Tungsten Fastener Manufacturer, Supplier, Stockist – Screws, Threaded Rod, Bolts, Nuts, Washers, Anchor – ASTM B777 Tungsten Fastener Dealers, Best Quality!

• We are a leading professional manufacturer and supplier of various types of tungsten fasteners (Sizes M6 to M72) such as bolts, nuts, screws, threaded rods, washers, rivets, anchors, cotter pins, clevis pins, hose clamps, and metal stamping’s. We also produce non-standard inch and metric fasteners according to customer drawings and samples. We supply DIN, EN, ISO, ANSI, ASME, ASTM, BS, JIS, UNI and more metric and inch standard fasteners, non-standard and customized fasteners – DIN (912, 931, 933, 934, 125, etc.); ISO (4014, 4017, 4032, 4035, etc.); ASME (B18.2.1, B18.2.2, B18.2.3, etc.).
• Standard specification for Tungsten Nuts, Bolts and Fasteners is ASTM B777.
• The major grades of tungsten nuts, bolts and fasteners are Pure tungsten (99.95%), Tungsten copper (WCu), High density tungsten (WNiFe and WNiCu).
• Manufacturing Process of  Tungsten Nuts, Bolts and Fasteners: – To achieve the high precision requires, our tungsten bolt/screw, nut and washer are produced by the following manufacturing techniques:
  • Lathing and CNC lathing – for surface and threads
  • Milling and CNC milling – for screw’s head
  • Drilling and punching – for washers
  • Threads rolling – for threads
• For screw and bolts, we can offer full threads, half threads or particularly according to your drawing. Washer and spacers are precision cut from sheet products or stamped by designed molds. Rivets are pins are produced from wire or rods, by further cutting, bending or punching.
• Tungsten fasteners are usually made from tungsten alloys per ASTM B777, and range from 90% to 97% pure tungsten, alloyed with nickel and copper or nickel and iron.
• All tungsten nuts, bolts and fasteners offered here are in line with high quality and competitive price. We’re a leading tungsten nuts, bolts and fasteners manufacturer and distributor in India. Please rest assured to wholesale quality products at stock price from our factory. We specialize in tungsten nuts, bolts and fasteners manufacturing and are made to requested size & tolerance, or to specific drawing.
• Tungsten fasteners are known for their extreme high density; because of this unique attribute, they are often used for balancing rotating parts. Tungsten’s high mass also makes these fasteners radiopaque. This allows tungsten fasteners to block radiation and show up well on x-rays – even better than lead. Another unique attribute of tungsten is its extremely high melting point of 3420°C. The high temperature stability of tungsten fasteners make them ideal for some of the hottest vacuum furnace environments. Beyond their high mass and temperature stability, tungsten fasteners are also very corrosion resistant.
• We are manufacturing tungsten fasteners by following a stringent quality control program and standards which assure good surface and close dimensional tolerances. We are a global industry leading provider of carbon steel, alloy steel and stainless steel fastener solutions and have obtained ASME Quality and ISO 9001:2015 Certifications.
• All our fastener products are supplied with 3.1 specific test certificates, according to EN 10204. Certification according to 3.2 can be agreed at the time of ordering. Metallica makes it easy for you to source top quality steel fasteners at the lowest prices.
• Common types of Tungsten Fasteners
  • Heads of bolt and screw – hexagon, hex flange, spherical, cap, square, pan, countersunk, tapered, button
  • Threads of bolt and screw – full threaded, half threaded
  • Drive inserts of screw- hex socket, square socket, slotted, torx, cross recessed
  • Stud – threaded, double end threaded
  • Nut – hex, hex flange, hex thin, square, cap
  • Washer – plain, flat, spring

Production and Stock Range of Tungsten Nuts/Bolts/Fasteners

Tungsten Nuts/Bolts/Fasteners Grade Chart

*Properties may vary according to size and shape of part and production conditions. Figures shown are rounded and are typical for coupons (to fig.19 of ASTM E8) measured in accordance with ASTM B777-15; they are offered without warranty or guarantee. It is for the customer to satisfy itself of the suitability of the products for its own particular purposes and environmental conditions.

Tungsten Carbide Nuts/Bolts/Fasteners Grade Chart

Chemical Properties of Tungsten Nuts/Bolts/Fasteners

Most of tungsten chemical compounds are Tungsten oxides and tungsten trioxides(WO3), tungsten oxides are always named tungsten intermediate products – they are tungstic acid, ammonium paratungstate (APT, tungsten oxide content 88.5% );ammonium metatungstate (AMT), sodium tungstate, yellow tungsten oxide (YTO),blue tungsten oxide (BTO), tungsten trioxide (WO3), violet tungsten oxide (VTO). The other tungsten chemical compounds are most often used industrially as tungsten catalysts, there are tungstic anhydride, pure tungsten oxide, extra pure tungsten oxide (refined tungsten oxide) yellow-green tungsten oxide, Tungstic acid anhydride (Wolframic acid anhydrous, Wolframic acid anhydride), puratronic tungsten(vi) oxide, etc.

Mechanical, Physical and Thermal Properties of Tungsten Nuts/Bolts/Fasteners

What is Tungsten?

Tungsten is known as “wolfram” or “industrial tooth” or “industrial salt” because both of its melting point and specific gravity are much higher than other metals, while its hardness is only second to diamond. Tungsten alloy comes in two ranges – magnetic (the HE range) and non-magnetic (the HA range). With densities up to 18.5gcm, these grades are the prime choice for adding balance weights, ballast or vibration damping mass where space is limited.

The high density of tungsten alloy also delivers effective radiation shielding particularly against X-ray and gamma radiation. We also provide a specialist tungsten alloy grade (HM 490) for hot metal applications which offers good hot wear resistance.

All tungsten alloy grades are reasonably corrosion resistant in both acid and alkaline environments and can easily be plated or painted if necessary. They are easy to clean, non-toxic and non-radioactive.

Tungsten and tungsten products are mainly used in the fields of tungsten steel, tungsten materials, tungsten chemicals and cemented carbide, wherein cemented carbide has the hugest demand for tungsten. The demand of cemented carbide for tungsten occupies 72% in the European market, 66% in the Japanese market and 54% in the Chinese market.

Its good properties make tungsten an important raw material used in high-temperature applications. For example, good electrical conductivity makes high purity tungsten has a wild application in TFT-LCD screens.

Most tungsten is consumed for the production of tungsten carbide (WC), one of the hardest carbides. Tungsten alloys are also widely used in filaments in incandescent light bulbs, electric contacts, arc- welding electrodes, radiation shielding, and aerospace industry.

Magnetic tungsten alloy
Manufactured with a binder of iron and nickel, our magnetic alloys have a tungsten content of 90-97% by weight. These are suitable for many situations where a high density material is required.

Non-magnetic tungsten alloys
For non-magnetic alloys, copper and nickel are the binding agents, with a tungsten content in the range of 90-95%. These non-ferromagnetic alloys are used in a variety of applications, including medical scanners.

Technical data
Tungsten alloy conforms to the internationally recognized standard ASTM B777-15 and AMS 7725E the Aerospace Materials Specification. The non-magnetic grades have been proven to be non-magnetic through independent tests.

We deal in all types of Tungsten products such as:-

Properties of Tungsten Nuts/Bolts/Fasteners

• Tungsten is a lustrous and silvery white metal.
• The bulk metal resists attack by oxygen, acids and alkalis.
• Tungsten has the highest melting point of any metal.
• Tungsten is used in filaments in incandescent light bulbs, it is also used in electric contacts and arc-welding electrodes.
• Low electronic  function
• Good  conductivity
• Good  electron emission ability
• Good  mechanical cutting performance
• High  elastic modulus, Low vapor pressure
• High  recrystallization temperature

Difference Between Tungsten and Titanium

Which material is the strongest depends on where it is going to be used. There may be an application where a high yield strength is vital but the compressive strength is a non-factor. Understanding the application is essential to selecting the proper materials. In terms of tensile strength, tungsten is the strongest out of any natural metal (142,000 psi). But in terms of impact strength, tungsten is weak — it’s a brittle metal that’s known to shatter on impact. Titanium, on the other hand, has a tensile strength of 63,000 psi. But when you figure in titanium’s density and make a pound-for-pound comparison, it beats tungsten. Looking at titanium in terms of compression strength, it scores much lower on the Mohs scale of hardness.

Applications of Tungsten Nuts/Bolts/Fasteners

*Tungsten Products are also used in Chemical Industries, Cemented Carbide, Alloys, Electronics and Electrical Industries.

Types of Tungsten Products