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M18 Jam Nuts (DIN 439b)

Hex Jam Nuts have a lower profile than a standard hex nut but have the same dimension across the flats and corners. A hex jam nut can be threaded onto a bolt and run tight against a standard nut which will lock the nut in place and prevent it from backing off. Thus hex jam nuts may sometimes be used as locking nuts.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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EndriesWIHex Jam NutClass 4.8Zinc/ClearM18-1.50M18x1.5 class 4 hex jam nut trivalent clear zinc din 439b25
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Alma BoltMIHex Jam NutPlainM18-1.50m18 x 1.5 x-fine | jam hex nut din 439b27
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Alma BoltMIHex Jam NutPlainM18-2.50m18 x 2.5 | jam hex nut plain din 439b43
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ManscoMIHex Jam NutSteelZinc/ClearM18-1.50M18-1.5 fin hex jam nut triv znc din 439b324
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IPCVAHex Jam NutClass 4.8Zinc/ClearM18-2.5-4M18-2.5 hex jam nuts cl 4 steel cr3 zinc-rohs din 439b19
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MMCCILHex Jam NutClass 4.8PlainM18-2.50hex jam nut din 439b class 4 plain1035
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MMCCILHex Jam NutClass 4.8PlainM18-1.50hex jam nut din 439b class 4 plain992
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MMCCILHex Jam NutClass 4.8Zinc/ClearM18-2.50hex jam nut din 439b class 4 zinc/clear962
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MMCCILHex Jam NutClass 4.8Zinc/ClearM18-1.50hex jam nut din 439b class 4 zinc/clear8130
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MMCCILHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM18-2.50hex jam nut din 439b a2 s/s plain105
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MMCCILHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM18-1.50hex jam nut din 439b a2 s/s plain40
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MMCCILHex Jam Nut316, 317, A4 StainlessPlainM18-2.50m18x2.5 hex jam nut din 439b a4 s/sinquire
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MMCCILHex Jam NutBrassPlainM18-2.50m18x2.5 hex jam nut brass din 439binquire
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MMCCILHex Jam NutClass 4.8PlainM18-1.50m18x1.5 hex jam nut class 04 left hand din 439binquire
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MMCCILHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM18-1.00m18x1 hex jam nut a2 din 439binquire
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MMCCILHex Jam NutClass 4.8PlainM18-1.00m18x1 hex jam nut class 04 plain din 439binquire
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MMCCILHex Jam NutSteelZinc/ClearM18-2.50m18x2.5 hex jam nut class 05 zinc plate din 439binquire
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FTSOHHex Jam NutClass 4.8Zinc/ClearM18-2.50fin hex jam nut 4 zn din 439b100
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MSTCMAHex Jam NutClass 4.8Zinc/ClearM18-1.50m18x1.5 din 439b hex jam nut cl4 stl zn1490
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MSTCMAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM18m18 din 439b hex jam nuts a2ss13
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FastWareSaskHex Jam NutClass 4.8Zinc/ClearM18-1.50hex jam nut class 4 din 439b442
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