FCH News

M20 Jam Nuts (DIN 439)

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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FTSOHHex Jam NutClass 4.8PlainM20-2.50fin hex jam nut 4 din 439b17
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FTSOHHex Jam NutClass 4.8Zinc/ClearM20-2.50fin hex jam nut 4 zn din 439b96
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METRO INDOHHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20hex jam nut s/s din 43917
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Marine FastenersFLHex Jam Nut316, 317, A4 StainlessPlainM20-2.50hex jam nut (type-b thin) a4 m20-2.5 din 4391210
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MTPCAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20m20 din 439-s.s a2 hex jam nuts (l.h.)340
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EurolinkSCHex Jam Nut316, 317, A4 StainlessPlainM20m20 din 439 a4 stainless steel hex jam nutinquire
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EurolinkSCHex Jam NutClass 4.8Zinc/ClearM20m20 din 439 cl. 04 zinc plated hex jam nutinquire
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EurolinkSCHex Jam NutClass 4.8GalvanizedM20m20 din 439-b cl.04 hot dip galvanized hex jam nutinquire
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EurolinkSCHex Jam NutClass 4.8Zinc/ClearM20m20 din 439 l.h. thread cl.04 zinc hex jam nutinquire
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EurolinkSCHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20M20 a2 18-8 304 steel hex jam nut din 439inquire
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EurolinkSCHex Jam Nut316, 317, A4 StainlessPlainM20M20 b l.h. thread a4 stainless steel hex jam nut din 439inquire
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EurolinkSCHex Jam NutBrassPlainM20M20 brass hex jam nut din 439inquire
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GLFOHHex Jam NutSteelZinc/ClearM20-2.50M20-2.5 fin hex jam nut stl zc din 439b () ()10
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LightningLAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20-2.50jam nut a-2 ss din 43910
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EurolinkSCHex Jam NutClass 4.8PlainM20m20 din 439 cl.04 hex jam nut hex jam nut80
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MMCCILHex Jam NutClass 4.8PlainM20-2.50hex jam nut din 439b class 4 plain5456
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MMCCILHex Jam NutClass 4.8PlainM20-2.50hex jam nut din 439b class 4 left hand622
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MMCCILHex Jam NutClass 4.8Zinc/ClearM20-2.50hex jam nut din 439b class 4 zinc/clear59912
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MMCCILHex Jam NutBrassPlainM20-2.50hex jam nut din 439b brass plain3
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MMCCILHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20-2.50hex jam nut din 439b a2 s/s plain156
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MMCCILHex Jam Nut316, 317, A4 StainlessPlainM20-2.50hex jam nut din 439b a4 s/s plain3
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MtrcSpecCAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20-2.50M20-2.5 hex jam nut a2-ss din 439stock
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MtrcSpecCAHex Jam NutSteelZinc/ClearM20-2.50M20-2.5 hex jam nut zinc din 439stock
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BHAMALHex Jam NutSteelPlainM20-2.50hex fin jam nut din 439b22
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IRFNJHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20-2.50hex fin jam nut a2 ss din 43940
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IRFNJHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PassivatedM20-2.50hex fin jam nut a2 ss din 439500
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BHAMALHex Jam NutSteelPlainM20-2.50M20-2.5 hex jam nut din 43950
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MTPCAHex Jam NutClass 4.8PlainM20M20 pln hex jam nuts (l.h.) din 439-4228
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ASMCILHex Jam NutClass 4.8Zinc/ClearM20-2.50coarse / iso 4035 cl4 hex jam nut low carb zp din 439b20
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MTPCAHex Jam NutSteelZinc/ClearM20m20 din 439-4 zn hex jam nuts12,688
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MTPCAHex Jam NutSteelPlainM20m20 din 439-4 pln hex jam nuts (l.h.)228
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MTPCAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20m20 din 439-a2-70 s.s hex jam nuts349
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LibertyILHex Jam NutSteelZinc/ClearM20-2.50hex jam nut class 4 plate din 439b39
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Kanebridge ILHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20-2.50m20-2.5 din 439 hex jam nut a2 stainless steel8.750
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MTPCAHex Jam Nut316, 317, A4 StainlessPlainM20m20 din 439-a4 s.s jam nuts200
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Alma BoltMIHex Jam NutSteelPlainM20-2.50m20 x 2.5 din 439b jam hex nut254
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MMCCILHex Jam NutSteelPlainM20-2.50m20x2.5 hex jam nut class 05 plain din 439binquire
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MMCCILHex Jam NutClass 4.8Zinc/ClearM20-2.50m20x2.5 hex jam nut class 04 zinc plate din 439b left handinquire
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MMCCILHex Jam NutSteelZinc/YellowM20-2.50m20x2.5 hex jam nut class 05 zinc yellow din 439binquire
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NorthernMNHex Jam NutSteelZinc/ClearM20-2.50m20-2.5 hex jam nut zinc din 4391
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PENCOMOntHex Jam NutClass 4.8Zinc/ClearM20m20 hex jam nut class 4 zinc din 439-2300
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MSTCMAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20m20 din 439b hex jam nuts a2ss12
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MSTCMAHex Jam NutClass 4.8Zinc/ClearM20m20 din 439b hex jam nut cl4 stl zn113
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LightningLAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20-2.50jam nut a-2 ss din 43910
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CenturyFLHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM20M20.0 18-8 hex jam nuts din 439 ()302
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LightningLAHex Jam NutSteelPlainM20-2.50hex jam nut /iso 4035 din 439115
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CenturyFLHex Jam Nut316, 317, A4 StainlessPlainM20M20.0 a4 stainless hex jam nuts din 439 1312
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