Stock code 362
60x Clear Acrylic Slotted Knurled Thumbscrews M4 x 20 mm, Nuts & Washers
A closer look.
In stock
Check the fit. Technical specification
- Product type
- Thumbscrews
- Size (mm)
- M4 x 20mm
- Thread
- M4
- Material
- Acrylic / Polycarbonate
- Colour
- Clear
- Pack size
- 60
- Diameter
- 4.00 mm
- Length
- 20 mm
- Width
- 4 mm
- Thickness / depth
- 4 mm
- Pitch
- 0.7 mm
Inch values are converted from millimetres. Fractions are approximate, rounded to the nearest 1/16 in. Thread diameter and pitch are not shown as fractions.
Dimensions & documents
- Conformity SafetyPDF document
- Polycarbonate (PC) — Material DatasheetPDF document
- Polycarbonate (PC) — Screws & Bolts DatasheetPDF document
- Technical drawingDrawing, image
Bolt, nut and washer dimensions
Bolt
Head/Drive Type: Slotted Knurled Thumbscrew, size: M4 x 20, D: 4 mm, Pitch: 0.7 mm, L: 20 mm, HD: 9.77 mm, HH: 7.11 mm
Nut
Material: Polycarbonate, Head/Drive Type: Hexagon Nut, size: M4, N (mm): M4, HN B: 6.89 mm, HN H: 3.05 mm
Washer
Material: Polycarbonate, Head/Drive Type: Flat washer, size: M4, W0 A: 8.82 mm, W0 B: 4.39 mm, W0 T: 0.8 mm
Description
Features
- 60x thumbscrews, 60x nuts, 60x washers. Colour: Clear. Material: Acrylic / PC. Type: Slotted knurled. Thread: M4. Length: 20mm. Diameter: 4mm. Pitch: 0.7mm. SKU: 362.
- The ridges on knurled screws provide extra grip for hand-tightening and adjustment.
- Acrylic and polycarbonate are similar thermoplastics often used interchangeably; acrylic provides good strength and UV resistance, while polycarbonate offers higher impact and heat resistance.
- The clear material is lightweight and offers greater impact resistance than glass, making it useful where transparency is required.
- Straightforward manual adjustment, fastening or removal without tools. Operate the thumbscrews with thumb and forefinger, or use the slotted recess with a screwdriver. Also known as knurled screws, finger screws.
Product Summary
This pack contains 60 clear acrylic / PC slotted knurled thumbscrews, M4 x 20 mm, with matching nuts and washers. The knurled head provides extra grip for hand-tightening, while the slotted recess allows screwdriver adjustment. Acrylic and polycarbonate are similar thermoplastics often used interchangeably; acrylic provides good strength and UV resistance, while polycarbonate offers higher impact and heat resistance. These clear fasteners are lightweight and moisture-resistant, with greater impact resistance than glass. Thumbscrews are also known as knurled screws or hand-tightening screws.
Feedback from our customers
Every rating 4 or 5 starsAcross 1,797 reviews
Perfect quality nylon bolts that fixed an unfixable situation! Speedy delivery!
very quick delivery and excellent product, better than expected !!
these are very good quality and I have placed many repeat orders.
Well packed and prompt order processing, product is as advertised
The residents at the Veterans Home loved taking these apart and putting them back together. I bought more for them.
Very happy with the quality of the item and the speedy delivery
Smooth fitting and easy to cut for shorter lengths if required.
good quality, item as described , arrived imperfect condition.
Quick delivery, but had to use super glue to stick as the adhesive was not strong enough, but otherwise, great product.
Better than expected. Very well packaged (inside and out)
Great product! Adhesiveness is super strong and durable.
Arrived sooner than promised and was well packaged.
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