Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (5/16"-24 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer (MPN 1704008).

SKU 3G-OTH-218017

Brand
OSG
Item
Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 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
1704008
Type
H4 / 2B-3B, Modified Bottoming Chamfer
Flute
3
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

Product Description

The OSG Spiral Flute Tap (5/16"-24 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer (MPN 1704008).

Frequently Asked Questions

What is the OSG spiral flute tap 1704008 used for?

The OSG 1704008 spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging, while the modified bottoming chamfer allows threading close to the hole bottom. It is commonly used in automotive, aerospace, and general machining applications.

What are the specifications of the OSG 5/16-24 UNF spiral flute tap?

This OSG tap has a 5/16-24 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is designed for threading blind holes in steel and stainless steel. The manufacturer part number is 1704008.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 1704008 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial sourcing partner, we provide genuine OSG cutting tools for steel and stainless steel threading applications.

How to select the correct OSG tap for stainless steel?

For stainless steel, choose a spiral flute tap with a modified bottoming chamfer, like the OSG 1704008, to manage chip evacuation in blind holes. Ensure the tap has H4 / 2B-3B tolerance for precise thread fit. Always match the tap to the material hardness and hole depth for optimal tool life.

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: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704408). Key specifications — attr1299826: H4 / 2B-3B.
OSG
OSG Spiral Flute Tap: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704408). Key specifications — attr1299826: H4 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704208). Key specifications — attr1299826: H6 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704208). Key specifications — attr1299826: H6 / 2B-3B.
OSG Spiral Flute Tap: 3/8"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704608). Key specifications — attr1299826: H6 / 2B-3B.
OSG
OSG Spiral Flute Tap: 3/8"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704608). Key specifications — attr1299826: H6 / 2B-3B.
OSG Spiral Flute Tap: 1/4"-28 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1703808). Key specifications — attr1299826: H6 / 2B-3B.
OSG
OSG Spiral Flute Tap: 1/4"-28 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1703808). Key specifications — attr1299826: H6 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704001). Key specifications — attr1299826: H4 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704001). Key specifications — attr1299826: H4 / 2B-3B.
OSG Spiral Flute Tap: 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1733905). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 1733905). Key specifications — attr1299826: H3 / 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.