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Arc Studs

Arc Weld Studs

From container ships transporting vital cargoes to bridges connecting communities, massive structures play a pivotal societal role. Although rarely seen, arc studs are often responsible for holding together these intricate assemblies.

Take your application to new performance levels with high-quality arc studs from Delta Stud Weld. As a leading provider of fastening solutions, we specialize in the quick turnaround of custom arc weld studs manufactured from domestically supplied materials.

View Types of Arc Studs

Importance Of Arc Studs 

Arc studs are headless fasteners joined to a substrate or base material utilizing a highly reliable electric arc welding process. Sometimes called drawn arc studs, these devices are either unthreaded or have external or internal threading. They are typically used in conjunction with a nut to keep together structural materials or bear weight. 

Welded to a workpiece on one side, arc studs don’t twist during tightening and make it easy to obtain accurate torque values. They are perfect for precision applications across an array of industries.

  • Oil and gas
  • Forging and heat treatment 
  • Aluminum and non-ferrous metals
  • Marine 
  • Signage and construction
  • Hardware

Arc Weld Stud Process & Types

Delta Stud Weld is your source for high-performance arc weld studs. We quickly manufacture these fastening devices in a variety of sizes and configurations from various material grades, including mild and stainless steels, supplied by dependable domestic mills.

Stud welding is a process of joining a metal stud to a metal workpiece by heating both parts with an arc of electricity. Unlike other welding processes, it offers faster assembly with fewer steps. 

Our team is comprised of experienced engineering professionals, talented welders, and inspectors with quality-first mindsets. We can supply stainless steel arc studs or mild steel arc studs with an array of custom attributes. 

  • Pitch Diameter
  • Full Thread
  • Full Base
  • Reduced Base
  • Tapped-Full Base
  • Tapped-Reduced Base
  • Non-thread
  • Bent-No Thread
  • Collar
  • Shoulder-threaded
  • Shoulder-No Thread
  • Shoulder-Annular Grove
  • Knurled
  • Shear Connector
  • Headed Concrete Anchor

Inspectors use precision gauges to verify conformance with applicable industry standards or customer requirements. All raw material is checked for accuracy, and Material Test Reports can be supplied with shipments upon request. Orders are audited before load out.

 

 

Types of Arc Studs

Image Product Spec Sheet

PD Studs have a pitch diameter weld base. They are available in diameters 1/4" through 1".

STUD SPECIFICATIONS< FERRULE SPECIFICATIONS<

 

D<

 

MIN L<

 

C<

 

A<
Fillet Dimension<

 

NO.<

 

D<

 

B<

 

G<

 

M<
E< F<
1/4-20< 5/8< .215< 3/8< 5/16< 3/32< PD250< .455< .385< .125< .250<
5/16-18< 43/64< .275< 3/8< 13/32< 7/64< PD312< .535< .445< .125< .250<
3/8-16< 27/32< .330< 3/8< 15/32< 7/64< PD375< .590< .505< .139< .264<
7/16-14< 15/16< .387< 7/16< 17/32< 1/8< PD437< .675< .585< .173< .329<
1/2 -13< 1-1/32< .448< 1/2< 19/32< 5/32< PD500< .740< .650< .206< .362<
5/8-11< 1-13/64< .562< 5/8< 3/4< 3/16< PD625< .910< .785< .277< .433<
3/4< 1-1/2< .680< .796< .920< .250< PD750< 1.15< 1.03< .339< .526<
7/8< 1-3/8< .798< .859< 1.046< .312< PD875< 1.33< 1.21< .406< .593<
1< 1-1/2< .913< .921< 1.187< .375< PD100< 1.53< 1.41< .474< .661<

 

  • PD STUDS have a pitch diameter weld base (C). They are available in diameters 1/4" through 1". All orders for studs include required ferrules.
  • LENGTH Available in required lengths above recommended standard minimums (L). Length is before weld. Stud diameters 1/2" and below will be approximately 1/8" shorter after welding. 5/8" and above will be approximately 3/16" shorter after welding.
  • THREAD Standard thread is UNC2A. Maximum standard thread length is 3 1/2".
  • MATERIAL: Low Carbon Steel
  • Stainless Steel: Studs are also available in weldable stainless steel. Type 304 is the most commonly used. Other grades of stainless steel available when required.
  • ANNEALING: Stud ductility can be increased be annealing to 75 Rockwell B for low carbon steel and 90 Rockwell B for stainless steel.
  • FLUX: Studs 1/4" and over are solid fluxed.

FT Studs are available in diameters 1/4" through 1".

STUD SPECIFICATIONS< FERRULE SPECIFICATIONS<

 

Fillet Dimension<

 

D< MIN L< C< E< F< NO.< D< B< G< M<
10-24< 3/4< .187< 9/32< 3/32< FB187< .390< .305< .234< .390<
1/4-20< 3/4< .187< 23/64< 7/64< FB250< .454< .380< .234< .390<
5/16-18< 3/4< .187< 25/64< 7/64< FB312< .578< .445< .281< .437<
3/8-16< 3/4< .187< 7/16< 1/8< FB375< .637< .505< .281< .437<
7/16-14< 7/8< .187< 37/64< 9/64< FB437< .703< .585< .234< .422<
1/2-13< 7/8< .187< 19/32< 5/32< FB500< .795< .650< .281< .469<
5/8-11< 1 7/8< .187< 51/64< 3/16< FB625< 1.030< .785< .328< .516<
3/4-10< 1 1/8< .187< 15/16< 1/4< FB750< 1.215< 1.030< .469< .656<
7/8-9< 1 1/2< .375< 1 3/32< 5/16< FB875< 1.408< 1.210< .545< .732<

 

  • FT STUDS are available in diameters 1/4" through 1". All orders for studs include required ferrules.
  • LENGTH Available in required lengths above recommended standard minimums (L). Length is before weld. Stud diameters 1/2" and below will be approximately 1/8" shorter after welding. 5/8" and above will be approximately 3/16" shorter after welding.
  • THREAD Standard thread is UNC2A. Maximum standard thread length is 3 1/2".
  • MATERIAL: Low Carbon Steel
  • Stainless Steel: Studs are also available in weldable stainless steel. Type 304 is the most commonly used. Other grades of stainless steel available when required.
  • ANNEALING: Stud ductility can be increased be annealing to 75 Rockwell B for low carbon steel and 90 Rockwell B for stainless steel.
  • FLUX: Studs 1/4" and over are solid fluxed.

FB Studs are available in diameters 1/4" through 1".

STUD SPECIFICATIONS FERRULE SPECIFICATIONS

 

Fillet Dimension

 

D MIN L C E F NO. D B G M D
10-24 25/32 3/16 .187 9/32 3/32 FB135 .390 .305 .234 .390
1/4-20 25/32 1/4 .187 23/64 7/64 FB250 .455 .380 .234 .390
5/16-18 25/32 5/16 .250 7/16 7/64 FB310 .578 .445 .234 .390
3/8-16 25/32 3/8 .265 1/2 1/8 FB370 .640 .505 .234 .390
7/16-14 25/32 7/16 .281 19/32 9/64 FB430 .730 .585 .234 .422
1/2-13 13/16 1/2 .296 11/16 5/32 FB500 .795 .650 .250 .438
5/8-11 31/32 5/8 .359 7/8 3/16 FB620 1.030 .785 .328 .516
3/4-10 1 15/64 3/4 .500 1 1/16 1/4 FB750 1.215 1.030 .469 .656
7/8-9 1 1/2 7/8 .625 1 3/8 5/16 FB870 1.408 1.210 .545 .732
1-8 1 41/64 1 .750 1 3/8 3/8 FB1000 1.610 1.406 .633 .820

RB Studs have a reduced weld base. They are available in diameters 1/4" through 1".

STUD SPECIFICATIONS FERRULE SPECIFICATIONS

 

Fillet Dimension

 

D MIN L C MIN A E F NO. D B G M
1/4-20 7/8 .187 .187 .281 .109 FB187 .455 .380 .265 .39
5/16-18 7/8 .215 .187 .390 .109 FB275 .578 .445 .281 .437
3/8-16 7/8 .275 .250 .437 .125 FB312 .590 .505 .125 .250
1/2-13 1 .330 .250 .593 .156 FB437 .740 .650 .125 .281
5/8-11 1 1/8 .448 .312 .687 .156 FB500 .875 .785 .174 .328
3/4-10 1 1/8 .562 .375 .812 .187 FB625 1.03 .785 .328 .516

TF TAPPED STUDS are internally threaded studs available in diameters 1/4" through 1", and in internal thread diameters from #8-32 through 3/4 10. All orders for studs include required ferrules.

LENGTH Available in required lengths above recommended standard minimums (L). Length is before weld. Stud diameters (D) 1/2" and below will be approximately 1/8" shorter after welding. 5/8" and above will be approximately 3/16" shorter after welding.

THREAD Standard thread is UNC2A. Maximum standard thread length is 1 1/2".

MATERIAL: Low Carbon Steel Stainless Steel: Studs are also available in weldable stainless steel. Type 304 is the most commonly used. Other grades of stainless steel available when required.

PLATING: If plated studs are required, cadmium, zinc and nickel are used to ASTM specifications A165 Type TS, A164 Type RS and B-456. Welding end of stud is not plated to prevent welding contamination. Information on other plating materials available upon request.

FLUX: TR Studs are solid fluxed.

STUD SPECIFICATIONS FERRULE SPECIFICATIONS
STUD DIA. D

 

Tap

 

 

MIN L

 

Fillet Dimension

 

 

NO.

 

 

J

 

 

K

 

 

G

 

 

M
C B E F
1/4 8-32 1/4 9/16 .359 .109 FB250 .455 .380 .234 .390
5/16 10-32 9/32 9/16 .437 .109 FB310 .578 .445 .234 .390
3/8 1/4-20 3/8 3/4 .500 .125 FB370 .640 .505 .234 .390
7/16 5/16-18 15/32 7/8 .578 .140 FB430 .703 .585 .234 .422
1/2 3/8-16 9/16 1 .625 .156 FB500 .795 .650 .250 .438
5/8 7/16-14 21/32 1 1/4 .796 .187 FB620 1.030 .785 .328 .516
3/4 1/2-13 3/4 1 1/4 .937 .250 FB750 1.215 1.030 .469 .656
7/8 5/8-11 15/16 1 1/2 1.093 .312 FB870 1.408 1.210 .545 .732

TF TAPPED STUDS are internally threaded studs available in diameters 1/4" through 1", and in internal thread diameters from #8-32 through 3/4 10. All orders for studs include required ferrules.

LENGTH Available in required lengths above recommended standard minimums (L). Length is before weld. Stud diameters (D) 1/2" and below will be approximately 1/8" shorter after welding. 5/8" and above will be approximately 3/16" shorter after welding.

THREAD Standard thread is UNC2A. Maximum standard thread length is 1 1/2".

MATERIAL: Low Carbon Steel Stainless Steel: Studs are also available in weldable stainless steel. Type 304 is the most commonly used. Other grades of stainless steel available when required.

PLATING: If plated studs are required, cadmium, zinc and nickel are used to ASTM specifications A165 Type TS, A164 Type RS and B-456. Welding end of stud is not plated to prevent welding contamination. Information on other plating materials available upon request.

FLUX: TR Studs are solid fluxed.

STUD SPECIFICATIONS FERRULE SPECIFICATIONS

 

D

 

G

 

A

 

MIN L
Tap

 

NO.

 

D

 

B

 

G

 

M
C B
3/8 .250 7/16 1 1/2 14-20 3/8 FB250 .455 .380 .125 .250
1/2 .375 7/16 1 1/2 3/8-16 9/16 FB375 .675 .585 .125 .250
5/8 .437 1/2 1 1/2 7/16-14 21/32 FB437 .740 .650 .125 .281
3/4 .500 1/2 1 1/2 1/2-13 3/4 FB500 .875 .785 .174 .328
7/8 .625 5/8 2 5/8-11 15/16 FB625 1.030 .921 .187 .375
1 .750 5/8 2 1/2 3/4-10 1 FB750 1.203 1.043 .187 .375

NT STUDS are available in diameters 3/16" through 1". All orders for studs include required ferrules.

LENGTH Available in required lengths above recommended standard minimums (L). Length is before weld. Stud diameters 1/2" and below will be approximately 1/8" shorter after welding. 5/8" and above will be approximately 3/16" shorter after welding.

MATERIAL: Low Carbon Steel

Stainless Steel: Studs are also available in weldable stainless steel. Type 304 is the most commonly used. Other grades of stainless steel available when required.

ANNEALING: Stud ductility can be increased be annealing to 75 Rockwell B for low carbon steel and 90 Rockwell B for stainless steel.

FLUX: Studs 1/4" and over are solid fluxed.

STUD SPECIFICATIONS FERRULE SPECIFICATIONS

 

D

 

MIN L
Fillet Dimension

 

NO.

 

D

 

B

 

G

 

M
E F
3/16 3/4 .281 .093 FB187 .390 .305 .234 .390
1/4 3/4 .359 .109 FB250 .455 .380 .234 .390
5/16 3/4 .437 .109 FB312 .578 .445 .234 .390
3/8 3/4 .500 .125 FB375 .640 .505 .234 .390
7/16 3/4 .578 .140 FB437 .703 .585 .234 .422
1/2 7/8 .627 .156 FB500 .795 .650 .250 .438
5/8 1 .796 .187 FB625 1.030 .785 .328 .516
3/4 1 3/8 .937 .250 FB750 1.215 1.030 .469 .656
7/8 1 1/2 1.093 .312 FB875 1.408 1.210 .545 .732
1 1 1/2 1.312 .375 FB1000 1.610 1.406 .633 .820

B-NT Arc Studs

STUD SPECIFICATIONS FERRULE SPECIFICATIONS

 

D

 

Min. L

 

Min. Y

 

Min. R
Fillet Dimension Ferrule No.

 

D

 

B

 

F

 

M
E F
3/8 1 1/2 1 17/32 .218 .500 .125 FB370 .640 .505 .234 .390
1/2 1 3/4 1 11/16 .250 .627 .156 FB500 .795 .650 .250 .438
5/8 1 7/8 2 .312 .796 .187 FB620 1.030 .785 .328 .516
3/4 2 3/4 2 13/16 .500 .937 .250 FB750 1.215 1.030 .469 .656
7/8 3 1/2 3 3/8 .500 1.093 .312 FB875 1.408 1.210 .545 .732

CK Collar Studs are threaded studs with a collar separating the weld base and the thread.

STUD SPECIFICATIONS FERRULE SPECIFICATIONS
D STD. B MIN L C E H NO. D B G M
1/4 .375 .500 .215 .500 .093 CL250 .875 .785 .110 .235
5/16 .375 .500 .275 .562 .093 CL312 .875 .785 .095 .235
3/8 .500 .500 .330 .625 .109 CL375 .875 .785 .095 .235
1/2 .625 .593 .448 .750 .140 CL500 1.030 .921 .125 .250

SB Shoulder Studs are threaded studs with a weld base diameter greater than the thread diameter.

STUD SPECIFICATIONS FERRULE SPECIFICATIONS

 

Fillet Dimension

 

D MIN L C A E F NO. D B G M
1/4 .312 8-32 .437 .359 .109 FB250 .455 .380 .234 .390
5/16 .375 10-24 .500 .437 .109 FB312 .578 .445 .234 .390
3/8 .375 1/4-20 .750 .500 .125 FB375 .640 .505 .234 .390
7/16 .437 5/16-18 .875 .578 .140 FB437 .703 .585 .234 .422
1/2 .500 3/8-16 1.000 .627 .156 FB500 .795 .650 .250 .438
5/8 .625 1/2-13 1.250 .796 .187 FB625 1.030 .785 .328 .516
3/4 .625 5/8-11 1.625 .937 .250 FB750 1.215 1.030 .469 .656
7/8 .750 3/4-10 1.875 1.093 .312 FB875 1.408 1.210 .545 .732

SB-NT Shoulder Studs are studs with a weld base diameter greater than the extension.

STUD SPECIFICATIONS FERRULE SPECIFICATIONS

 

D

 

MIN L

 

ED

 

EL
Fillet Dimension

 

NO.

 

D

 

B

 

G

 

M
E F
5/16 3/8 3/16 3/16 .437 .109 FB312 578 .445 .234 .390
3/8 3/8 3/16 3/16 .500 .125 FB375 .640 .505 .234 .390
1/2 1/2 3/8 45/64 .627 .156 FB500 .795 .650 .250 .438

Knurled Arc Studs

STUD SPECIFICATION FERRULE SPECIFICATION
D L KD FERRULE CODE B D G M
5/16 1" 0.327 FB312 0.445 0.578 0.234 0.390

SC Connector Studs are designed to effectively tie the concrete to the steel beams.

3/4" DIAMETER SHEAR CONNECTOR

 

Stud Specifications
Ferrule Specifications
D H A Type NO. D B F M

 

3/4

 

1 1/4

 

3/8
Flat Surface

 

FB750

 

1.215

 

1.030

 

.469

 

.656
Weld Thru Deck

 

 

WT750

 

 

 

 

 

7/8" DIAMETER SHEAR CONNECTOR

 

Stud Specifications
Ferrule Specifications
D H A Type NO. D B F M

 

7/8

 

1 3/8

 

3/8
Flat Surface

 

FB875

 

4.108

 

1.210

 

.545

 

.732

 

 

 

 

 

 

HA Anchor Studs are designed for welding to flat surfaces or welding in the fillet or to the heel of angles.

STUD SPECIFICATION FERRULE CODE
D A H NO. D B F M
1/4 .187 .500 FB250 .454 .380 .234 .390
3/8 .281 .750 FB375 .640 .505 .234 .390
1/2 .312 1.000 FB500 .795 .650 .250 .438
5/8 .312 1.250 FB625 1.030 .785 .328 .516

Need Arc Accessories?

DSW, Inc. carries a wide range of stud welding accessories including, chucks, ferrules, grips, collets, and connectors.

Arc Accessories

Need CD Accessories?

DSW, Inc. carries a wide range of stud welding accessories including, chucks, ferrules, grips, collets, and connectors.

CD Accessories
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