K. M. Steel India

Khetwadi, Mumbai, Maharashtra

Coupling nuts are used to make up long tie rod assemblies from shorter lengths of rod and to facilitate assembly of two fasteners or fittings which each have external threads.Coupling nut dimensions are described by the Industrial Fasteners Institute in standard IFI-128.

Titanium fasteners include bolts, screws, nuts, washers and some others. We are capable of supplying titanium fasteners from M4 to M24 for both CP and titanium alloys.Usually we have some of them in stock. Please feel free to contact us for your questions and requirements.

we sell Inconel Incoloy Nut to all the fields with a heavy concentration in electrical, mechanical, and steel erection contractors. We have a very large inventory of Inconel Incoloy Nut , specialty bolts in all of our warehouses, supplying fields such as fasteners, anchors, channel and strut accessories.

we also have our sales representatives to understand the requirements of our clients, we maintain ready stock of Brass Nut in Cities like Abu Dhabi, Riyadh, Manama, Muscat.PlatingFinish Available : Various types of PlatingFinish like Natural, Nickel, Silver, Tin or as specified are available as per specified layer of microns.

We have Fasteners such as screws, K Lock Nut , bolts, nuts, washers, and studs available in several grades and materials. Along with the standard fasteners we also stock B7 bolts & studs and stainless steel, nuts, K Lock Nut, bolts, and washersA small range of sizes to suit most applicationsM2.5 - M20 sizes ex-stockNo special tooling requiredOne head style - Hexagon

Titanium fasteners include bolts, screws, nuts, washers and some others. We are capable of supplying titanium fasteners from M4 to M24 for both CP and titanium alloys.

Usually we have some of them in stock. Please feel free to contact us for your questions and requirements.

The following table is the introduction of titanium grades.

Application of titanium fastener :

Titanium Grade 5 (Ti-6A14V) fasteners are popular in the industry of racing motorcycle and cars for its high tensile strength and lightness, it is maily used in racing car, motorcycle and bike application.Titanium Grade 2 (Pure titanium)fasteners are mainly used in petrol, chemistry and oil field industry for its corrosion resistance property.Titanium OEM parts can be made of both Grade 2 and 5.

Specification of titanium fastener are as follows :

1. GR2 and GR5 Titanium Bolt, Screw, Nuts and Thread Rod from M1 to M24Standard: DIN7, DIN912, DIN933, DIN84, DIN85, DIN963, DIN7991, DIN912, DIN931, ISO7380 etc.A: Mini screw and bolts : M1.0 to M4 AS Per customers required length or DIN standard.B: Usual screw, bolt and nuts: M4 to M24 or biggerC: Ti Thread rod: M1.0 to M24 of length 1000MM.D: CDM can produces as per customers drawing and special requirement.E: Titanium fastener and parts for racing motocycle and racing bicycle.

Copper Nut Exhaust Manifold NutSize : M10 x 1.5 sw15 Uses 15mm spanner.Self-locking with radial locking slot. The nut is strongly copper-plated and is therefore suitable in areas of extreme heat eg exhaust manifolds. Suitable for temperatures from -70 to 400 degrees centigrade. Thermag slotted nuts are made of high-quality steel FK8DIN 14441

Copper Nut Exhaust Manifold NutSize : M10 x 1.25 sw14 Uses 14mm spanner.Self-locking with radial locking slot. The nut is strongly copper-plated and is therefore suitable in areas of extreme heat eg exhaust manifolds. Suitable for temperatures from -70 to 400 degrees centigrade. Thermag slotted nuts are made of high-quality steel FK8DIN 14441

Standard Material

Copper: C11000, C10100.

Brass: C36000, C37710, C27400, C27200, C27000, C26000.

Silicon Bronze: C65100, C65500.

Phosphor / Tin Bronze: C51000, C51100, C54400, C51900

Aluminium Bronze: C60800, C61000, C62300, C63000, C95600.

• A563M - A194 - Alloy Steel Nuts
• A194/A194M Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature
• A242/A242M High-Strength Low-Alloy Structural Steel
• A307 Carbon Steel Bolts and Studs
• A325 Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength
• A354 Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners
• A394 Steel Transmission Tower Bolts, Zinc-Coated and Bare
• A449 Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength
• A490 Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength
• A588/A588M High-Strength Low-Alloy Structural Steel
• A687 High-Strength Nonheaded Steel Belts and Studs Withdrawn.
• A709/A709M Structural Steel for Bridges
• F1789 Fasteners
• F2329 Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners

• PLAIN WASHER , PLAIN BIG & SMALL OD WASHER , SPRING LOCK WASHER , SPRING WASHER HEAVY DUTY , TOOTH WASHER , STAR WASHER , TAB WASHER WITH ONE & TWO TAB

  ALLOY STEEL NUTS

  HEXAGON NUTS , HEXAGON COUPLING NUTS , HEXAGON THIN NUT , SQUARE NUT , HEXAGON CASTLE NUTS , SELF LOCKING NUT , HEXAGON DOMED CAP NUTS

  ALLOY STEEL SCREW

  PAN HEAD SLOTTED SCREWS , CHEESE HEAD SLOTTED SCREWS , COUNTERSUNK HEAD SLOTTED SCREWS , COUNTERSUNK RAISED HEAD SLOTTED SCREWS , PAN PHILLIPSE HEAD SCREW , COUNTERSUNK PHILLIPSE RAISED HEAD SCREWS , SLOTTED CHEESE TRIM HEAD MACHINE SCREWS , SOCKET HEAD ALLEN CAP SCREWS , ALLEN COUNTERSUNK SOCKET HEAD CAP SCREWS , SOCKET HEAD SHOULDER SCREWS , SOCKET HEAD CAP SCREW LOW HEAD , HEXAGON SOCKET SET SCREW WITH FLAT POINT , HEXAGON SOCKET SET SCEWS WITH CONE POINT , HEXAGON SOCKET SET SCREW WITH DOG POINT , HEXAGON SOCKET SET SCREWS WITH DOG POINT , HEXAGON SOCKET SET SCREWS WITH CUP POINT , IMPRIAL SOCKET CAP SCREWS .

Flange lock nuts are one piece, all-metal prevailing torque hex flange nuts. Being all-metal, they do not have the temperature and chemical limitations of non-metallic (such as nylon) insert type lock nuts. The protruding circular flange increases the nut's bearing surface allowing them to be used with irregular and oversized holes. Commercial and industrial applications include lawn and garden equipment and truck manufacturing. Flange lock nuts are also called:flange style automation lock nut, prevailing torque flange nuts, deformed thread flange lock nuts.

They are often used with 150 ksi hex flange bolts. Lock washers are not used with prevailing torque lock nuts.

By definition, "Prevailing-torque locking fasteners have a self-contained feature which creates frictional interference between the threads of the mating components." Consequently, unlike free spinning lock nuts, there is a resistance to rotation during both assembly and disassembly requiring them to be wrenched; that resistance is called prevailing torque. The advantage is that disassembly is unlikely even if preload diminishes completely because of the remaining rotational resistance. Despite the fact they are called "lock nuts, " flange lock nuts are not permanently locked in place so they can be adjusted or removed after installation. However, their "locking" feature does resist loosening without the nuts being seated, which allows them to be used as stop nuts or spacers for rotating or other components.

Threads are standard right-hand and Unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine).

Flange lock nut size refers to its nominal thread diameter. Typically, sizes range from about 1/4" to 1". Size is specified in inches, usually fractional rather than decimal.

Nut width and thickness vary with the size of the flange lock nut.

Flange lock nuts need to be fully engaged with the bolt/screw threads for the locking feature to be effective. To ensure full thread engagement, bolts/screws should be long enough to allow at least two full threads to extend beyond the nut face after tightening. Conversely, there should be two full threads exposed on the head side of the nut to make sure the nut can be properly tightened.

Grade G is common as are phosphate & oil and yellow zinc plated finishes. Some nuts are available from domestic (USA) manufacturers.

Flange lock nuts are reusable but only for a limited number of times because the prevailing torque declines each time the nut is used. Always follow the manufacturer's recommendations regarding nut reuse, thread lubricants and torque values. Do not apply standard torque values to prevailing torque lock nuts because the joint may not be tightened to the correct clamping force due to the additional friction of the locking element.

It is possible that the locking feature, which consists of deformed threads, may damage the threads of the nut or bolt. The possibility is reduced when the strength grades of the nut and bolt are compatible. For example, Grade G nuts are suggested for use with bolts having a specified minimum ultimate tensile strength of not less than 120, nor greater than 150 ksi. The chance of damage is greatest if the hardness of the mating fastener is vastly different; for example, using a non-heat treated low carbon steel bolt or screw with a heat treated nut.

Prevailing torque lock nuts are not considered suitable for long threaded assemblies because extended nut travel along the threads could damage the nut's locking feature. Therefore, the length of the bolt or screw should not be much longer than that needed to ensure full thread engagement with the nut.

Serrated Flange Nuts

Serrated Flange NutSerrated flange nuts are hex flange nuts with a serrated bearing surface. The nut turns freely until the serrations contact and displace material on the mating surface as the nut is tightened; less torque is needed to install than remove because the gripping action of the serrations create a ratchet-type locking feature that is resistant to vibration. If the mating surface is painted or plated, corrosion can occur if the nut's wiping action removes the surface treatment. The protruding circular flange increases the bearing surface of the nut allowing it to be used with irregular and oversized holes. Used in commercial and industrial applications, serrated flange nuts are also called:serrated face lock nuts, serrated tooth nuts, spin lock nuts, whiz lock nuts.

Because the serrations must contact the mating surface to "lock", serrated flange nuts are not used with flat or lock washers.

Threads are standard right-hand and Unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine).

Serrated flange nut size refers to its nominal thread diameter. Typically, sizes range from about #6 to 5/8". Sizes less than 1/4" are listed as a number size (the larger the number the larger the size) while sizes that are 1/4" and larger are specified in inches, usually fractional rather than decimal.

Nut width and thickness vary with the size of the serrated flange nut.

Steel, zinc plated, is a common material and finish; stainless steel is also available.

Serrated flange nuts are reusable. However, always follow the manufacturer's recommendations regarding nut reuse, thread lubricants and torque values.

Flange Lock Nuts Dimensions

Physical Properties of Grade G Nuts (strength equivalent to Grade 8 nuts)

Material: Medium Carbon Steel, Heat TreatedProof Load Strength: 150, 000 psi minRockwell Hardness: Dia 1/4 to 5/8 Rc 24/32Dia 3/4 to 1" Rc 26/34

Cap Nuts Dimensions

Cap Nuts 18-8 Stainless Steel

Typically manufactured from either low carbon steel or stainless steel, cap nuts, also referred to as acorn nuts are used to cover exposed bolt ends and add a finished appearance. ;These stainless steel cap nuts are composed of a hex nut and top cap consisting of 18% chromium and 8% nickel for corrosion resistance. Good for exterior and most marine applications.

Cap Nuts Nickel

Typically manufactured from either low carbon steel or stainless steel, cap nuts, also referred to as acorn nuts are used to cover exposed bolt ends and add a finished appearance. These carbon steel cap nuts are composed of a hex nut and a top cap manufactured from 1006 to 1010 carbon steel. They are nickel plated for appearance.

we also have our sales representatives to understand the requirements of our clients, we maintain ready stock of Slotted Nuts in Cities like Abu Dhabi, Riyadh, Manama, Muscat, Doha, Dubai, Damascus, Khartoum, Beirut, Jeddah, Aleppo, Alexandria, Algiers, Amman, Mosul, Cairo, Baghdad, Dammam, Casablanca, Basra, Mecca, Tripoli, Rabat, Sana'a, Arbil, Hilla, Port Said, Marrakech, Medina, Al Hudaydah, Omdurman, Damietta, Homs, Kafr Dawar, Benghazi, Fez, Bahri, Nouakchott, Sulaymaniyah, Safi, Zarqa, Oran, Kirkuk, Ismailia, Tunis, Agadir, Tangier, Sharjah, Shibin El Kom, Misratah, Matrah, Aden, Najaf, Karbala, Latakia, Sousse, Meknes, Gaza, Fallujah, Aswan, Kassala, Al-Ubayyid, Sohag, Kuala Lumpur, Penang, Kuching & many more.

corners. The locking action, created by distortion of their top threads, is said to be capable of withstanding severe vibration and shock loads. Since they are top locking and only the bottom surface is flat, Stover lock nuts are considered one way lock nuts because they are installed one waytop up. Being all-metal, they do not have the temperature and chemical limitations of non-metallic (such as nylon) insert type lock nuts. Used in the automotive, agricultural equipment and metalworking industries, their cone shape allows for proper orientation during automated assembly making them popular for high volume applications. Stover lock nuts are also called:automation lock nuts, Autolock nuts, Crownlock nuts, Unitorque nuts.

Lock washers are not used with prevailing torque lock nuts.

By definition, "Prevailing-torque locking fasteners have a self-contained feature which creates frictional interference between the threads of the mating components." Consequently, unlike free spinning lock nuts, there is a resistance to rotation during both assembly and disassembly requiring them to be wrenched; that resistance is called prevailing torque. The advantage is that disassembly is unlikely even if preload diminishes completely because of the remaining rotational resistance. Despite the fact they are called "lock nuts, " Stover lock nuts are not permanently locked in place so they can be adjusted or removed after installation. And because they stay put without being seated, they are used as stop nuts or spacers for rotating or other components.

Threads are standard right-hand and Unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine).

Stover lock nut size refers to its nominal thread diameter. Typically, sizes range from about 1/4" to 1". Size is specified in inches, usually fractional rather than decimal.

Grade T9, Cadmium Dichromate Plated, is a common grade and finish. Never replace a graded Stover lock nut with a lower grade or lower strength nut.

Nut width and thickness vary with the size of the Stover lock nut.

The nuts spin freely until their distorted top threads engage the threads of the mating part. For the locking action to be effective, the locking element must contact fully formed threads so several threads of a standard bolt/screw should extend beyond the top of the nut.

Stover lock nuts are reusable a limited number of times because the prevailing torque declines each time the nut is used. Always follow the manufacturer's recommendations regarding nut reuse, thread lubricants and torque values. Do not apply standard torque values to prevailing torque lock nuts because the joint may not be tightened to the correct clamping force due to the additional friction of the locking element.

Generally, prevailing torque lock nuts are not considered suitable for long threaded assemblies because extended nut travel along the threads could damage the nut's locking feature or the mating threads. Therefore, the length of the bolt/screw should not be much longer than that needed to ensure full thread engagement with the nut.

Din 980V Stover Nut is a hex all-metal prevailing torque self-locking nut, which is available in grades 8, 10 and 12 with thread diameters from M4 to M48 in standard pitch, fine pitch and extra find pitch.

Din 980V Stover Nuts are vibration resistant self-locking nuts. The self-locking function of the Din980V Stover Nut is still effective after a number of applications meaning it can be reused many times and is resistant to shocks, vibration and dynamic loads.

The locking function of the Din 980V Stover Nut is achieved by the deformation of part of the nut. The nut will run smoothly until it reaches the deformed part after which the clamping force will subsequently increase.

A castellated nut, also called a castle nut or slotted nut, is a nut with slots (notches) cut into one end.The name comes from the nuts resemblance to the crenellated parapet of a medieval castle.

The bolt or axle has one or two holes drilled through its threaded end. The nut is torqued properly and then, if the slot is not aligned with the hole in the fastener, the nut is rotated back to the nearest slot. The nut is then secured with a cotter pin or safety wire.

Castellated nuts are used in low-torque applications, such as holding a wheel bearing in place

Castle Nuts Dimensions

Slotted Hex Castle Lock NutsHex Castle Nuts - ANSI B18.2.2 - 1970

Keps nuts are hex nuts with captive (non-removable) free-spinning lock washers, which are often external tooth. The nut turns freely during installation until the lock washer contacts and bites into the mating surface as the nut is tightened. If the mating surface is painted or plated, corrosion can occur if the lock washer penetrates and removes the surface treatment. Used in commercial and industrial applications, Keps nuts are also known as: captive washer lock nuts, Keps lock nuts, K-Lock nuts.

Since they are not prevailing torque type lock nuts, they are not "locked" until fully seated and tightened.

Threads are standard right-hand and Unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine).

Keps nut size refers to its nominal thread diameter. Typically, sizes range from about #4 to 3/8". Sizes less than 1/4" are listed as a number size (the larger the number the larger the size) while sizes that are 1/4" and larger are specified in inches, usually fractional rather than decimal.

Nut width across flats, which is wrench size, and thickness vary with the size of the Keps nut.

Steel, zinc plated, is a common material and finish.

Keps nuts are popular because they are low cost, reusable and the one-piece solution saves time over installing a separate lock washer and nut. However, if either the nut or washer is damaged, both must be replaced. Since they are not prevailing torque type lock nuts, they are suitable for use on long threaded assemblies and will not gall mating threads.

Acorn (Cap) Nut - Fine (SAE) Thread

Acorn (Cap) NutsDome NutsFine (SAE) ThreadNickle Plated Steel

10-32 Acorn (Cap) Nut1/4-28 Acorn (Cap) Nut5/16-24 Acorn (Cap) Nut3/8-24 Acorn (Cap) Nut1/2-20 Acorn (Cap) Nut

Acorn (Cap) Nut - Coarse (USS) Thread

Acorn (Cap) NutsDome NutsCoarse (USS) ThreadNickle Plated Steel

4-40 Acorn (Cap) Nut6-32 Acorn (Cap) Nut8-32 Acorn (Cap) Nut10-24 Acorn (Cap) Nut1/4-20 Acorn (Cap) Nut5/16-18 Acorn (Cap) Nut3/8-16 Acorn (Cap) Nut7/16-14 Acorn (Cap) Nut1/2-13 Acorn (Cap) Nut9/16-12 Acorn (Cap) Nut5/8-11 Acorn (Cap) Nut3/4-10 Acorn (Cap) Nut7/8-9 Acorn (Cap) Nut1"-8 Acorn (Cap) Nut

Wing Nuts

304 (A2) WING NUTS: M4Wing Nut Metric Stainless Steel
304 (A2) WING NUTS: M5Wing Nut Metric Stainless Steel
304 (A2) WING NUTS: M6Wing Nut Metric Stainless Steel
304 (A2) WING NUTS: M8Wing Nut Metric Stainless Steel
304 (A2) WING NUTS: M10Wing Nut Metric Stainless Steel

304 (A2) WING NUTS: M12Wing Nut Metric Stainless Steel

304 (A2) WING NUTS: M16Wing Nut Metric Stainless Steel

We have Fasteners such as screws, Copper Fasteners Bolts Nut , bolts, nuts, washers, and studs available in several grades and materials. Along with the standard fasteners we also stock B7 bolts & studs and stainless steel, nuts, Copper Fasteners Bolts Nut, bolts, and washers

Alloy Steel Nut , bolts, nuts, washers, and studs available in several grades and materials. Along with the standard fasteners we also stock B7 bolts & studs and stainless steel, nuts, Alloy Steel Nut, bolts, and washers. We also carry a large inventory of mechanical anchors such as, drop-ins, wedge anchors, tapcons, lead, plastic, and hollow wall anchors.

Sleeve nuts are similar to coupling nuts in that they are designed to connect two like-diameter fasteners. They are often used in place of turnbucklessleeve nut and in combination with high strength tie rods. These custom nuts are typically tapped with right hand (RH) threaded on one end and left hand (LH) threads on the other end