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3G Electric
OSG Thread-Forming STI Tap, 5/16"-24 UNF, H4 / 2B-3B, V Coated Cobalt - Thread-Forming STI Taps
OSGThread-Forming STI Taps

OSG Thread-Forming STI Tap, 5/16"-24 UNF, H4 / 2B-3B, V Coated Cobalt

The OSG Screw Thread Insert STI Tap is a thread-forming tap in size 5/16"-24 UNF, with an H4 / 2B-3B tolerance and V Coated Cobalt construction (MPN 1626002508). Designed for forming internal threads in prepared…

SKU 3G-OTH-403953

Brand
OSG
Item
Thread-Forming STI Tap, 5/16"-24 UNF, H4 / 2B-3B, V Coated Cobalt
Part Number
1626002508
Category
Thread-Forming STI Taps
Available to Order
Also known as:1626002508OSG
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Local office
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Phone
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Technical Specifications

OSG
Manufacturer Part Number
1626002508
Type
H4 / 2B-3B, V Coated Cobalt
UNF
5/16"-24

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Screw Thread Insert STI Tap is a thread-forming tap in size 5/16"-24 UNF, with an H4 / 2B-3B tolerance and V Coated Cobalt construction (MPN 1626002508). Designed for forming internal threads in prepared holes for screw thread inserts, this tap is supplied by 3G Electric across 14 industrial departments, with specialist depth in cutting tools and precision threading solutions.

Frequently Asked Questions

What is an OSG Screw Thread Insert STI Tap used for?

An OSG Screw Thread Insert STI Tap is used to form internal threads in metal or plastic that accept helical wire thread inserts. It is ideal for repairing or reinforcing threads in automotive, aerospace, and industrial maintenance applications where joint strength and wear resistance are critical.

What are the specifications of the OSG 1626002508 STI Tap?

The OSG 1626002508 is a thread-forming STI tap with 5/16"-24 UNF thread size, H4 / 2B-3B tolerance class, and V coated cobalt construction. It is designed for forming threads that accept screw thread inserts, providing improved thread strength and surface finish in harder materials.

Where to buy OSG STI taps in worldwide?

3G Electric supplies and delivers OSG STI taps worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the OSG 1626002508 or other thread-forming taps.

How to select the correct OSG STI tap size?

To select the correct OSG STI tap, match the tap thread size and pitch to the insert you plan to install. For the 1626002508, use a 5/16"-24 UNF insert. Verify the material hardness and choose the appropriate coating — V coated cobalt suits harder alloys. Always consult the insert manufacturer's recommended tap drill size.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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OSG Products

3G Electric supplies OSG thread-forming 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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Thread-forming tap for creating internal threads in pre-drilled holes to accept helical wire thread inserts. Features a #4-48 UNF thread size, H2 / 2B-3B tolerance class, and modified bottoming chamfer. Used in general industrial machining for thread repair or reinforcement in metals
OSG
Thread-forming tap for creating internal threads in pre-drilled holes to accept helical wire thread inserts. Features a #4-48 UNF thread size, H2 / 2B-3B tolerance class, and modified bottoming chamfer. Used in general industrial machining for thread repair or reinforcement in metals

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