACLE, REVERSE BAYONET COUPLING, JAM NUT

German Institute for Standardization

DIN 70952:1976-05 Locking plates for groove nuts DIN 70852
DIN 981:2009-06 Rolling bearings - Locknuts
DIN 981:1993 Rolling bearings; locknuts
DIN 70952:1976 Locking plates for groove nuts DIN 70852
DIN 65391:2002-11 Aerospace - Press nuts with MJ thread, self-locking, corrosion-resisting steel; Classification: 1100 MPa/315 °C/425 °C
DIN 65392:2002-11 Aerospace - Press nuts with MJ thread, self-locking, floating, steel; Classification: 1100 MPa/235 °C

RU-GOST R

GOST 12460-1967 Nuts with lock screws. Design
GOST 8961-1975 Ductile iron fittings with parallel thread for pipelines. Locknuts. Basic dimensions

ZA-SANS

SANS 1700-15-8:1998 Fasteners Part 15: Prevailing torque type nuts Section 8: Prevailing torque type hexagon thin nuts (with non-metallic insert)
SANS 1700-15-6:1998 Fasteners Part 15: Prevailing torque type nuts Section 6: Prevailing torque type all-metal hexagon nuts, style 1 - Property classes 5, 8 and 10
SANS 1700-15-7:1998 Fasteners Part 15: Prevailing torque type nuts Section 7: Prevailing torque type all-metal hexagon nuts, style 2 - Property class 9
SANS 1700-15-3:1998 Fasteners Part 15: Prevailing torque type nuts Section 3: Prevailing torque type all-metal hexagon nuts, style 2 - Property classes 5, 8, 10 and 12
SANS 1700-15-2:2007 Fasteners Part 15: Prevailing torque type nuts Section 2: Prevailing torque type hexagon nuts (with non-metallic insert), style 2 - Property classes 9 and 12
SANS 1700-15-5:1998 Fasteners Part 15: Prevailing torque type nuts Section 5: Prevailing torque type all-metal hexagon nuts with flange - Product grades A and B
SANS 1700-15-10:1998 Fasteners Part 15: Prevailing torque type nuts Section 10: Prevailing torque type all-metal hexagon nuts, style 2, with metric fine pitch thread - Property classes 8, 10 and 12
SANS 1700-15-4:1998 Fasteners Part 15: Prevailing torque type nuts Section 4: Prevailing torque type hexagon nuts with flange (with non-metallic insert) - Product grades A and B
SANS 1700-15-12:1998 Fasteners Part 15: Prevailing torque type nuts Section 12: Prevailing torque type all-metal hexagon nuts with flange with metric fine pitch thread - Product grades A and B
SANS 1700-15-9:1998 Fasteners Part 15: Prevailing torque type nuts Section 9: Prevailing torque type hexagon nuts (with non-metallic insert), style 1, with metric fine pitch thread - Property classes 6, 8 and 10
SANS 1700-15-11:1998 Fasteners Part 15: Prevailing torque type nuts Section 11: Prevailing torque type hexagon nuts with flange (with non-metallic insert) with metric fine pitch thread - Product grades A and B

AIA/NAS - Aerospace Industries Association of America Inc.

NASM45938/11-1999 Nut@ Plain@ Clinch and Nut@ Self-Locking@ Clinch (Floating@ 400 Degrees F
NASM45938/3-1999 Nut@ Plain@ Clinch and Nut@ Self-Locking@ Clinch (Self Clinching@ Knurled Collar@ 450 Degrees F and 600 Degrees F)
NAS1493-2016 LOCKNUT@ BEARING RETAINING (Rev 8)
NAS1493-2011 LOCKNUT@ BEARING RETAINING (Rev 7)
NAS1493-1991 Locknut Bearing Retaining (Rev 6)
NASM45938/14-1999 Nut@ Plain@ Clinch and Nut@ Self-Locking@ Clinch (Self-Clinching@ Knurled Collar@ Floating@ 450 Degrees F and 600 Degrees F)
NAS1726-2016 NUT@ SELF-LOCKING@ CAPTIVE WASHER@ SHEAR TYPE@ 450 °F AND 800 °F (Rev 5)
NAS1726-2011 NUT@ SELF-LOCKING@ CAPTIVE WASHER@ SHEAR TYPE@ 450 °F AND 800 °F (Rev 2)
NASM45938/13-1999 Nut@ Plain@ Clinch and Nut@ Self-Locking@ Clinch (Self-Clinching@ Knurled Collar@ Miniature@ Floating@ 450 Degrees F and 600 Degrees F)
NASM45938/5-1999 Nut@ Self-Locking@ Clinch@ (Swage-Clinching@ Knurled Shank@ Miniature@ 250 Degrees F)

RO-ASRO

STAS 7029-1970 HEXAGON LOCK NUTDimensions

American Society of Mechanical Engineers (ASME)

ASME B18.2.4.5M-1979 Metric hex jam nuts
ASME B18.2.4.5M-2008 Metric Hex Jam Nuts
ASME B18.2.4.5M Errata-1981 Metric hex jam nuts; Errata
ASME B18.16.6-2017(R2022) Prevailing Torque Locknuts (Inch Series)
ASME B16.14-1991 Ferrous pipe plugs, bushings, and locknuts with pipe threads
ASME B16.14-2010 Ferrous Pipe Plugs, Bushings, and Locknuts with Pipe Threads
ASME B16.14-2013 Ferrous Pipe Plugs@ Bushings@ and Locknuts with Pipe Threads

Defense Logistics Agency

DLA MS17348 REV F-2003 CONNECTOR, RECEPTACLE, ELECTRICAL, JAMNUT (BOX)
DLA MS17347 REV E-2002 CONNECTOR, RECEPTACLE, ELECTRICAL, JAMNUT
DLA MS17347 REV F-2013 CONNECTOR, RECEPTACLE, ELECTRICAL, JAM NUT
DLA MS3322 REV B-1971 GASKET, CONDUCTIVE, ELECTRIC CONNECTOR, JAM NUT MOUNT
DLA MS3322 REV B VALID NOTICE 2-2001 GASKET, CONDUCTIVE, ELECTRIC CONNECTOR, JAM NUT MOUNT
DLA MS3322 REV B VALID NOTICE 1-1991 GASKET, CONDUCTIVE, ELECTRIC CONNECTOR, JAM NUT MOUNT
DLA MS14146 REV A VALID NOTICE 1-1994 NUT, SELF-LOCKING, CASTELLATED, HEXAGON, C'BORED, CAPTIVE WASHER, 450 DEG. F
DLA MS14146 REV A-1988 NUT, SELF-LOCKING, CASTELLATED, HEXAGON, C'BORED, CAPTIVE WASHER, 450 DEG. F

GM North America

GM GMM115-1988 Pipe Locknuts General Specifications
GM E001-1994 Section E - Table of Contents Nut Products - Hex, Lock, Spring, Stamped, Pierce, Weld

AENOR

UNE 18035:1980 ROLLING BEARING. ACCESORIES: LOCKNUTS.

SAE - SAE International

SAE ARP1515-1980 Threaded Fastener Protrusion Through Self-Locking Nuts
SAE ARP1515B-2018 Threaded Fastener Protrusion Through Self-Locking Nuts
SAE AS3535-1994 Nut@ Self-Locking@ Shank@ UNS N07001 Silver Plate UNJ Thread
SAE AS95234/7-2014 CONNECTOR@ RECEPTACLE@ REVERSE BAYONET COUPLING@ JAM NUT

Aerospace Industries Association

AIA NAS 489-1951 (Inactive)Nut - Latching Type (Rev. 1)
AIA NAS 1493-1991 Locknut Bearing Retaining (Rev. 6)
AIA NASM45938/3-1999 Nut, Plain, Clinch and Nut, Self-Locking, Clinch (Self Clinching, Knurled Collar, 450 Degrees F and 600 Degrees F) FSC 5310
AIA NASM45938/14-1999 Nut, Plain, Clinch and Nut, Self-Locking, Clinch (Self-Clinching, Knurled Collar, Floating, 450 Degrees F and 600 Degrees F) FSC 5310
AIA NASM45938/7-2002 Nut, Plain Clinch and Nut, Self-Locking Clinch (Knurled Collar, Miniature, 450 Degrees F) FSC 5310; Rev 3

AT-ON

ONORM M 6324 Teil.1-1987 Rolling bearings; accessories; adaptersleeves, withdrawal sleeves, locknuts, locking elements

VN-TCVN

TCVN 1910-1976 Hexagon lock nuts(high precision).Dimensions
TCVN 1902-1976 Hexagon lock nuts(Standard precision).Dimensions
TCVN 1912-1976 Hexagon lock slotted and castle nuts(high precision).Dimensions
TCVN 1911-1976 Hexagon lock slotted and castle nuts(high precision).Dimensions
TCVN 1904-1976 Hexagon lock slotted and castle nuts(Standard precision).Dimensions

Japanese Industrial Standards Committee (JISC)

JIS B 1554:1993 Rolling bearings -- Locknuts, lockwashers and lockplates
JIS W 1600:1987 Nuts, self-locking, aircraft, general specification for

International Organization for Standardization (ISO)

ISO 2320:2015 Fasteners - Prevailing torque steel nuts - Functional properties
ISO 2320:1972 Title missing - Legacy paper document
ISO 2983:1975 Rolling bearings; Locknuts, wide series, and lockwashers with bent inner tab
ISO 2982:1972 Rolling bearings; Locknuts, narrow series, and lockwashers with straight inner tab

TR-TSE

TS 3573-1981 ROLLING BEARINGS - LOCK NUTS, NARRV SEPIE, and Lockwashers With Straight Tab

GOST

GOST ISO 2320-2021 Fasteners. Prevailing torque steel nuts. Functional properties

GSO

OS GSO ISO 2982-2:2015 Rolling bearings -- Accessories -- Part 2: Dimensions for locknuts and locking devices
GSO ISO 2982-2:2015 Rolling bearings -- Accessories -- Part 2: Dimensions for locknuts and locking devices
BH GSO ISO 2982-2:2016 Rolling bearings -- Accessories -- Part 2: Dimensions for locknuts and locking devices

British Standards Institution (BSI)

BS 4185-1:1967 Machine tool components - Locknuts ('C' type, socket set screw locking)

Indonesia Standards

SNI 05-3218-1992 Prevailing torque type steel hexagon locknuts. Metric series dimensions

International Federation of Trucks and Engines

NAVISTAR ESP NM-31.001-GI-2015 VOID - Bearing Lock Nuts - General Information - Metric Series

Others: mj lock nut,Lock Nut Size,Standard lock nut,Seal lock nut,Locknut Assembly,Lock Nut Size,fasten the screw nut,n-type radio frequency socket locking nut,Jam Nuts and Lock Nuts,Hex lock nut