OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H6 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for multiple materials, specified as 1"-8 UNC with H6 / 2B-3B tolerance, 4 flutes, and V Coated Powdered Metal construction (MPN 31504108). 3G Electric…
SKU 3G-OTH-281114
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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 with H6 / 2B-3B tolerance, 4 flutes, and V Coated Powdered Metal construction (MPN 31504108). 3G Electric interprets this demand and sources genuine industrial equipment across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.
Frequently Asked Questions
What is the OSG Screw Thread Insert STI Tap used for?
The OSG Screw Thread Insert STI Tap is used to cut internal threads in multiple materials for installing screw thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where strong, replaceable threads are required in softer base materials.
What are the specifications of the OSG STI Tap 31504108?
This OSG STI Tap has a UNC thread size of 1"-8, a tolerance class of H6 / 2B-3B, 4 flutes, and a V coated powdered metal construction. The manufacturer part number is 31504108. It is designed for spiral-flute tapping in multiple materials.
Where to buy OSG STI Tap 31504108 worldwide?
You can source the OSG STI Tap 31504108 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.
How to select the correct OSG STI tap for a thread insert?
Select an OSG STI tap that matches the thread insert's size and tolerance. For a 1"-8 UNC insert, use a tap with H6 / 2B-3B tolerance. Ensure the tap coating suits the workpiece material—V coated powdered metal works well for multiple materials. Always follow the insert manufacturer's recommendations.
Used in
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.















