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

3G Electric
RFQ CartGet a QuoteSign inSign up
OSG Spiral Flute Tap: #4-40 UNC, H4 / 2B-3B, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: #4-40 UNC, H4 / 2B-3B, 3 Flute

SKU 3G-OTH-230493

Brand
OSG
Item
Spiral Flute Tap: #4-40 UNC, H4 / 2B-3B, 3 Flute
Category
General Purpose Spiral-Flute Taps
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
2916500
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 the OSG spiral flute tap #4-40 UNC used for?

This OSG spiral flute tap is designed for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, making it ideal for general-purpose tapping in machining, automotive, and industrial maintenance applications.

What are the specifications of the OSG 2916500 tap?

The OSG 2916500 is a #4-40 UNC spiral flute tap with a H4 / 2B-3B tolerance class, 3 flutes, and a modified bottoming chamfer. It is designed for threading blind holes and is suitable for general-purpose tapping in a range of materials.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 2916500 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG cutting tools.

How to select the right tap for a blind hole?

For blind holes, choose a spiral flute tap like this OSG #4-40 UNC, which pushes chips out of the hole. Ensure the chamfer type (modified bottoming) matches your thread depth requirements. Always match tap tolerance (H4 / 2B-3B) to your desired thread class.

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 general purpose spiral-flute taps. 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 Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2911408). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2911408). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #6-32 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2912408). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #6-32 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2912408). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #10-24 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2913408). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #10-24 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2913408). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #8-32 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2912808). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #8-32 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2912808). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #10-32 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2913808). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #10-32 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2913808). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #8-32 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2907808). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: #8-32 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2907808). Key specifications — attr1299826: H2 / 2B-3B.

More from OSG

View all OSG parts →
OSG Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2942200)
OSG
OSG Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2942200)
OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2923808). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2923808). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926401). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926401). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 5003500)
OSG
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 5003500)
OSG Spiral Flute Tap: 5/16"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941300). Key specifications — attr1299826: H6 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941300). Key specifications — attr1299826: H6 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926400). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2926400). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: #10-32 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985505)
OSG
OSG Spiral Flute Tap: #10-32 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985505)
OSG Spiral Flute Tap: 5/16"-18 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2930601). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2930601). Key specifications — attr1299826: H2 / 2B-3B.