#4-40 Resistance Weld Studs

Resistance or Projection Weld Studs can come in a variety of shapes depending on the application, but the common factor is that the welding process is accomplished by passing a current through the weld stud into the base material. The current heats the stud and base, and usually pressure is applied. Many of these types of studs have small projections on the underside of the stud to concentrate the current.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
SWACOOHResistance/Projection Weld Stud300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/24-40x1/2 weld stud w/fl ss1808
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AmericanNYResistance/Projection Weld Stud300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/8weld flange stud 18-8 304500
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AmericanNYResistance/Projection Weld StudSteelPlain#4-40 x 7/16weld b2000
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OlanderCAResistance/Projection Weld Stud300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/84-40 x 3/8 weld stud ss no flange62
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OlanderCAResistance/Projection Weld Stud300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 3/44-40 x 3/4 weld stud ss flanged30
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AFIFLResistance/Projection Weld Stud316, 317, A4 StainlessPlain#4-40 x .2814-40x.281 weld screw 316 ss275
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