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Jam Nuts

 
Jam Nuts A Jam nut is similar to hex nut but typically half as tall as a standard Hex nut. It is also used in installations where a standard hex nut would not fit. Hex jam nuts have two common applications. A jam nut can be threaded onto a bolt and run tight against the standard nut which will lock the nut in place and prevent it from backing off. Jam nuts are sometimes used for leveling purposes as well.
 JF Engg Manufactures Jam Nuts in almost all Material Grades including Stainless Steel Alloy Steel Carbon Steel, Nickel Alloy like Inconel, Monel, Incoloy, Hastelloy C, Alloy 20,Cupro Nickel, AISI 904L,Aluminum, Aluminum Bronze, Copper, Phosphor Bronze, Silicon Bronze, Brass, Titanium, Duplex Steel & Super Duplex Stainless Steel grades. Jam Nuts are preferably Manufactured as per DIN 935 Standard, DIN 439B, DIN 934,ISO 4035 etc.
 
 
Jam Nut Dimensions
Nominal Size F C H Part Numbers
Width Across Flats Width Across Corners Thickness
Basic Max Min Max Min Basic Max Min Black Galvanized
1/2 3/4 0.750 0.736 0.866 0.840 5/16 0.323 0.302 11827 11828
5/8 15/16 0.938 0.922 1.083 1.051 3/8 0.387 0.363 11829 11830
3/4 11/8 1.125 1.088 1.299 1.240 27/64 0.446 0.398 11831 11832
7/8 15/16 1.312 1.269 1.516 1.447 31/64 0.510 0.458 11833 18834
1 11/2 1.500 1.450 1.732 1.653 35/64 0.575 0.519 11835 11836
11/8 111/16 1.688 1.631 1.949 1.859 39/64 0.639 0.579 11837 11838
11/4 17/8 1.875 1.812 2.165 2.066 23/32 0.751 0.687 11839 11840
13/8 21/16 2.062 1.994 2.382 2.273 25/32 0.815 0.747 19678 19679
11/2 21/4 2.250 2.175 2.598 2.480 27/32 0.880 0.808 11841 11842
Dimensions per ASME B18.2.2 1987 (1999)
 
Specifications:
MFG. Standard IS/ANSI/ASME/DIN
Range Size M3 - M48 and also available in all customized sizes.
Material(All Grade) Mild Steel, Stainless Steel, Carbon Steel, Alloy Steel, Brass, Copper, Duplex & Super Duplex Nuts, Aluminium, Hastelloy, Incoloy, Inconel, Monel.
Nickel Alloy
Grade: UNS 2200 (Nickel 200) / UNS 2201 (Nickel 201), UNS 4400 (Monel 400), UNS 8825 (Inconel 825), UNS 6600 (Inconel 600) / UNS 6601 (Inconel 601), UNS 6625 (Inconel 625), UNS 10276 (Hastelloy C 276), UNS 8020 (Alloy 20 / 20 CB 3)
Stainless Steel: Standard: ASTM / ASME A/SA 194
Grade: 304, SS347, SS316, SS321, A2, A4
Alloy Steel: Standard: ASTM / ASME A/SA 194 Gr
Grade: 6, 7/ 7M, 16, 2, 2HM, 2H, Gr6, 7, 7M
Duplex Steel:
UNS No.
S31803, S32205
Coating
Hot Dipped Galvanizing
Phosphate
Teflon
Xylon
Zinc
Cadmium
Surface Finish Blackening, Cadmium zinc plated, Galvanized, Hot dip Galvanized, Nickel Plated, Buffing, etc.
Application All Industry
Die forging Closed die forging, open die forging, and hand forging.
Threads Metric, BSW, BSF, UNC, UNF, and as per costumers requirement.
 
Nuts
Finished Hex Nuts | Finished Hex Jam Nut | Lock Nuts | Nyloc Nuts / Nylon Nuts
Heavy Hexagon Nuts | Hex Jam Nuts | Coupling Nuts | Cage Nuts