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CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173051) - General Purpose Spiral-Point Taps
CHICAGO-LATROBEGeneral Purpose Spiral-Point Taps

CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173051)

The CHICAGO-LATROBE Spiral Point Tap (MPN 173051) is a general purpose spiral-point tap with a 1/4"-20 UNC thread size. It features an H3 / 2B tolerance, 3 flutes, and a bottoming chamfer, designed for through-hole…

SKU 3G-OTH-216284

Brand
CHICAGO-LATROBE
Item
Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer
Category
General Purpose Spiral-Point Taps
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
173051
Type
H3 / 2B, Bottoming Chamfer
Flute
3

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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CHICAGO-LATROBE Spiral Point Tap (MPN 173051) is a general purpose spiral-point tap with a 1/4"-20 UNC thread size. It features an H3 / 2B tolerance, 3 flutes, and a bottoming chamfer, designed for through-hole threading applications.

Frequently Asked Questions

What is a Chicago-Latrobe spiral point tap used for?

A Chicago-Latrobe spiral point tap is used for threading blind or through holes in metal, directing chips forward to prevent clogging. It is ideal for production tapping in steel, aluminum, and cast iron across machining, automotive, and general manufacturing applications.

What are the specifications of the Chicago-Latrobe 173051 tap?

The Chicago-Latrobe 173051 is a 1/4"-20 UNC spiral point tap with H3 / 2B tolerance, 3 flutes, and a bottoming chamfer. It is designed for general purpose threading in blind holes, providing chip evacuation and thread accuracy in ferrous and non-ferrous materials.

Where to buy Chicago-Latrobe taps in worldwide?

3G Electric supplies Chicago-Latrobe taps worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner across 14 industrial departments, we provide genuine Chicago-Latrobe cutting tools and can quote for your specific thread size and material requirements.

How to select the right spiral point tap for threading?

Select a spiral point tap like the Chicago-Latrobe 173051 for through or blind holes where chips must push ahead. Match thread size (1/4"-20 UNC), chamfer type (bottoming for shallow holes), and tolerance class (H3) to your material and hole depth. Consult a cutting tool specialist for optimal performance.

Used in

Common applications for CHICAGO-LATROBE
Aerospace assembly — Chicago-Latrobe NAS 907 Type B aircraft-extension drill bits for drilling fastener holes in aluminum and titanium skins.
Metal fabrication — Chicago-Latrobe reduced-shank drill bit sets for enlarging holes in structural steel using magnetic drill presses.
Maintenance repair — Chicago-Latrobe left-hand cobalt jobber-length drill bits for removing broken bolts in machinery.
Tool and die making — Chicago-Latrobe jobber-length drill bit sets with 135° split point for precision hole drilling in hardened steels.
Automotive repair — Chicago-Latrobe spiral-flute screw extractors for removing seized fasteners in engine blocks or exhaust systems.
General manufacturing — Chicago-Latrobe HSS jobber-length drill bits for production drilling in mild steel and cast iron.

CHICAGO-LATROBE Products

3G Electric supplies CHICAGO-LATROBE general purpose spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
CHICAGO-LATROBE Spiral Point Tap: 7/16"-20 UNF, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173033)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 7/16"-20 UNF, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173033)
CHICAGO-LATROBE Spiral Point Tap: 5/16"-18 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173052)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 5/16"-18 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173052)
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 173029)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 1/4"-20 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 173029)
CHICAGO-LATROBE Spiral Point Tap: 3/8"-16 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173053)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 3/8"-16 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173053)
CHICAGO-LATROBE Spiral Point Tap: 7/16"-14 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173032)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 7/16"-14 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173032)
CHICAGO-LATROBE Spiral Point Tap: 1/2"-13 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173054)
CHICAGO-LATROBE
CHICAGO-LATROBE Spiral Point Tap: 1/2"-13 UNC, H3 / 2B, 3 Flute, Bottoming Chamfer (MPN 173054)

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