BaerCoil Wire Thread Inserts UNC No. 4 x 40 - 2.5 D (7.11 mm) - free running - 100 pcs.
BaerCoil Wire Thread Inserts UNC No. 4 x 40 - 2.5 D (7.11 mm) - free running - 100 pcs.
BaerCoil® wire thread inserts not only ensure a long-lasting and powerful threaded connection in the thread repair, but also enable scrap recovery. The inserts also create load-bearing connections in materials with low shear strength. Thanks to their precision and wear resistance, the BaerCoil® thread inserts hold your screw firmly in place without changing the thread insert. Ideal for repairing stripped or worn threads. wire thread inserts are often used in automotive, electrical, medical, lightweight construction, and aerospace applications.
The BaerCoil® thread insert is the perfect solution for damaged threads - with the same nominal diameter! For thread repair with wire thread inserts, the thread is drilled out and a new STI thread (screw thread insert) for the wire thread insert is cut. This thread is often also called STI thread (STI=Screw Thread Insert).
BaerCoil® thread inserts are sophisticated design elements that ensure optimum power transmission from the bolt to the nut thread. They compensate for pitch and angular errors and thus distribute static and dynamic work loads evenly over all thread turns. This is particularly important in lightweight constructions where the carrier material is to be reduced. BaerCoil® thread inserts make it possible to use smaller and shorter screw connections. Today, they are already an important component in the aerospace and automotive industries.
BaerCoil® thread inserts can be shortened, according to the required length, with a side cutter or similar.
Dimensions
| Diameter |
No. 4 |
|---|---|
| Pitch |
40 |
| Dimension |
UNC No. 4 x 40 |
| Length |
2,5 D |
| T (Length when installed) |
7,11 mm |
| Thread length calculation |
2.5 D means 2.5 times the diameter: 2.5 times 2.84 mm=7.11 mm The nominal diameter at UNC No. 4 is approx. 2.84 mm |
Characteristics
| Product group |
Wire thread inserts |
|---|---|
| Product type |
BaerCoil wire thread inserts |
| Thread standard |
UNC: American Unified National Coarse thread according to ANSI B1.1 |
| 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
All normal uses for thread repair and thread reinforcement
Technical drawing
| Diameter |
No. 4 |
|---|---|
| Length |
2,5 D |
| T (Length when installed) |
7,11 mm |
| F (Min. - Max. outside diameter of thread insert) |
0,142 '' - 0,159 '' |
| P (depth) |
The thread insert must sit 1/4 - 1/2 turns below the surface |
| B (thread depth with chamfer) |
0,367 '' |
| D (minimum depth of the core hole, without tip) |
0,392 '' |
Video instructions
Further information
Product data sheet
Zubehör
