BaerCoil Wire Thread Inserts UNF 1/4 x 28 - 2.0 D (12.7 mm) - screw grip (screw locking) - 100 pcs.
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BaerCoil Wire Thread Inserts UNF 1/4 x 28 - 2.0 D (12.7 mm) - screw grip (screw locking) - 100 pcs.
BaerCoil® wire thread inserts are the perfect solution for a durable, powerful threaded connection and With the BaerCoil® wire thread inserts you create perfect, durable and powerful threaded connections. At the same time, the use of wire thread inserts allows for scrap recovery and load-bearing connections in materials with low shear strength. This is why wire thread inserts is often used in automotive, electrical engineering, medical technology, lightweight construction and aerospace.
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® screw-locking thread inserts | Type "screw grip " - All advantages at a glance
With the self-clamping "screw grip" thread inserts, your construction remains stable - no matter whether it is subject to 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 |
1/4 |
|---|---|
| Pitch |
28 |
| Dimension |
UNF 1/4 x 28 |
| Length |
2,0 D |
| T (Length when installed) |
12,7 mm |
| Thread length calculation |
2.0 D means 2 times the diameter: 2 times 6.35 mm=12.7 mm The nominal diameter for UNF 1/4 is approx. 6.35 mm |
Characteristics
| Product group |
Wire thread inserts |
|---|---|
| Product type |
BaerCoil wire thread inserts |
| Thread standard |
UNF: American Fine Unified National thread according to ANSI B1.1 |
| 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 |
1/4 |
|---|---|
| Length |
2,0 D |
| T (Length when installed) |
12,7 mm |
| F (Min. - Max. outside diameter of thread insert) |
0,292 '' - 0,326 '' |
| P (depth) |
The thread insert must sit 1/4 - 1/2 turns below the surface |
| B (thread depth with chamfer) |
0,625 '' |
| D (minimum depth of the core hole, without tip) |
0,661 '' |
Video instructions
Further information
Product data sheet
Safety instructions
Zubehör
