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These Knurled Captive Thumb Screws are a variant of the DIN 663 Knurled Captive Thumb Screws.
They feature a large cylindrical head which hosts a knurled edge and are designed to be adjusted easily by hand.
They feature an unthreaded shank, which is often referred to as a reduced thread, which allows for the use of a captive washer and stops the screw from being fully removed from its housing.
Available as standard in A1 stainless steel, with optional thread locking patches available.
Specials in a range of materials, finishes and sizes are available upon request.
Please contact us to further your enquiry.
d1 and L1 dimensions can be to customer specification.
| Knurled Reduced Thread Captive Thumb Screws (DIN 663) | ||||||||||||
| THREAD | M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | M10 | |||
| DK (mm) | 9.29 – 8.71 | 11.35 – 10.65 | 12.35 – 11.65 | 14.35 – 13.65 | 16.35 – 15.65 | 20.42 – 19.58 | 24.42 – 23.58 | 30.42 – 29.58 | 36.5 – 35.6 | |||
| d1 (mm) | 1.4 | 1.8 | 2.2 | 2.6 | 3 | 3.8 | 4.5 | 6.2 | 8 | |||
| L (mm) | 8 | 10 | 12 | 14 | 16 | 20 | 25 | 32 | 40 | |||
| L1 (mm) | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 16 | 20 | |||
| H (mm) | 2 – 1.75 | 2.5 – 2.25 | 2.5 – 2.25 | 3 – 2.75 | 3.5 – 3.2 | 4 – 3.7 | 5 – 4.7 | 6 – 5.7 | 8 – 7.64 | |||
| AVAILABLE SIZES | M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | M10 | |||
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