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Sunbelt Stud Welding
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Tapped Threaded Internally Reduced Base - Arc Weld Stud

For a quote or to order, please specify:
Product Code:Major Diameter:Length:*Thread Tap:Thread Depth:Base Diameter:Base Length:
AINSpecify ZSpecify LSpecify CSpecify ASpecify DSpecify B
Tapped Reduced Base Arc Weld Stud
Tapped Reduced Base

Tapped Threaded Internally Reduced Base (TIR) Weld Studs are available in mild steel and stainless steel materials. As the majority of TIR studs are made to each customer’s order, the customer can specify all dimensions.

Coarse and fine threads are available in both imperial (UNC-2B and UNF-2B) and ISO metric (Class 6g) sizes. The imperial coarse threads are depicted below (UNC-2B).

TIR studs are used to secure components to larger structures and or as a standoff. The reduced weld base diameter may satisfy application needs and or equipment limitations.

Stud SpecificationsStandard Accessories
Major DiameterMax. Thread TapMin. Thread DepthMinimum Length*Base DiameterBase LengthFerruleFootGripChuck
ZCALDBP/NP/NP/NP/N
0.3751/4 - 200.2500.8280.2500.375F025‑LPB‑1NGN‑025CN‑037
0.5003/8 - 160.3751.0150.3750.375F037-LPB-1NGN-037CN-050
0.6251/2-130.3751.2500.5000.547F050-LPB-1NGN-050CN-062
0.7501/2-130.3751.2500.5000.547F050-LPB-1NGN-050CN-075
0.8755/8-110.5001.7030.6250.797F062-LPB-2NGN-062CN-087
1.0003/4-100.5001.8750.7500.922F075-LPB-2NGN-075CN-100
Note, the minimum length (L) is reduced when smaller thread sizes are used compared to what is shown.
MATERIALMILD STEELSTAINLESS STEEL
C - 0.23% max.P - 0.04% max.AISI grade - 302/304/305/316 std.
Mn - 0.90% max.S - 0.05% max.Other grades available upon request.
MECHANICAL PROPERTIESTensile75,000 psi (min.)Values for various grades available upon request.
Yield64,000 psi (min.)
Elongation20% (in 2 inches)
PLATINGPlating is not standard. Cadmium, Copper, Nickel, and Zinc available upon customer request.Does not apply to Stainless.