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OSG Screw Thread Insert STI Tap: Spiral Point, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG Screw Thread Insert STI Tap: Spiral Point, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute

The OSG Screw Thread Insert STI Tap is a spiral-point tap for 7/16"-20 UNF threads, featuring an H4 / 2B-3B tolerance with a plug chamfer and 3 flutes (MPN 12500400). Designed for threading holes to accept screw…

SKU 3G-OTH-286989

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Point, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute
Category
Spiral-Point STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
12500400
Type
H4 / 2B-3B, Plug Chamfer
Flute
3
UNF
7/16"-20
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-point tap for 7/16"-20 UNF threads, featuring an H4 / 2B-3B tolerance with a plug chamfer and 3 flutes (MPN 12500400). Designed for threading holes to accept screw thread inserts, this tap is supplied by 3G Electric across 14 industrial departments, with specialist depth in cutting tools and precision threading solutions.

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-point sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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