Zoro Select
Zoro Select Heat-Set Insert M4-0.70 5 mm Brass Pack of 1000
M4 heat-set brass inserts, 5 mm long, tapered shank for thermoplastic, pack of 1000
- TypeThreaded Inserts
- M4 x 0.70 metric thread fits standard hardware
- 5 mm overall length suits thin thermoplastic walls
- Single-vane tapered shank increases pull-out resistance
- Brass construction resists corrosion in finished assemblies
- Pack of 1000 supports high-volume production runs
M4-0.70 brass heat-set inserts
These Zoro Select inserts provide M4-0.70 metric threads in thermoplastic parts. They install with heat or ultrasonic energy for a permanent bond. The pack contains one thousand pieces for volume production runs. Right-hand threads accept standard M4 fasteners.
Heat installation limits for thermoplastics
A tapered shank and single vane resist pull-out and rotation once cooled. The minimum material thickness is 3 3/8 mm and the maximum hole diameter is 5.9436 mm. Drill the pilot hole with a 0.226 in bit for proper interference. Exceeding these dimensions reduces retention strength.
Brass construction with flush flange
The plain-finish brass body measures 6.4 mm in diameter and 5 mm overall length. A 5.7404 mm tapered end guides insertion into the pilot hole. The flush flange sits level with the surface without a protruding lip. Brass offers corrosion resistance and thermal conductivity for reliable heating cycles.
Highlights
- M4 x 0.70 metric thread fits standard hardware
- 5 mm overall length suits thin thermoplastic walls
- Single-vane tapered shank increases pull-out resistance
- Brass construction resists corrosion in finished assemblies
- Pack of 1000 supports high-volume production runs
Specifications
| Brand | ZORO SELECT |
|---|---|
| Type | Threaded Inserts |
Questions about this item
Should I choose the M4-0.70 size or another thread pitch for my thermoplastic parts?
The M4-0.70 thread pitch matches standard metric M4 hardware. Select this size when your design calls for M4 screws and the 5 mm insert length fits your wall thickness.
What does the 5 mm overall length mean once the insert is installed in plastic?
The 5 mm length sits flush with the surface after heat setting. It provides full thread engagement in walls at least 3 3/8 mm thick while keeping the flange level with the part face.
How does the 6.4 mm insert diameter and 0.226 in drill size relate to the hole I need to mould or drill?
Drill or mould a 0.226 in hole; the 6.4 mm insert diameter with its 5.7404 mm tapered end and single vane creates pull-out resistance as the plastic flows into the vane during installation.
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