Fasteners

Reliable Fasteners manufactures Fasteners like Hex Bolts, Allen Bolts, Machine Bolts, Lifting Bolts, Hex Screws, Socket Cap Screws, Grub Screws, Set Screws, Hex Nuts, Stud Bolts, Threaded Bars, Washer, Rings, Machined Components & Raw Bar Stock. We adapt a technical approach for every requirement. With integrated Team & Modern technology, we are able to entertain Client from all sector.

We propose both Cold Forged, Hot Forged & Bar Stock Fasteners with complete material compliance. Excelling exceptionally in Hot Forged & Bar Stock Fasteners, TorqBolt has rooted interest in Cold Forged range.

Products

AnchorScrews
BoltsSockets
NutsStuds
PinsWasher

Mix Products - Bolts, Nuts, Screws, Washers

We offer complete material range from Low Carbon Alloy Steel, High Tensile Structural & Weathering Steel to Stainless Steel, Dual Phase Duplex Steel, Super Duplex, High Nickel Alloys, Titanium,Copper & Copper Alloys, Marine Grades, High Temperature Alloys with complete compliance with relative Material & Dimensional Standards Compliance with ISO, DIN, EN, IS ,ASTM, ASME, NACE etc.

Types Of Bolts

In Petro and chemical industry for flange connections Stud Bolts and Hex Bolts are used. The Stud Bolt is a threaded rod with 2 heavy hexagon nuts, while the Hex Bolt has a head with one nut. Nuts and head are both six sided.

Stud Bolts General

The quantity of bolts for a flange connection will be given by the number of bolt holes in a flange, diameter and length of bolts is dependent of flange type and Pressure Class of flange.

Stud Bolt length are defined in ASME B16.5 standard. The length in inches is equal to the effective thread length measured parallel to the axis, from the first to the first thread without the chamfers (points). First thread is defined as the intersection of the major diameter of the thread with the base of the point.

Bolt Length

Notes:

  • The length of metric Stud Bolts measured parallel to axis, is the distance from each Stud Bolt, including the point.
  • To allow the use of hydraulic tensioning equipment, larger dimension studs shall be often one diameter longer than “standard”. That bolts to have plastic end cap protection.

Threads Of Stud Bolts

Bolts threading are defined in ASME B1.1 Unified Inch Screw Threads, (UN and UNR Thread Form). The most common thread is a symmetrical form with a V-profile. The included angle is 60°. This form is widely used in the Unified thread (UN, UNC, UNF, UNRC, UNRF) form as the ISO / metric threads.
The advantage of a symmetrical threads is that they are easier to produce and inspect compared with non-symmetrical threads. These are typically used in general-purpose fasteners.
Thread series cover designations of diameter/pitch combinations that are measured by the number of threads per inch (TPI) applied to a single diameter.

Standard Thread Pitches

  • Coarse thread series (UNC/UNRC) is the most widely used thread system and applied in most of the screws, bolts and nuts. Coarse threads are used for threads in low strength materials such as iron, mild steel, copper and softer alloy, aluminium, etc.. The coarse thread is also more tolerant in adverse conditions and facilitate quick assembly.
  • Fine thread series (UNF/UNRF) is commonly used in precision applications and in there where require a higher tensile strength than the coarse thread series.
  • 8 – Thread series (8UN) is the specified thread forming method for several ASTM standards including A193 B7, A193 B8/B8M, and A320. This series is mostly used for diameters one inch and above.

Hex Nuts

Hex nuts (dimensional data) are defined in ASME B18.2.2, and even as bolts the threading in ASME B1.1. Depending on a customer specification, nuts must be both sites chamfered or with on one side a washer-face.

Nuts

Dimensions of above mentioned nuts, can be found on page Heavy Hex Nuts of this website.
Note: the height of a nut for Stud Bolts are the same as the diameter of the thread rod.

Materials For Stud Bolts

Dimensions from Stud Bolts are defined in the ASME B16.5 standard. The material qualities for studs are defined in the different ASTM standards, and are indicated by Grade. Frequently used grades are A193 for thread rods and A194 for the nuts.

ASTM A193 covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
ASTM A194 covers a variety of carbon, alloy, and martensitic and austenitic stainless steel nuts. These nuts are intended for high-pressure or high-temperature service, or both.

Below you will find as an example a table with materials and grades for flanges, thread rods (bolts) and nuts, arranged on design temperature, flanges, thread rods and recommended nuts.

DESIGN TEMP.FLG’SGRADE THREAD RODSGRADE NUTS
-195° to 102°CASTM A182 Gr. F304, F304L, F316, F316L, F321, F347A320 Gr.B8 Class2A194 Gr.8A
-101° to -47°CASTM A350 Gr.LF3A320 Gr.L7A194 Gr.7
-46° to -30°CASTM A350 Gr.LF2A320 Gr.L7A194 Gr.7
-29° to 427°CASTM A105A193 Gr.B7A194 Gr.2H
428° to 537°CASTM A182 Gr.F11, F22A193 Gr.B16A194 Gr.2H
538° to 648°CASTM A182 Gr.F11, F22A193 Gr.B8 Class1A194 Gr.8A
649° to 815°CASTM A182 Gr. F304H, F316HA193 Gr.B8 Class1A194 Gr.8A

Marking Of Stud Bolts

Thread rods and nuts must be marked by the manufacturer with a unique identifier to identify the manufacturer or private label distributor, as appropriate. Below a number of ASTM examples.

Marking on Bolts

 

Method For Calculating Stud Bolt Lengths

The Stud Bolt Theoretical Length Can Be Calculated
By Means Of The Formula: L = 2 (S + N + H + Rf) + G

Drawing for calculation of Bolt Length

  • s = free threads (equals 1/3 time bolt diameter)
  • n = nut height (equals nominal bolt diameter)
  • h = flange (plate) thickness
  • rf = height of raised face
  • g = gasket thickness

Grades

AISI 303, AISI 304/304L/304N, AISI 309/309S, AISI 310/310S, AISI 316/316L/316Ti, AISI 317/317L, AISI 321/321H, AISI 347/347H, AISI 409, AISI 410/410S, AISI 416, AISI 420/420F, AISI 429, AISI 430/430F, AISI 446/446C, AISI 904L, Grade 660 Bolts.

Stainless Steels / Others

Grade

Related Specification

 

British

European

ASTM

UNS

304/304L

BS 970

1.4301/1.4306

A193 B8, A320 B8  

S 30400 / S30403

310

BS 970

1.4841

A479

S 31000 S 31008

310S

BS 970

1.4845

 

S 31008

316/316L

BS 970

1.4401

A193 B8M, A320 B8M

S 31600 / S31603

317/317L

BS 970

1.4449/1.4438

 

S 31700 / S31703

321

BS 970

1.4541

A193 B8T

S 32100

347

BS 970

1.4550

A193 B8C, A320 B8C

S 34700

410

BS 970

1.4006

 

S 41000

431

BS 970

1.4057

 

S 43100

174PH

 

1.4562

 

S 14700

660 A/B/C/D

 

1.4980

A453

K 66286

254 SMO ®

 

1.4547

 

S 31254

C63000

  

B150

C63000

904L

 

1.4539

 

N08904

Zirconium 702

   

R60702

Zirconium 705

   

R60705

Other Stainless Steel Grades :
301, 302, 303, 304, 305, 309, 310, 316, 317, 321, 330, 347, 405, 410, 414, 416, 420, 430, 431, 440, 442, 446, 501, 502, Alloy 10 & 20, 17-4 PH, 17-7 PH, 17-10PH, PH 15-7Mo.

We are the leading Exporter of almost all types of industrial fasteners . We are specialist in Special Grade Fasteners Like Inconel, Monel, Hastelloy, Duplex, Super Duplex, Alloy 20, SS 904L, SS 321, Titanium etc. We also extend custom production of fasteners in bulk according to the customers’ samples or drawings.

Reliable Fasteners is acknowledged as a manufacturer, exporter, stockists & suppliers of ASTM A193 Stainless Steel Bolts, available in a variety or grades, materials, and finishes, in metric and inch sizes. We are a family owned, full line fastener distributor specializing in stainless steel bolts for companies involved in Equipment Manufacturing, Mining, Oil Refineries, Chemical manufacturing, Steel and Aluminum Manufacturing, Utilities and Transportation, and Industrial Construction. Please check below ASTM A193 Stainless Steel Bolts 2014-15 price list. We supply all size bolts & stud bolts at great price. There are three major Steel Fasteners used in industries: Stainless Steel Bolts, Carbon Steel Bolts, and Alloy Steel Bolts.

As an acclaimed endeavor of the business, Reliable Fasteners is included in offering an immeasurable cluster of Carbon Steel Fasteners as a maker, exporter, stockiest and supplier to our residential and worldwide customers. To give shifted requests of our clients in finest conceivable way, we are giving a broad assortment of these clasp. All things considered, we utilize the top notch nature of raw materials and dynamic innovation in making these clasp for to meet the pied likings of our clients.

We give the same in different sizes according to the customers’ prerequisites. Our items are reachable in business sector at incredibly financially savvy rates. Concerning national and universal nature of crude materials, we likewise offer these Carbon Steel Fasteners in modified sizes and thicknesses according to particular requests by our regarded customers at business sector driving costs.

Reliable Fasteners exports Carbon Steel Fasteners to countries like UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan & Saudi Arabia.

Form 
Bolts 
STUD BOLTS, HEX HEAD BOLTS, SOCKET HEXAGON HEAD SCREW ANCHOR BOLTS, U-BOLTS, J BOLTS, MUSHROOM HEAD SQUARE NECK BOLTS , T- HEAD BOLTS , WING SCREW , EYE BOLT , EYE BOLT, FOUNDATION BOLTS, STRUCTURAL BOLTS.

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

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

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 .

Mild Steel Fasteners : Bolts

Bolt Specifications

ASTM A193 – Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
ASTM A307 – Carbon steel bolts and studs, 60,000 psi tensile strength.
ASTM A320 – Alloy steel and stainless steel bolting materials for low temperature service.
ASTM A325 – Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
ASTM A354 – Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
ASTM A449 – Quenched and tempered steel bolts and studs for general use.
ASTM A490 – Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
ASTM F593 – Stainless steel bolts, hex cap screws, and studs.
ASTM F1554 – Anchor bolts designed to anchor structural supports to concrete foundations.

Nut Specifications

ASTM A194 – Carbon and alloy steel nuts for bolts for high pressure and high temperature service.
ASTM A563 – Standard specification for carbon and alloy steel nuts.
ASTM F594 – Stainless steel nuts.
Plating Specifications

ASTM A153 – Zinc coating (hot dip) on iron and steel hardware.
ASTM B695 – Mechanically deposited zinc coatings on iron and steel.
ASTM F1941 – Electrodeposited coatings on threaded fasteners (Zinc plating).
ASTM F2329 – Zinc coating, hot dip, for bolts, screws, washers, nuts, and special threaded fasteners.

Washer Specifications

ASTM F844 – Unhardened, general purpose, flat washers.
ASTM F436 – Hardened steel washers.
ASTM F959 – compressible washer type direct tension indicators (DTIs) in diameters 1/2 to 1-1/2 inches
ASTM F2437 – compressible washer type direct tension indicators (DTIs) in diameters 1/4 to 2-1/2 inches

Mild Steel Fasteners : Nuts

Bolt Specifications

ASTM A193 – Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
ASTM A307 – Carbon steel bolts and studs, 60,000 psi tensile strength.
ASTM A320 – Alloy steel and stainless steel bolting materials for low temperature service.
ASTM A325 – Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
ASTM A354 – Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
ASTM A449 – Quenched and tempered steel bolts and studs for general use.
ASTM A490 – Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
ASTM F593 – Stainless steel bolts, hex cap screws, and studs.
ASTM F1554 – Anchor bolts designed to anchor structural supports to concrete foundations.

Nut Specifications

ASTM A194 – Carbon and alloy steel nuts for bolts for high pressure and high temperature service.
ASTM A563 – Standard specification for carbon and alloy steel nuts.
ASTM F594 – Stainless steel nuts.
Plating Specifications

ASTM A153 – Zinc coating (hot dip) on iron and steel hardware.
ASTM B695 – Mechanically deposited zinc coatings on iron and steel.
ASTM F1941 – Electrodeposited coatings on threaded fasteners (Zinc plating).
ASTM F2329 – Zinc coating, hot dip, for bolts, screws, washers, nuts, and special threaded fasteners.

Washer Specifications

ASTM F844 – Unhardened, general purpose, flat washers.
ASTM F436 – Hardened steel washers.
ASTM F959 – compressible washer type direct tension indicators (DTIs) in diameters 1/2 to 1-1/2 inches
ASTM F2437 – compressible washer type direct tension indicators (DTIs) in diameters 1/4 to 2-1/2 inches

Mild Steel Fasteners : Screws

Bolt Specifications

ASTM A193 – Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
ASTM A307 – Carbon steel bolts and studs, 60,000 psi tensile strength.
ASTM A320 – Alloy steel and stainless steel bolting materials for low temperature service.
ASTM A325 – Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
ASTM A354 – Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
ASTM A449 – Quenched and tempered steel bolts and studs for general use.
ASTM A490 – Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
ASTM F593 – Stainless steel bolts, hex cap screws, and studs.
ASTM F1554 – Anchor bolts designed to anchor structural supports to concrete foundations.

Nut Specifications

ASTM A194 – Carbon and alloy steel nuts for bolts for high pressure and high temperature service.
ASTM A563 – Standard specification for carbon and alloy steel nuts.
ASTM F594 – Stainless steel nuts.
Plating Specifications

ASTM A153 – Zinc coating (hot dip) on iron and steel hardware.
ASTM B695 – Mechanically deposited zinc coatings on iron and steel.
ASTM F1941 – Electrodeposited coatings on threaded fasteners (Zinc plating).
ASTM F2329 – Zinc coating, hot dip, for bolts, screws, washers, nuts, and special threaded fasteners.

Washer Specifications

ASTM F844 – Unhardened, general purpose, flat washers.
ASTM F436 – Hardened steel washers.
ASTM F959 – compressible washer type direct tension indicators (DTIs) in diameters 1/2 to 1-1/2 inches
ASTM F2437 – compressible washer type direct tension indicators (DTIs) in diameters 1/4 to 2-1/2 inches

Mild Steel Fasteners : Washer

ASTM A193 – Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
ASTM A307 – Carbon steel bolts and studs, 60,000 psi tensile strength.
ASTM A320 – Alloy steel and stainless steel bolting materials for low temperature service.
ASTM A325 – Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
ASTM A354 – Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
ASTM A449 – Quenched and tempered steel bolts and studs for general use.
ASTM A490 – Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
ASTM F593 – Stainless steel bolts, hex cap screws, and studs.
ASTM F1554 – Anchor bolts designed to anchor structural supports to concrete foundations.

Nut Specifications

ASTM A194 – Carbon and alloy steel nuts for bolts for high pressure and high temperature service.
ASTM A563 – Standard specification for carbon and alloy steel nuts.
ASTM F594 – Stainless steel nuts.
Plating Specifications

ASTM A153 – Zinc coating (hot dip) on iron and steel hardware.
ASTM B695 – Mechanically deposited zinc coatings on iron and steel.
ASTM F1941 – Electrodeposited coatings on threaded fasteners (Zinc plating).
ASTM F2329 – Zinc coating, hot dip, for bolts, screws, washers, nuts, and special threaded fasteners.

Washer Specifications

ASTM F844 – Unhardened, general purpose, flat washers.
ASTM F436 – Hardened steel washers.
ASTM F959 – compressible washer type direct tension indicators (DTIs) in diameters 1/2 to 1-1/2 inches
ASTM F2437 – compressible washer type direct tension indicators (DTIs) in diameters 1/4 to 2-1/2 inches

Inconel 600 Bolts, Inconel 625 Bolts, Inconel 718 Bolts, Inconel 800 Bolts, Inconel 800H Bolts, Inconel 800HT Bolts, Inconel 825 Bolts, Monel 400 Bolts, Monel K500 Bolts, Hastelloy B2 Bolts, Hastelloy C-22 Bolts, Hastelloy C-276 Bolts, Alloy 20 Bolts

High Nickel Alloys
AlloyCommon Name
Related Specification
  BritishEuropeanASTMUNS
Alloy 600Inconel 600 ®BS 3076 NA 142.4816B166N06600
Alloy 601Inconel 601 ® 2.4627B166N06601
Alloy 625Inconel 625 ®BS 3076 NA 212.4856B446N06625
Alloy 718Inconel 718 ® 1.4668B637N07718
Alloy 750Inconel 750 ® 2.4669B637N07750
Alloy 400Monel 400 ® BS 3076 NA132.436F467N04400
Alloy K500Monel K500 ® BS 3076 NA184.4375B865-04N05500
Alloy C276Hastelloy C276 ® 2.4819B574N10276
Alloy 22Hastelloy C22 ® 2.4602B574N06022
Alloy B2Hastelloy B2 ®  B335N10665
Alloy XHastelloy X ® 2.4655B572N06002
Alloy B3Hastelloy B3 ® 2.46B335N10675
Alloy G30Hastelloy G30 ® 2.4603B581N06030
Alloy 50Nitronic 50 ®  A479 XM-19S20910
Alloy 60Nitronic 60 ®  A193 B8SS21800
Alloy 75Nimonic 75 ® 2.4951B637N06075
Alloy 80ANimonic 80A ®BS 4882 NA202.4952B637N07080
Alloy 90Nimonic 90 ®  B408N07090
Alloy 800Incoloy 800 ®BS 3076 NA151.4876B408N08800
Alloy 800HIncoloy 800H ®  B408 
Alloy 800 HTIncoloy 800HT ® 1.4959B408N08811
Alloy 825Incoloy 825 ® BS 3076 NA162.4858B425N08825
Alloy 925Incoloy 925 ®  B805N09925
Alloy DSIncoloy DS ®BS 3076 NA171.4862 N08330

 

Other Nickel Alloy Grades :
Nickel Base Alloys: Monel 400, R405, K500, 501, Nickel, Duranickel, Inconel 600, X-750, Incoloy 800, Hastelloy B, C, Copel, 35-15, Nichrome
High-Temp Alloys: Discaloy, 19-9 DL, 16-25-6, A286, Titanium, Nimonic 80, Mulitmet, Haynes 25, Greek Ascalloy, Unitemp 252, Udimet 500, Rene 41, Inco 700, Inco 901, Hastelloy X, 235, Waspaloy, RA 330

TYPES OF NICKEL ALLOYS FOR FASTENERS:
Monel:

  • 400
  • 405
  • K500

Inconel:

  • 600
  • 617
  • 625
  • 718
  • X750

Incoloy:

  • 800
  • 800H
  • 800HT

Hastelloy:

  • B2
  • C22
  • C276
  • X

Nickel 200
Alloy 20
Rene 41
Waspoloy
Haynes 242
A286

Coating

Our range of industrial coating and finishes includes:

ZincPhosphate
Zinc ClearSheradized
Zinc and Yellow/BichromateZinga
Zinc NickelChemical Galvanising
Zinc ElectroplatingCadmium
PTFE (Xylan*)Chromium
NickelElectroless Nickel Plating
Cermaic Coating (Xylar)Magnigard
SermaguardManganese Phosphating
Hot Dip GalvanisingMolybdenum Disulphide
SilverEpoxy Coatings
Molykote 

Following types of coating are used for Fasteners

  • Electrolytic galvanizing
  • Hot-dip galvanizing
  • Mechanical galvanizing
  • Zinc phosphating
  • Magnesium phosphating
  • Cadmium plating
  • Zinc-Nickel anticorrosion treatment
  • Electroless Nickel plating
  • Electrolytic Nickel plating
  • Burnishing
  • Geomet
  • PTFE Teflon Xylan coating
  • Carbon-ceramic coatings (Xylar + Xylan)
    • Hot Dipped Galvanizing Fasteners
    • Phosphate Fasteners
    • Teflon Fasteners
    • Xylon Fasteners
    • Zinc Fasteners
    • Cadmium Fasteners

Surface Coating

Mirror BuffedHot Dipped GalvanizingEpoxy CoatingElectro PolishedPassivation
Teflon CoatingOxidizedZinc PlatingChrome Plating 

PTFE FLUOROCARBON

  • (PTFE) a FluoroPolymer that is corrosive chemical and heat resistance, and the world’s most slippery surface.

DACROMET COATING

  • DACROMET 320 is a an aluminium-grey, non-electrolytic, thin coating for anti-rust protection of steel, cast iron and other ferrous metal parts.

HOT DIP GALVANISING

  • Batch hot-dip galvanizing has been the most commonly used method of protecting steel products from corrosion.

NICKEL PLATING

  • Nickel plating (Ni) is used for decoration and corrosion protection of steel, copper, aluminium and magnesium, for smoothing out surfaces.

COBALT PLATING

  • Cobalt plating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes or to prevent corrosion of a metal.

CADMIUM PLATING

  • Electroplated cadmium is a robust and versatile metallic coating. Cadmium is a soft white metal that, when plated onto steel, cast iron.

Application

Technical

Standard

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