ARC WELD STUDS: LONG REDUCED BASE ARC FASTENERS

The Long Reduced Base Arc Stud is a threaded weld stud for application with arc stud welding equipment. This type of stud welded fastener is usually flux-loaded on the weld end for studwelding applications. Available in low carbon steel and stainless steel as standards, other special materials and grades are available. Similar to the Standard Thread weld stud, the reduced base style is characterized by external threads for a majority of the weld stud length, and a smaller diameter non-threaded base sized to be less than the full diameter of the threads. For mating part and fit considerations, this type weld stud allows the weld fillet at the base of the welded stud to be maintained, in diameter, at or below the dimension of the thread diameter. Studwelding of the weld stud burns off a portion of the base so that the pre-weld, post-weld length dimensions should be considered. All orders for arc weld studs from Midwest Fasteners include ceramic studwelding ferrules properly sized for the weld stud ordered.

STUD D MIN. L .BD BL MIN FD FH FERRULE CODE 1/4 .3/4 ..187 .375 .281 .109 FS187 5/16 .3/4 ..250 .375 .359 .125 FS250 3/8 .3/4 ..312 .375 .437 .125 FS312 7/16 1 ..375 .375 .500 .140 FS375 .1/2 1 ..437 .437 .578 .140 FS437 5/8 1-1/4 ..500 .500 .656 .156 FS500 .3/4 1-1/2 .625 .718     FS625

THREADS: Standard thread is UNC - 2A (Rolled when possible), Other threads are available upon request. Maximum standard thread length is 3-7/8". MATERIAL: LOW CARBON STEEL   C-0.23% max. P-0.04% max.   Mn - 0.90% max S-0.05% max. STAINLESS STEEL AISI grade - 302/304/305 std. Other grades available upon request. MECHANICAL PROPERTIES:   Tensile 60,000 psi (min.)   Yield 50,000 psi (min.)   Elongation 20% (in 2 inches) Values for various grades available upon request. PLANTING: Plating is not standard.   Copper, nickel, and zine available upon customer request. Does not apply to Stainless. FERRULES: Ferrules are component parts of studs. Not sold separately.

FERRULE CODE B .D E M PART NO FS187 .305 ..390 .125 .250 092 0004 05 FS250 .308 .455 .125 .250 092 0004 06 FS312 .505 .495 .125 .250 092 0004 07 FS375 .585 ..675 .125 .250 092 0004 08 FS437 .650 ..740 .156 .281 092 0004 09 FS500 .785 .875 .156 .281 092 0004 10 FS625 .921 1.030 .187 .375 092 0004 11

TO ORDER OR SPECIFY, GIVE:

1 Product Code............................................................... ARC LRB 2 Diameter....................................................................... D 3 Length.......................................................................... L 4 Material........................................................................