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, 2 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

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

SKU 3G-OTH-218925

Brand
OSG
Item
Spiral Flute Tap: #4-40 UNC, H4 / 2B-3B, 2 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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
1748101
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?

The OSG spiral flute tap #4-40 UNC is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging and enabling clean threads in deep or blind applications. The modified bottoming chamfer allows threading close to the hole bottom.

What are the specifications of the OSG tap 1748101?

The OSG tap 1748101 is a #4-40 UNC spiral flute tap with an H4 / 2B-3B tolerance class. It has 2 flutes and a modified bottoming chamfer. This tap is intended for threading steel and stainless steel. The H4 tolerance ensures precise thread fit for 2B-3B class threads.

Where to buy OSG taps in worldwide?

You can source OSG 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 spiral flute tap 1748101 or other OSG tooling.

How to select the correct OSG tap for stainless steel?

For stainless steel, select a spiral flute tap like the OSG #4-40 UNC with an H4 tolerance for precise thread fit. Ensure the tap has a modified bottoming chamfer for blind holes. Use appropriate cutting fluid and follow manufacturer speed/feed recommendations to avoid work hardening and tool breakage.

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 taps for steel & stainless steel. 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, 2 Flute, Modified Bottoming Chamfer (MPN 1748001). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1748001). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1763905). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1763905). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1763901). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1763901). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1763908). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1763908). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 0135708). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 0135708). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 0135608). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 0135608). Key specifications — attr1299826: H2 / 2B-3B.

More from OSG

View all OSG parts →
OSG Spiral Flute Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1753201). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1753201). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1705001)
OSG
OSG Spiral Flute Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1705001)
OSG Spiral Flute Tap: 7/16"-14 UNC, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650512208)
OSG
OSG Spiral Flute Tap: 7/16"-14 UNC, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650512208)
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1722601)
OSG
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1722601)
OSG Spiral Flute Tap: #4-48 UNF, H2 / 2B-3B, 2 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650509008). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-48 UNF, H2 / 2B-3B, 2 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650509008). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1732905). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1732905). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: M22x1 Metric, D5 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1650006808). Key specifications — attr1299826: D5 / 4H-6H.
OSG
OSG Spiral Flute Tap: M22x1 Metric, D5 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1650006808). Key specifications — attr1299826: D5 / 4H-6H.
OSG Spiral Flute Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1705608). Key specifications — attr1299826: D4 / 4H-6H.
OSG
OSG Spiral Flute Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1705608). Key specifications — attr1299826: D4 / 4H-6H.