Jam Nut

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Jam Nut

Material: Carbon Steel, Alloy Steel, Stainless Steel
Standard: ASME/ANSI B18.2.2; DIN439
Measurement system: INCH, Metric
Size: 1/4”-3” M6 – M52
Grade / Class:ASTM A563 Gr. A; SAE J995 Gr.2
Thread: M, UNC, UNF
Finish: Black Oxide, Zinc Plated(Clear/Blue/Yellow/Black),H.D.G , Y.Z.P ,Plain, Nickel, Chrome.
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Jam Nut Images

Jam Nut Drawing

Jam Nut Description


Jam nut is often used when a nut needs to be locked in place without clamping against another object. 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. Then the other nut is screwed down on top of the first nut. The inner nut is then slackened back and tightened against the outer nut.
Jam nuts can also be used in situations where a threaded rod must be rotated. Since threaded rods have no bolt heads, it is difficult or impossible to apply torque to a threaded rod. A pair of jam nuts is used to create a point where a wrench may be used.
Jam nuts can be unreliable under significant loads. If the inner nut is torqued more than the outer nut, the outer nut may yield. If the outer nut is torqued more than the inner nut, the inner nut may loosen up

Nuts are internally threaded fasteners that are used with bolts and threaded rods and studs to connect components. Several different nut styles fit a variety of application and installation requirements. Some styles, such as hex nuts, acorn nuts, flange nuts, and coupling nuts, must be tightened with a tool. Others, such as eye nuts, thumb nuts, and wing nuts, can be tightened by hand. Some nuts have a self-locking mechanism, such as a nylon patch or distorted threads, that makes them suitable for applications with a high amount of vibration.

Product name Jam nut
Place of origin China(Mainland)
Brand Name NEWSTARWDH
Port Qingdao or according to requirement
Delivery time Normally in 7-35 days, according to quantity
MOQ 500kgs for each specification
Mark According to customer’s requirement
Our advantage: One-stop shopping; High quality; Competitive price; Timely delivery; Technical support; Supply Material and Test Reports; OEM Samples for free

Jam nut