BaerCoil Spark Plug Thread Repair Kit M 12 x 1.25 - 120mm
BaerCoil Spark Plug Thread Repair Kit M 12 x 1.25 - 120mm
With this BaerCoil® thread repair-set it is possible to repair spark plug threads or glow plug threads in MF 12 x 1,25.
BaerCoil® thread inserts are the best solution for all your thread repair needs! With them you are able to make durable and strong connections. With the inserts you avoid scrap in your components and can recycle them. The inserts are precise and wear resistant - your screw will stay firmly in place without the thread insert slipping out.
The BaerCoil® thread insert is the perfect solution for damaged threads without changing the nominal diameter. For the thread repair with wire thread inserts, the thread is drilled out and a new STI thread (screw thread insert) is cut for the wire thread insert. This thread is often also called STI thread (STI=Screw Thread Insert). Then the BaerCoil® thread insert is screwed into the old thread and thus the workpieces are screwed back together. With BaerCoil® thread inserts, the thread produced is significantly more stable than the original thread.
Our thread inserts ensure that both static and dynamic work loads are distributed evenly over the individual thread turns. In addition, the flexibility of the thread inserts compensates for possible pitch and angular errors, so that optimum force transmission from the bolt to the nut thread is achieved. Especially in lightweight constructions, BaerCoil® thread inserts help to save carrier material and to use smaller or shorter screw connections. They are already an important component in aviation and vehicle construction. They significantly save material and contribute to the conservation of resources.
For repair directly on the thread, this thread repair set contains various auxiliary tools, such as the extra-long combination tap with guide thread (120 mm total length), insertion tool and wire thread inserts made of stainless steel.
This set does not include twist drill bit and tang breaker. No reaming is necessary for spark plug threads, because the combined drilling and cutting tool is used here. The hole is widened by the guide thread and then the thread is cut with oversize. For spark plug threads, the tang must be removed with needle-nose pliers.
BaerCoil® thread inserts can be shortened if necessary, according to the required length, with a side cutter or similar.
Dimensions
| Diameter |
12 |
|---|---|
| Pitch |
1,25 |
| Dimension |
MF 12 x 1,25 |
| Length |
1,0 D | 1,5 D | 2,0 D |
| T (Length when installed) |
1,0 D: 12 mm | 1,5 D: 18 mm | 2,0 D: 24 mm |
| Thread length calculation |
1.5 D means 1.5 times the diameter: 1.5 times 12 mm=18 mm
The nominal diameter for MF 12 is 12 mm |
Characteristics
| Product group |
Wire thread inserts - Repair kits |
|---|---|
| Product type |
BaerCoil thread repair kits |
| Thread standard |
MF: Metric ISO fine thread according to DIN 13 |
| Tolerance |
ISO2/6H |
| Direction |
Right |
| Type |
free running |
| Tensile strength at room temperature |
>1400 N/mm² |
| Material |
Stainless Steel V2A (AISI 304, X5CrNi18-10, Material No.: 1.4301) |
| Temperature resistance |
315°C long-term 425°C short-term |
Applications
Thread repair and thread reinforcement of spark plug threads that are difficult to reach for screw tap. This repair kit includes an extra-long screw tap to thread repair.
Technical drawing
| Diameter |
12 |
|---|---|
| Length |
1,0 D | 1,5 D | 2,0 D |
| T (Length when installed) |
1,0 D: 12 mm | 1,5 D: 18 mm | 2,0 D: 24 mm |
| F (Min. - Max. outside diameter of thread insert) |
13,47 mm - 15,00 mm |
| P (depth) |
The thread insert must sit 1/4 - 1/2 turns below the surface |
Content
- 1 x B3634-120: BaerCoil HSSG combination tap for spark plugs M 12 x 1.25 EG - length: 120 mm
- 1 x EBW12: BaerCoil Installation tool M 12 x 1.25
- 5 x B7223-1: BaerCoil thread inserts M 12 x 1,25 - length: 1,0 D - type: "free running" - material: A2 (1.4301) - tolerance ISO 2 (6H)
- 5 x B7223-15: BaerCoil thread inserts M 12 x 1.25 - length: 1.5 D - type: "free flowing" - material: A2 (1.4301) - tolerance ISO 2 (6H)
- 5 x B7223-2: BaerCoil thread inserts M 12 x 1.25 - length: 2.0 D - type: "free flowing" - material: A2 (1.4301) - tolerance ISO 2 (6H)
Video instructions
Zubehör
