BaerCoil Wire Thread Inserts BSF 7/16 x 18 - 2.5 D (27.78 mm) - screw grip (screw locking) - 100 pcs.
BaerCoil Wire Thread Inserts BSF 7/16 x 18 - 2.5 D (27.78 mm) - screw grip (screw locking) - 100 pcs.
BaerCoil® thread inserts are the best solution for all your repair needs! With them you can create long-lasting and powerful connections. These inserts also ensure that you have no waste and recycle everything. The inserts are precise and wear resistant - your screw will stay firmly in place without the thread insert slipping.
The BaerCoil® thread insert is the perfect solution for damaged threads while maintaining the same nominal diameter. For 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 called STI thread (STI=Screw Thread Insert). Then the BaerCoil® thread insert is screwed into the old thread and thus the workpieces are screwed on again. With BaerCoil® thread inserts, the thread produced is significantly more stable than the original thread.
BaerCoil® thread inserts ensure optimum force transmission from the bolt to the nut thread. The flexibility of the thread inserts compensates for any pitch and angular errors so that the loads are distributed evenly over the individual thread turns. BaerCoil® thread inserts are ideal for lightweight constructions, as they reduce the carrier material and enable smaller or shorter screw connections. Today, they are already an important component in aviation and vehicle construction.
BaerCoil® screw-locking thread inserts | Type "screw grip " - All advantages at a glance
With the self-clamping "screw grip" thread inserts, your construction remains stable - regardless of shocks, constant vibrations or movements. The screw-locking BaerCoil® thread inserts complement the properties of the "free running" connection and have a clamping effect on the flanks of the screwed-in screw due to their polygonally shaped windings. Please use only screws of a higher strength class for this purpose, as an elastically resilient frictional connection is created. The clamping torques are comparable with the specifications in DIN 267 Part 15 and ISO 2320. Please note that special insertion tools with reduced diameters are required for screw grip inserts.
BaerCoil® thread inserts can be shortened if necessary, according to the required length, with a side cutter or similar. It should be noted that the thread inserts with screw locking have a polygonal winding approximately in the middle of the insert. This must not be removed when shortening in order to maintain the screw locking effect.
Dimensions
| Diameter |
7/16 |
|---|---|
| Pitch |
18 |
| Dimension |
BSF 7/16 x 18 |
| Length |
2,5 D |
| T (Length when installed) |
27,78 mm |
| Thread length calculation |
2.5 D means 2.5 times the diameter: 2.5 times 11.11 mm=27.78 mm The nominal diameter for BSF 7/16 is approx. 11.11 mm |
Characteristics
| Product group |
Wire thread inserts |
|---|---|
| Product type |
BaerCoil wire thread inserts |
| Thread standard |
BSF: British Whitworth fine thread according to BS 84 |
| Direction |
Right |
| Type |
screw grip (screw locking) |
| 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 |
7/16 |
|---|---|
| Length |
2,5 D |
| T (Length when installed) |
27,78 mm |
| F (Min. - Max. outside diameter of thread insert) |
0,504 '' - 0,555 '' |
| P (depth) |
The thread insert must sit 1/4 - 1/2 turns below the surface |
| B (thread depth with chamfer) |
1,287 '' |
| D (minimum depth of the core hole, without tip) |
1,343 '' |
