Thread Repair Kits, BSF 3/4 - 1,5D

Applications:

• Repair of stripped or damaged BSF 3/4 × 12 threads
• Reinforcement of soft materials such as aluminium, copper or plastic
• Restoration of rejected or worn-out components
• Creation of high-strength, wear-resistant internal threads
• Perfect for workshop use, installations, and machine maintenance
• Wire inserts DIN 8140, tolerance ISO 2 (6H), type S – free running, stainless steel

Advantages:

• Durable repair with higher thread load capacity
• Resistant to corrosion, heat and mechanical stress
• Simple hand operation – no special tools needed
• Robust, organized plastic case for easy handling
• Excellent quality and precision from V-COIL
• Ideal for mechanical workshops, maintenance and assembly work

1. Drilling: Prepare the damaged thread hole using the appropriate STI twist drill.
2. Tapping: Cut the new STI thread with the HSS-G tap using cutting oil.
3. Inserting: Screw in the stainless-steel insert with the inserting tool until flush.
4. Breaking the tang: Remove the tang using the tang break tool.
5. Inspection: Check the repaired thread with a matching BSF screw.

• Brand: V-COIL
• Nominal size: BSF 3/4" × 12
• Repair length: 1.5D
• Material: Stainless steel
• Packaging: Plastic case
• EAN: 4022835041726
• Article No.: 04172

• 1× STI short machine tap, form D, HSS-G, BSF 3/4 × 12 (03262)
• 1× Inserting tool with locking ring, No. 20 (08020)
• 5× Wire thread inserts – type S – free running – BSF 3/4 × 12 – 1.5 D (08372)

Is this kit suitable for aluminium?
Yes, the stainless inserts work perfectly with aluminium or other soft materials.

What does 1.5D mean?
The insert length is 1.5 times the nominal thread diameter for increased load strength.

Is the drill included?
The corresponding drill for this BSF size is available separately.

Can I use this kit manually?
Yes, all tools are designed for easy hand use without additional machines.

How durable is the repair?
If installed correctly, the repaired thread is stronger and longer-lasting than the original.

Are other BSF sizes available?
Yes, V-COIL offers complete BSF, BSW, UNC and UNF thread repair kits.

Need assistance or spare inserts?
Contact us via the contact form.