Heatfastener is a professional engaged in the production of Hex nuts and custom screws and 23 years of research and development of screw suppliers that supply made-to-order screws per your print.  We have a variety of materials to choose from that include, Carbon Steel, Alloy Steel, Stainless Steel, Aluminum, Titanium, Inconel, Hastelloy, and many others which allow us to manufacture your screws from standard carbon steel to any exotic materials. We also have the capability to do tens of thousands of large runs or short runs. From small miniature machine screws to large diameter hex cap screws, nuts, we can supply your custom part today. In the traditional screw industry, we undertake high-strength, high-precision custom screws. We offer OEM and ODM service to meet clients’ special screw needs

With ISO9001:2008,iso14001:2004, and especially IAFT16949:2009 certification for the automotive industry. Heatfastener offers fully customized custom bolts and screws, custom nuts according to your needs. We can bring your fastener design to reality, and everything according to your requirements.

Hex nuts

Hex Nuts Details

Finished hex nuts are 6 sided nuts with threads in the middle that are meant to mate with a threaded bolt with similar threads. Hex nuts are one of the most common nuts available and are used with anchors, bolts, screws, studs, threaded rods, and on any other fastener that has machine screw threads. Hex is short for hexagon, which means they have six sides.

Heatfastener carries a wide range of finished hex nuts in various grades, materials, and styles. We carry both inches and metrics. If you are looking for an uncommon size, length, or material, it is something we can make for you. We can make your hex nut per your print,We can also manufacture these items in special materials and custom made as below listed:


  • ステンレス - SS302、SS304、SS316、(良い粘り強さ)、ステンレス鋼A2 A4
  • スチール - C45(K1045)、C46(K1046)、C20
  • 真鍮 - C36000(C26800)、C37700(HPb59)、C38500(HPb58)、C27200CuZn37)、C28000(CuZn40)
  • ブロンズ-C51000、C52100、C54400など
  • アルミニウム - Al6061、Al6063など
  • 炭素鋼 – C1006,C1010,C1018,C1022,C1035K,C1045
  • 合金鋼 - SCM435、C10B21、C10B339
  • その他の材料- チタン、UNS C11000 銅、シリコン


  • グレード:グレード4.8、グレード6.8、グレード8.8、グレード10.9、グレード12.9など
  • スタンダードGB、DIN、ISO、ANSI/ASTM、BS、BSW、JIS、メートル、インチ
  • フィニッシュ:プレーン、H.D.G、黒色酸化物、クロム、テフロン、ダクロメット、陽極酸化、ナイロック付き
  • 証明書:ISO9001:2015, ISO14001:2015, IATF16949, ROHS
  • カスタムメイドOEMは顧客のrequirmentsに従って利用できる


  • ヘッドタイプ:フラット、オーバル、バインディング、パン、ラウンド、トラス、ボタン、PF、チーズ、フィリスター、パンワッシャー、シリンダー、六角、インデント六角、ワッシャー
  • ドライブタイプ:プラス, スロット, ファイリップ/スロット, 6ローブ, ピン6ローブ, ポジットドライブ, スクエア, トライアングル, Yタイプ.トライウイング, Sタイプ, Hタイプ, 六角, 5ポイント, 8ポイント, スプライン, スパナ, クラッチ, 六角ピン, トルクスピン
  • 機械ねじ、タッピングねじ、ねじ切りねじ、ねじを形作るねじ切り


Hex nuts are a six‑sided nut and are the most commonly shaped nut today. They are used with anchor shackles, bolts, screws, and other externally threaded components. Hex nuts, in conjunction with these other fasteners, are used to connect both metal and wood components to prevent tension and movement.

Use a hex nut with a screw or hex head bolt to fasten two or more wood or metal parts. Hex nuts are often used in construction for framing or to create a bolted joint. Nylon nuts are nonconductive and offer corrosion resistance and lasting hold at a low cost. A jam nut can be used to lock a standard nut in place when it is not tightened against another surface

Hex Nut Bolt Grade C nuts are used for machines, equipment, or structures with rough surfaces and low precision requirements; Grade A and B nuts are used for machines, equipment, or structures with relatively smooth surfaces and high precision requirements


  • エレクトロニクス
  • 石油化学
  • 消費者製品
  • 交通
  • 農業
  • 重機
  • 建設
  • 自動車
  • メディカル
  • ミリタリー
  • 航空宇宙
  • 石油・ガス

Types of Hex nuts we supply including

  • Hex flange nut
  • titanium hex nut
  • aluminum hex nut
  • plastic hex nut
  • brass hex nut
  • heavey hex nut
  • stainless steel hex nut
  • slotted hex nut
  • large hex nut
  • self locking hex nut

We supply all kinds of custom hex nuts. from small to large.ISO4034 Hexagon Nuts Dimensions sizes chart

hex nut chart
Hex nut dimension
hex nut size chart




深セン熱金物有限公司は、2000年に設立された中国の大手カスタムねじメーカーです。私達は注文ねじ、保証ねじ、Sems ねじ、シカゴねじ、溶接ねじ、長いねじ、マイクロねじ、親指ねじ、止めねじ、注文のボルト、キャリッジ・ボルト、ナットおよび他の注文の締める物を専門にします。業界経験20years以上で。航空宇宙産業、自動車産業、エレクトロニクス、機械電気製品、ロボット、医療産業、通信産業、アウトドアスポーツ製品、スマート家電など、20000社以上のお客様にサービスを提供してきました。


What is the difference between a standard hex nut and a heavy hex nut? A standard hex nut, also referred to as a finished hex nut, has a smaller width across the flats and corners compared to a heavy hex nut, and a heavy hex nut is slightly thicker than a standard hex nut of the same nominal size.

The 2H hex nut is a specially designed medium carbon steel fastener falling under the ASTM A194 standards, and should only be used in applications where the advantages are fully realized. The 2H hex nut bears a clear mark on the fastener face, indicating the grade (2H).

The jam nut essentially acts as the “other object”, as the two nuts are tightened against each other. They can also be used to secure an item on a fastener without applying force to that object. This is achieved by first tightening one of the nuts onto the item.

Nylon insert lock nuts—also known as nylon nuts and stop nuts—are a prevailing torque, locking nut that resists loosening caused by vibration and normal use. Unlike free-spinning hex nuts, lock nuts make use of a deforming elastic or metal material to stay in position against torque and shock

Hex Flange Nuts は hex nuts with a wide flanged portion near one end that acts as an integrated non-spinning washer. Flange nuts are used to spread the load placed on the nut over a wider surface area to prevent damage to the installation material

Hexagonal nuts are generally made from steel that has been specially cut with the help of a steel cutting machine. The entire process is relatively quick, and thousands of nuts can be produced within a matter of minutes.brass, copper, stainless steel, titanium, aluminum is also can make hex nut