We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H3 / 2B-3B - Spiral-Flute STI Taps for Multiple Materials
OSGSpiral-Flute STI Taps for Multiple Materials

OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H3 / 2B-3B

SKU 3G-OTH-281108

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H3 / 2B-3B
Category
Spiral-Flute STI Taps for Multiple Materials
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

OSG
Manufacturer Part Number
31501508
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

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 to repair or reinforce threaded holes in aluminum, steel, and cast iron.

What are the specifications of the OSG STI Tap 31501508?

The OSG STI Tap 31501508 has a thread size of 3/8"-24 UNF, a spiral flute design, and 3 flutes. It is ground to H3 / 2B-3B tolerance for precise thread fit. The manufacturer part number is 31501508, and it is designed for multiple materials including steel and aluminum.

Where to buy OSG STI Tap 31501508 worldwide?

You can source the OSG STI Tap 31501508 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 on this spiral-flute tap for thread inserts.

How to select the correct OSG STI tap for thread inserts?

To select the correct OSG STI tap, match the thread size and pitch to the insert you plan to install. For the 31501508, use a 3/8"-24 UNF insert. Ensure the tap tolerance (H3 / 2B-3B) aligns with your required thread class. Always verify material compatibility and use proper tapping lubricant.

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

OSG 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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H3 / 2B-3B, 3 Flute (MPN 31501501). Key specifications — attr1299996: H3 / 2B-3B.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H3 / 2B-3B, 3 Flute (MPN 31501501). Key specifications — attr1299996: H3 / 2B-3B.
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H2 / 2B-3B, 3 Flute (MPN 31501408). Key specifications — attr1299996: H2 / 2B-3B.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H2 / 2B-3B, 3 Flute (MPN 31501408). Key specifications — attr1299996: H2 / 2B-3B.
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H2 / 2B-3B, 3 Flute (MPN 31501401). Key specifications — attr1299996: H2 / 2B-3B.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-24 UNF, H2 / 2B-3B, 3 Flute (MPN 31501401). Key specifications — attr1299996: H2 / 2B-3B.
OSG Screw Thread Insert STI Tap: Spiral Fute, 5/16"-18 UNC, H3 / 2B-3B, 3 Flute (MPN 31500908). Key specifications — attr1299996: H3 / 2B-3B.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 5/16"-18 UNC, H3 / 2B-3B, 3 Flute (MPN 31500908). Key specifications — attr1299996: H3 / 2B-3B.
OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H3 / 2B-3B, 3 Flute (MPN 31501808). Key specifications — attr1299996: H3 / 2B-3B.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H3 / 2B-3B, 3 Flute (MPN 31501808). Key specifications — attr1299996: H3 / 2B-3B.
OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-20 UNF, H3 / 2B-3B, 3 Flute (MPN 31502201). Key specifications — attr1299996: H3 / 2B-3B.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-20 UNF, H3 / 2B-3B, 3 Flute (MPN 31502201). Key specifications — attr1299996: H3 / 2B-3B.

More from OSG

View all OSG parts →
OSG Screw Thread Insert STI Tap: Spiral Fute, M20x2.5 Metric, D5 / 4H-6H, 4 Flute (MPN 34501308). Key specifications — attr1299996: D5 / 4H-6H.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M20x2.5 Metric, D5 / 4H-6H, 4 Flute (MPN 34501308). Key specifications — attr1299996: D5 / 4H-6H.
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H4 / 2B-3B, 4 Flute, V Coated Powdered Metal (MPN 31504008). Key specifications — attr1299996: H4 / 2B-3B.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H4 / 2B-3B, 4 Flute, V Coated Powdered Metal (MPN 31504008). Key specifications — attr1299996: H4 / 2B-3B.
OSG Screw Thread Insert STI Tap: Spiral Fute, M2.5x0.45 Metric, D2 / 4H-6H, 2 Flute (MPN 34500208). Key specifications — attr1299996: D2 / 4H-6H.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M2.5x0.45 Metric, D2 / 4H-6H, 2 Flute (MPN 34500208). Key specifications — attr1299996: D2 / 4H-6H.
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H6 / 2B-3B, 4 Flute, V Coated Powdered Metal (MPN 31504108). Key specifications — attr1299996: H6 / 2B-3B.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H6 / 2B-3B, 4 Flute, V Coated Powdered Metal (MPN 31504108). Key specifications — attr1299996: H6 / 2B-3B.
OSG Screw Thread Insert STI Tap: Spiral Fute, M10x1.5 Metric, D4 / 4H-6H, 3 Flute (MPN 34500808). Key specifications — attr1299996: D4 / 4H-6H.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M10x1.5 Metric, D4 / 4H-6H, 3 Flute (MPN 34500808). Key specifications — attr1299996: D4 / 4H-6H.
OSG Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H, 3 Flute (MPN 34500701). Key specifications — attr1299996: D3 / 4H-6H.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H, 3 Flute (MPN 34500701). Key specifications — attr1299996: D3 / 4H-6H.
OSG Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H, 3 Flute (MPN 34500708). Key specifications — attr1299996: D3 / 4H-6H.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H, 3 Flute (MPN 34500708). Key specifications — attr1299996: D3 / 4H-6H.
OSG Screw Thread Insert STI Tap: Spiral Fute, M18x2.5 Metric, D5 / 4H-6H, 4 Flute (MPN 34501208). Key specifications — attr1299996: D5 / 4H-6H.
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M18x2.5 Metric, D5 / 4H-6H, 4 Flute (MPN 34501208). Key specifications — attr1299996: D5 / 4H-6H.