Fasteners

Steel Fasteners

Boston Export are the leading manufacturer of high integrity special fasteners (e.g. bolts, set screws, stud-bolts, nuts and washers), meeting clients’ exacting demands for critical applications in hostile environments. Whether for offshore (buoyancy and petrochemical), seawater, pump, valve or nuclear, the demands for an exceptional service and supply is never ending.

Nuts

Nut Bolt, Duplex Steel Nut, Steel Fasteners, Stainless Steel Steel Nut, Alloy Steel Steel Nut, Carbon Steel Steel Nut, Duplex steel Steel Nut.

Bolts

The major grade used in stainless steel bolts: 200 series, 300 series, and 400 series. We also stock Stell Fasteners. Quality Steel Bolts / Nut Bolt from Boston Export meet the strictest requirements and provide maximum safety for reliable operations without breaking down. Known for its impeccable finish, accurate dimensions and robust design.

Screws

The major grade used in stainless steel screws: 200 series, 300 series, and 400 series. We also stock Steel Fasteners. Quality Steel Screw from Boston Export meet the strictest requirements and provide maximum safety for reliable operations without breaking down. Known for its impeccable finish, accurate dimensions and robust design.

Washers

The major grade used in stainless steel washers: 200 series, 300 series, and 400 series. We also stock Steel Fasteners. Quality Steel Washers from Boston Export meet the strictest requirements and provide maximum safety for reliable operations without breaking down. Known for its impeccable finish, accurate dimensions and robust design.

PTFE Coated Fasteners

PTFE coated fastener’s provides exceptional corrosion resistance, low coefficient of friction, consistent tensioning and subsequent ease of installation and removal.

Extensive testing and field use have proven that the future of coated fastener’s lies with Fluoropolymer coatings. Previously hot dip, galvanized, cadium or zinc plated fastener’s were considered the standard. But these coatings could not stand up to the corrosive atmospheres prevalent in many industries. The most widely used application is on B7 studs with 2H nuts.

Dramatic improvements in efficiency, life expectancy and corrosion resistance are claimed to be imparted to Nut and Bolt connectors by the application of a low friction PTFE coating. PTFE coated connectors have out-performed all others in aggressive any noticeable effect.

Fasteners Application

American Made. It’s our manufacturing heritage, our focus going forward, and our commitment to you. It’s a part of all the industries Jignesh Steel serves, and these are the segments we know the best.


Fasteners Manufacturing Specifications

ASTM - Originally known as the American Society for Testing and Materials, was formed over a century ago, and is now one of the largest voluntary standards development organizations in the world, and is a trusted source for technical standards for materials, products, systems, and services. Known for their high technical quality and market relevancy, ASTM International standards have an important role in the information infrastructure that guides design, manufacturing and trade in the global economy

ASME - American Society of Mechanical Engineers is one of the oldest and most respected standards developing organizations (SDO) in the world. It produces and maintains approximately 600 codes and standards, covering a multitude of technical areas including boiler components, elevators, hand tools, fasteners, and machine tools to name just a few.

FF-S-85 - Federal Specifications for Screws, Cap, Slotted and Hexagon Head
FF-S-92 - Federal Specifications for Machine Screws.
MIL-S-1222 - Military Specifications for Studs, Bolts, Hex Cap Screws, and Nuts.
MIL-DTL-1222 - Military Specifications for Studs, Bolts, Screws, and Nuts for Applications Where A High Degree of Reliability is Required.

Fasteners of Marine Grade (316/316L)

Manufacturer & stockists of high integrity Fasteners of Marine Grade (316/316L), Best price

Buy comprehensive Variety of Fasteners of Marine Grade (316/316L) with discounted price, dimensions range from M3 to M100 and quantities from 1 to 90,000.

Type 316 is the second most common grade (after 304); for food and surgical uses; alloy addition of molybdenum prevents specific forms of corrosion. It is also known as marine grade stainless steel due to its increased resistance to chloride corrosion compared to type 304

DIN Fastener

DIN-Cap nuts
DIN-Castle nuts
DIN-Clevis pins
DIN-Clevis pins
DIN-Knurled nuts
DIN-Shim rings
DIN-Slotted head screws
DIN-Square head bolts
DIN-Square nuts
DIN-Tapping screws
DIN-Thread forming screws
DIN-Washers for use in structural steelwork
DIN-Weld nuts
DIN-Weld screws
DIN-Wood screws
DIN-Cross recessed head screws
DIN-Double end studs
DIN-Pins
DIN-Nails
DIN-Hexagon head bolts and screws
DIN-Hexagon head bolts and screws for use in DIN-Structural steelwork
DIN-Drilling screws with tapping screw thread
DIN-Split pins
DIN-Plain washers
DIN-Hexalobular head bolts
DIN-Prevailing torque type nuts
DIN-Sepcial washers
DIN-Miscellaneous bolts and screws
DIN-Miscellaneous nuts
DIN-Retaining rings
DIN-Keys

DIN 1-100
DIN 1 – Taper Pins
DIN 7 – Dowel Pins
DIN 84 A – Slotted Cheese Head Machine Screws
DIN 85 A – Slotted Pan Head Machine Screws
DIN 93 – Tab Washers With Long Tab
DIN 94 – Cotter Pins
DIN 95 – Slotted Oval Head Machine Screws
DIN 96 – Slotted Round Head Wood Screws
DIN 97 – Slotted Flat Head Wood Screws

DIN 101-200
DIN 125 A – Flat Washer Without Chamfer
DIN 125 B – Flat Washer With Chamfer
DIN 126 – Grade C Flat Washer Without Chamfer
DIN 127 A – Split Lock Washer With Bend Ends
DIN 127 B – Split Lock Washer With Flat Ends
DIN 128 A – Split Spring Washers, Curved
DIN 128 B – Split Spring Washers, Waved
DIN 137 A – Spring Washer, Curved
DIN 137 B – Spring Washer, Waved
DIN 186 A – Tee-Head Bolts With Square Head
DIN 188 – Tee-Head Bolts With Double Nip
DIN 193
DIN 196

DIN 301-400
DIN 315 – Wing Nuts
DIN 316 – Wing Screws

DIN 401-500
DIN 404 – Slotted Drilled Fillister Head Screws
DIN 417 – Slotted set screws with full dog point
DIN 427 – Slotted Headless Screws
DIN 431 – Jam Nut, Hexagonal
DIN 432 – External Tab Washer
DIN 433 – Flat Washer With Reduced O.D.
DIN 434 – Square Bevel Washer: 8%
DIN 435 – Square Bevel Washer: 14%
DIN 436 – Square Washer
DIN 438 – Slotted set screws with cup point
DIN 439 A – Hexagon Nuts – 0,5d Unchamfered
DIN 439 B – Hexagon Nuts – 0,5d Chamfered
DIN 444 A – Eye Bolts
DIN 462 – Internal Tab Washers
DIN 463 – Tab Washers With Long And Short Tab
DIN 464 – Knurled Thumb Screws
DIN 466 – Knurled Nuts, Full
DIN 467 – Flat Knurled Nuts
DIN 470 – Sealing Washers
DIN 471 – External Retaining Rings
DIN 472 – Internal Retaining Rings
DIN 478 – Square Head Bolts
DIN 479 – Square Head Bolts
DIN 480 – Square Head Bolts

DIN 501-600
DIN 525 – Weld Studs With Hexagon Nuts
DIN 529 A – Anchor Bolts (Stone Bolt)
DIN 529 B – Anchor Bolts (Stone Bolt)
DIN 529 C – Masonry Bolts With Hexagon Nuts
DIN 529 D – Anchor Bolts (Stone Bolt)
DIN 529 E – Foundation Bolts With Hexagon Nuts
DIN 529 F – Anchor Bolts (Stone Bolt)
DIN 529 G Bolt
Din 546 – Slotted Round Nut
DIN 547 – Round nuts with drilled holes in one face
DIN 548 – Round nuts with set pin holes in side
DIN 551 – Slotted Set Screws With Flat Point
DIN 553 – Slotted Set Screws With Cone Point
DIN 555 – Hexagon Nuts – 0,8d
DIN 557 – Square Nuts
DIN 558 – Fully Threaded Maching Bolts
DIN 562 – Square Thin Nuts
DIN 571 – Hexagon Lag Screws
DIN 580 – Lifting Eye Bolts
DIN 582 – Lifting Eye Nuts

DIN 601-700
DIN 601- Hexagon head bolt with nut
DIN 603 Mu – Carriage Bolts With Hexagon Nuts
DIN 604 – Flat Countersunk Nip Bolts With Hex Nuts
DIN 605 – Flat Countersunk Square Neck Bolts
DIN 607 – Round Head Nip Bolts With Nuts
DIN 608 – Countersunk Square Bolts (Short Neck)
DIN 609 – Hex Fitting Bolts w/long Threaded Portion
DIN 610 – Hex fitting Bolts w/short Threaded Portion
DIN 653 – Flat Knurled Thumb Screws
DIN 660 – Round Head Rivets
DIN 661 – Countersunk Head Rivets

DIN 701-800
DIN 705 A – Shaft Collars

DIN 801-900
DIN 835 Fo – Studs, Tap Ends – 2d

DIN901-1000
DIN 906 – Hexagon Socket Pipe Plugs
DIN 908 – Hexagon Socket Screw Plugs
DIN 910 – Hexagon Head Screw Plugs
DIN 911 – Hexagon Socket Screw Keys
DIN 912 – Socket Head Cap Screws
DIN 913 – Socket Set Screws With Flat Point
DIN 914 – Socket Set Screws With Cone Point
DIN 915 – Socket Set Screws With Dog Point
DIN 916 – Socket Set Screws With Cup Point
DIN 917 – Hexagon Cup Nuts – Low Pattern
DIN 920 – Slotted Pan Head Screws, Small Head
DIN 921 – Slotted pan head screws with large head
DIN 923 – Slotted Pan Head Screws With Shoulder
DIN 927 – Slotted Shoulder Screws
DIN 928 – Square Weld Nuts
DIN 929 – Hexagon Weld Nuts
DIN 931 – Hexagon Cap Screws Partially Threaded
DIN 933 – Hexagon Cap Screws Fully Threaded
DIN 933 Sz – Hexagon Cap Screws With Slot
DIN 934 – Hexagon Nuts – 0,8d
DIN 935 – Castle Nuts
DIN 936 – Hexagon Jam Nuts
DIN 937 – Hexagon Thin Slotted And Castle Nuts
DIN 938 – Studs – Metal end ≈ 1 d.htm
DIN 939 – Studs, Tap End – 1,25d
DIN 960 – Hex Cap Screws, Metric Fine Thread – Part Thread
DIN 961 – Hex Cap Screws, Metric Fine Thread – Full Thread
DIN 963 A- Slotted Flat Head Machine Screws
DIN 964 A- Slotted Oval Head Machine Screws
DIN 965 A – Cross Recessed Flat Head Machine Screws
DIN 966 A – Cross Recessed Oval Head Machine Screws
DIN 980 V – Self-Locking Nuts; All Metal Conctruction
DIN 982 – Self- Locking Nuts w/nylon Insert: Heavy Series
DIN 985 – Self Locking Nuts w/locking Insert: Standard Series
DIN 986 – Self Locking Domed Cap Nuts With Nylon Insert
DIN 988 – Shim Washers

DIN 1001-2000
DIN 1052
DIN 1440 – Flat Washers With Clevis Pins, Medium
DIN 1441 – Flat Washers For Clevis Pins, Coarse
DIN 1473 – Grooved Pins Full Length Paralled Grooved
DIN 1475 – Grooved Pins Third Length Center Grooved
DIN 1476 – Round Head Grooved Pins
DIN 1477 – Flat Countersunk Head Grooved Pins
DIN 1480 – Turnbuckles
DIN 1481 – Spring Ppins, Heavy Duty
DIN 1587 – Hexagon Domed Cap Nuts, Full Pattern
DIN 1804 w – Slotted Round Nuts

DIN 2001-3000
DIN 2093 A,B,C – Dics Springs (Belleville Type)
DIN 2338 – Parallel Pin
DIN 2339
DIN 2509 – Double end studs
DIN 2510

DIN 3001-3999
DIN 3570 – U Bows U Bolts

DIN 6001-7000
DIN 6319 – C D G Spherical washers and conical seats
DIN 6325 – Parallel Pins Hardened
DIN 6332 – Grub screws with thrust point
DIN 6334 – Hexagon Nuts – 3d
DIN 6796 – Conical Spring Washers (Belleville Type)
DIN 6797 A+J – Internal/External Tooth Lock Washers
DIN 6797 AZ – Tooth Lock Washers (Type AZ)
DIN 6797 IZ – Tooth Lock Washers (Type JZ)
DIN 6797 AZV – Tooth Lock Washers (Type AZV)
DIN 6798 A+J – Serrated Lock Washers
DIN 6798 AZV – Serrated Lock Washers (type AZV)
DIN 6798 V – 90degree Countersunk Serrated Lock Washers
DIN 6799 – Circlips For Shafts
DIN 6885 A – Parallel Keys, Round Ended
DIN 6885 B – Parallel Keys, Square Ended
DIN 6911 – Hexagon Socket Screw Keys With Pilot
DIN 6912 – Low Head Socket Cap Screws With Pilot
DIN 6914 – Hex Bolts For High Strength Struct. Bolting
DIN 6915 – Hex Nuts For High Strength Struc. Bolting
DIN 6916 – Washers For High Strength Structural Bolting
DIN 6917 – Square taper washer for -sections 14%
DIN 6918 – Square taper washer for U-sections
DIN 6921 – Hex Flange Bolts
DIN EN 1665 Hexagon bolts with flange – heavy series(Replace DIN 6922)
DIN 6923 – Hexagonal Flange Nuts
DIN 6924 Prevailing torque type hexagon nut with nylon insert ISO 7040
DIN 6925 – Prevailing torque type hexagon nut all metal
DIN 6926 – Self-Locking Hex Flange Nuts: Non Metallic Insert
DIN EN 1663 – Prevailing torque type hexagon nuts with flange with non-metallic insert

DIN 7001-8000
DIN 7338 – Rivets for brake linings and clutch linings
DIN 7343 – Coiled Pins, Medium Duty
DIN 7349 – Flat Washers With Large Ext. Diameter
DIN 7504 – N P K head self drilling screws
DIN 7968 – Hexagon fit bolts with hexagon nut for steel structures
DIN 7969 – Slotted countersunk head bolts with hexagon nut for steel structures
DIN 7970 – Tapping screw threads
DIN 7978 A – Taper PIns With Internal Thread
DIN 7979 D – Dowel Pins With Internal Thread
DIN 7980 – Hi-Collar Lock Washers
DIN 7981 B(BZ) – Cross Recessed Pan Head Tapping Screws
DIN 7982 B – Cross Rec. Flat hd Tapping Screws, hd Angle 80
DIN 7983 B – Cross Rec. Oval hd Tapping Screw, hd Angle 80
DIN 7984 – Socket Low Head Cap Screws
DIN 7985 A – Cross Recessed Pan Head Machine Screws
DIN 7985 Z1 – Cr. Rec. Pan Head Screws w/captive Flt. Washer
DIN 7985 Z4 – Cr. Rec. Pan Head Screws w/captive l/washer
DIN 7989 A – Washers For Steel Constructions
DIN 7991 – Flat Socket Head Cap Screws
DIN 7997 – Cross recessed countersunk head wood screws
DIN 7998 – Threads and Thread Ends for Wood Screws

DIN 9001-9999
DIN 9021
DIN 9250 Safety lock serrate washer

DIN EN 22339 – Unhardened Taper Pins (Replace DIN 1)



IFI Fastener (ANSI , ASME)

ASME B18.15 Forged Eyebolts (Type 1 & Type 2)
ASME B18.2.1 Square Head Bolts
ASME B18.2.1 Hex Bolts and Heavy Hex Bolts
ASME B18.2.1 Askew Head Bolts
ASME B18.2.1 Hex Cap Screws
ASME B18.2.1 Hex Flange Screws
ASME B18.2.1 Lobed Head Screws
IFI 115 Flange 12-Point Screws
ASME B18.5 Round Head Bolts
ASME B18.5 Round Head Square Neck Bolts
ASME B18.5 Round Head Short Square Neck Bolts
ASME B18.5 Round Head Ribbed Neck Bolts
ASME B18.5 Round Head Fin Neck Bolts
ASME B18.5 Step Bolts
ASME B18.5 Countersunk Bolts and Slotted Countersunk Bolts
ASME B18.5 114-deg Countersunk Square Neck Bolts
ASME B18.5 Flat Countersunk Head Elevator Bolts
ASME B18.5 T-Head Bolts
ASME B18.9 No. 3 Head Plow Bolts Round, Countersunk, Square Neck
ASME B18.9 No. 7 Head Plow Bolts Round, Countersunk, Reverse Key
ASME B18.9 No. 4 Repair Head Plow Bolts(Square Head, Countersunk)
ASME B18.9 No .6 Repair Head Plow Bolts(Round, Countersunk, Heavy Key)
ASME B18.10 Oval Neck Track Bolts
ASME B18.10 Elliptic Neck Track Bolts
IFI 136 Double End Studs
IFI 136 Interference-Thread Double End Studs
IFI 136 Bent Studs
IFI 148 Type U3 Projection Weld Studs
IFI 148 Type T3 Projection Weld Studs
IFI 148 Type TD Projection Weld Studs
IFI 148 Type UR Projection Weld Studs
IFI 148 Heavy Duty Type US3 Projection Weld Studs
IFI 148 Type UC4 Projection Weld Studs
IFI 148 Type TC4 Projection Weld Studs
IFI 148 Type TUS3 Projection Weld Studs
ASME B18.6.2 SLOTTED FLAT COUNTERSUNK HEAD CAP SCREWS
ASME B18.6.2 SLOTTED ROUND HEAD CAP SCREWS
ASME B18.6.2 SLOTTED FILLISTER HEAD CAP SCREWS
ASME B18.2.1 Square Head Bolts
ASME B18.6.2 SLOTTED HEADLESS SET SCREWS
ASME B18.2.5M Metric 12-Point Flange Head Screws
ASME B18.6.3 Slotted Flat Countersunk Head Screws
ASME B18.6.3 Recess Flat Countersunk Head Screws
ASME B18.6.3 Slotted 100-deg Flat Countersunk Head Screws
ASME B18.6.3 Recess 100-deg Flat Countersunk Head Screws
ASME B18.6.3 Slotted Close Tolerance 100-deg Flat Countersunk Head Screws
ASME B18.6.3 Recess Close Tolerance 100-deg Flat Countersuk Head Screws
ASME B18.6.3 Slotted Oval Countersuk Head Screws
ASME B18.6.3 Recess Oval Countersuk Head Screws
ASME B18.6.3 Slotted Undercut 82-deg Flat Countersuk Head Screws
ASME B18.6.3 Recess Undercut 82-deg Flat Countersuk Head Screws
ASME B18.6.3 Slotted Undercut Oval Countersuk Head Screws
ASME B18.6.3 Undercut Oval 82-deg Countersunk Head Screws
ASME B18.6.3 Flat Countersunk Trim Head Screws
ASME B18.6.3 Recess Dimensions For Countersuk Trim Head Screws

Carbon steel fasteners

We are one of the leading Manufacturer, Exporter and Supplier of High quality Carbon Steel Fasteners in mumbai, India. We also offer a complete range of Carbon Steel Fasteners such as Bolts, Nuts, Washer, Screw, threaded rod and stainless screws etc. These Carbon Steel Fasteners are widely used in various application industry. These Carbon Steel Fasteners are available in different size, shapes, grades, specification & thickness as per the clients requirments. We provide products as per DIN, ANSI, JIS standards.


Monel

Boston Export can provide a wide variety of Monel fasteners including; Monel nuts, Monel bolts, sockets, washers and more Monel Fasteners. If we do not have your Monel Fasteners in stock (Inch or Metric) we can have these manufactured to your specification.

Material Notes:

Compared to steel, Monel is very difficult to machine as it work-hardens very quickly. It needs to be turned and worked at slow speeds and low feed rates. It is resistant to corrosion and acids, and some alloys can withstand a fire in pure oxygen. It is commonly used in applications with highly corrosive conditions. Small additions of aluminium and titanium form an alloy (K-500) with the same corrosion resistance but with much greater strength due to gamma prime formation on aging. Monel is typically much more expensive than stainless steel.

Monel alloy 400 has a specific gravity of 8.83, an electrical conductivity of approximately 3.4% IACS, and (in the annealed state) a hardness of 65 Rockwell B.[3].

Trade Name ASME P Group ASTM/AISI Steel type UNS
Monel 400 B 127, B 164 N04400
Monel 401 N04401
Monel 404 B 164 N04404
Monel K-500 B 865 N05500
Monel R-405 N04405

Inconel

Inconel® fasteners, like Inconel 600, 601, 625, 686, 718 & 725 fasteners, are a family of nickel-chromium-molybdenum alloys used for their high strength at elevated temperatures and good corrosion resistance. Because of its high thermal stability, Inconel can be used in service temperatures ranging from cryogenic to 2200°F (982°C). The high alloy content of Inconel fasteners enable it to withstand a wide variety of severe corrosive environments. In mild environments, such as the atmosphere, sea water, neutral salts, and alkaline media, there is almost no attack to Inconel fasteners. In more severe corrosive environments the combination of nickel and chromium provides resistance to oxidizing chemicals, whereas the high nickel and molybdenum contents supply resistance to nonoxidizing environments.

Because Inconel fasteners offer a good balance of corrosion resistance, temperature stability, toughness and strength they are often a material of choice for chemical processing, aerospace, marine, electronics and oil & gas.

Hastelloy

Hastelloy® fasteners, such as Hastelloy C276 fasteners, are made from nickel-molybdenum-chromium alloy that is generally considered a versatile highly Corrosin Resistant alloy. Hastelloy fasteners have excellent corrosion resistance in both oxidizing and reducing media which makes it well suited for a variety of strong corrosive applications. Hastelloy fasteners also have exceptional resistance to both sulfuric acid and hydrochloric acid.

Because Hastelloy fasteners resist some of the most severe media, Hastelloy fasteners are often utilized in chemical processing applications where acid chlorides, solvents, formic and acetic acids, acetic anhydride, wet chlorine gas, hypochlorites, chlorine solutions and phosphoric acid are used. For chemical processing applications, Hastelloy C276 is the most common grade and one of the most corrosion resistant nickel alloys - exceeding that of most other nickel alloy grades like Inconel or Monel.

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