Hex Jam/ Lock Nut

DIN 439, DIN 936, ANSI B18.2.2

Hex jam nuts from Sturdfix are thin nuts which have the same dimensions as the standard hex nut for the head alone. Its primary application lies in fastening the standard nut into place by being threaded onto a bolt and made to run tight against the parent nut. This will ensure that the bolts do not move out of place and will be securely held against vibrations and small and constant movements. In another use, these nuts are used as a leveler to even out surfaces of operations.

It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear. Since these nuts are galvanised, they are incredibly durable can be easily used in high strength applications as long as the axial pressure on the body is low. They are also corrosion resistant. These nuts are mostly used to fasten soft materials which will break if a thicker fastener is used.

Technical Specification
Size:
M14 to M48 1/4″-2″
Materials:
Carbon Steel, Alloy Steel, MS, Copper, Brass & Stainless Steel (SS 304,SS 302, SS 316)
Finish:
White Zinc Plated, Yellow Zinc Plated, Auto Black Plated, Chrome Plated & other as per customer requirement
NOMINAL DIAMETER THREAD PITCH WIDTH S WIDTH E THICKNESS M BEARING DIAMETER DW THICKNESS C
Metric Hex Jam Nuts
Max Min Max Min Max Min Min C Min
M5 × 0.8 8 7.78 9.24 8.79 2.7 2.45 6.9
M6 × 1 10 9.78 11.55 11.05 3.2 2.9 8.9
M8 × 1.25 13 12.73 15.01 14.38 4 3.7 11.6
aM10 × 1.5 15 14.73 17.32 16.64 5 4.7 13.6
M10 × 1.5 16 15.73 18.48 17.77 5 4.7 14.6
M12 × 1.75 18 17.73 20.78 20.03 6 5.7 16.6
M14 × 2 21 20.67 24.25 23.35 7 6.42 19.6
M16 × 2 24 23.67 27.71 26.75 8 7.42 22.5
M20 × 2.5 30 29.16 34.64 32.95 10 9.1 27.7 0.8 0.4
M24 × 3 36 35 41.57 39.55 12 10.9 33.2 0.8 0.4
M30 × 3.5 46 45 53.12 50.85 15 13.9 42.7 0.8 0.4
M36 × 4 55 53.8 63.51 60.79 18 16.9 51.1 0.8 0.4
METRIC HEAVY HEX NUTS
M12 × 1.75 21 20.16 24.25 22.78 12.3 11.9 19.2 0.8 0.4
M14 × 2 24 23.16 27.71 26.17 14.3 13.6 22 0.8 0.4
M16 × 2 27 26.16 31.18 29.56 17.1 16.4 24.9 0.8 0.4
M20 × 2.5 34 33 39.26 37.29 20.7 19.4 31.4 0.8 0.4
M22 × 2.5 36 35 41.57 39.55 23.6 22.3 33.3 0.8 0.4
M24 × 3 41 40 47.34 45.2 24.2 22.9 38 0.8 0.4
M27 × 3 46 45 53.12 50.85 27.6 26.3 42.8 0.8 0.4
M30 × 3.5 50 49 57.74 55.37 30.7 29.1 46.6 0.8 0.4
M36 × 4 60 58.8 69.28 66.44 36.6 35 55.9 0.8 0.4
M42 × 4.5 70 67.9 80.83 77.41 42 40.4 64.5 1 0.5
M48 × 5 80 77.6 92.38 88.46 48 46.4 73.7 1 0.5
M56 × 5.5 90 87.2 103.92 99.41 56 54.1 82.8 1 0.5
M64 × 6 100 96.8 115.47 110.35 64 62.1 92 1 0.5
M72 × 6 110 106.4 127.02 121.3 72 70.1 101.1 1.2 0.6
M80 × 6 120 116 138.56 132.24 80 78.1 110.2 1.2 0.6
M90 × 6 135 130.5 155.88 148.77 90 87.8 124 1.2 0.6
M100 × 6 150 145 173.21 165.3 100 97.8 137.8 1.2 0.6