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OSG 31401708 Spiral-Point STI Tap - Spiral-Point STI Taps for Multiple Materials
OSGSpiral-Point STI Taps for Multiple Materials

OSG 31401708 Spiral-Point STI Tap

The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 31401708, MPN 31401708) is a spiral-point STI tap for multiple materials, with a 7/16"-14 UNC thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. 3G…

SKU 3G-OTH-284754

Brand
OSG
Item
31401708 Spiral-Point STI Tap
Part Number
31401708
Category
Spiral-Point STI Taps for Multiple Materials
Available to Order
Also known as:31401708OSG
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Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
31401708
Type
H4 / 2B-3B, Plug Chamfer
Flute
3
UNC
7/16"-14

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 31401708, MPN 31401708) is a spiral-point STI tap for multiple materials, with a 7/16"-14 UNC thread size, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. 3G Electric interprets demand and delivers this genuine industrial cutting tool across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

What is an OSG Screw Thread Insert STI Tap used for?

An OSG Screw Thread Insert STI Tap cuts internal threads in multiple materials to accept helical wire thread inserts. It is commonly used in aerospace, automotive, and general manufacturing to repair or reinforce tapped holes in aluminum, steel, and cast iron.

What are the specifications of the OSG 31401708 STI Tap?

The OSG 31401708 is a spiral-point STI tap with UNC thread 7/16"-14, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for through-hole tapping in multiple materials and is manufactured under part number 31401708.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI Taps worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner, we provide genuine OSG cutting tools like the 31401708 to industrial buyers across 14 departments, including machining and tooling.

How to select the correct STI tap size for a thread insert?

Select an STI tap that matches the thread insert's nominal size and pitch, such as 7/16"-14 UNC. The tap tolerance (e.g., H4 / 2B-3B) must align with the insert manufacturer's recommendation. Always verify the tap's plug chamfer and flute count suit your material and hole type.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts
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OSG Products

3G Electric supplies OSG spiral-point sti taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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