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OSG 31403008 Spiral-Point STI Tap - Spiral-Point STI Taps for Multiple Materials
OSGSpiral-Point STI Taps for Multiple Materials

OSG 31403008 Spiral-Point STI Tap

The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, specified as 5/8"-18 UNF with H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31403008). 3G Electric interprets this demand…

SKU 3G-OTH-284650

Brand
OSG
Item
31403008 Spiral-Point STI Tap
Part Number
31403008
Category
Spiral-Point STI Taps for Multiple Materials
Available to Order
Also known as:31403008OSG
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Technical Specifications

OSG
Manufacturer Part Number
31403008
Type
H3 / 2B-3B, Plug Chamfer
Flute
4
UNF
5/8"-18

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

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, specified as 5/8"-18 UNF with H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31403008). 3G Electric interprets this demand and sources the genuine OSG product, backed by specialist depth in industrial tooling across 14 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 general manufacturing where thread repair or reinforcement is needed.

What are the specifications of the OSG 31403008 STI Tap?

The OSG 31403008 is a spiral-point STI tap with a 5/8"-18 UNF thread, H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is designed for threading holes that will accept screw thread inserts 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 31403008.

How to select the correct OSG STI Tap size?

To select the correct OSG STI Tap, match the tap thread size and pitch to the thread insert you plan to install. For example, the 5/8"-18 UNF tap is for inserts requiring that thread. Always verify the H tolerance class matches your desired thread fit class (e.g., 2B or 3B).

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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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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