OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H4 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for multiple materials, specified as 1"-8 UNC, H4 / 2B-3B, with 4 flutes and V Coated Powdered Metal construction (MPN 31504008). 3G Electric interprets this…
SKU 3G-OTH-281091
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for multiple materials, specified as 1"-8 UNC, H4 / 2B-3B, with 4 flutes and V Coated Powdered Metal construction (MPN 31504008). 3G Electric interprets this demand and sources the genuine OSG product, backed by specialist expertise across 14 industrial departments.
Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap is used to cut internal threads in multiple materials before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce stripped threads in metal and composite components.
What are the specifications of the OSG STI Tap 31504008?
The OSG STI Tap 31504008 has a UNC thread size of 1"-8, a thread limit of H4 / 2B-3B, 4 flutes, and a spiral-flute design. It is made from V-coated powdered metal for enhanced wear resistance and chip evacuation in multiple materials.
Where to buy OSG STI Taps worldwide?
You can source OSG STI Taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG 31504008 or other thread insert taps.
How to select the correct OSG STI Tap for thread inserts?
To select the correct OSG STI Tap, match the tap thread size and pitch to the insert's internal thread specification. For the 31504008, use a 1"-8 UNC insert. Ensure the tap's thread limit (H4 / 2B-3B) aligns with your required class of fit. Always verify material compatibility and coating for optimal tool life.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















