Swayboo M4 Stainless Steel Knife Handle Screws – 2 Sets
Build or restore your custom knife handles with confidence using these precision-machined M4 stainless steel knife handle screws from Swayboo. Designed specifically for DIY knife making, each set includes 2 unilateral screws and 1 connecting rod, giving you a secure, flush-fitting fastener system that locks handle scales firmly in place.
Made in Mainland China.
Why Choose These Knife Handle Screws?
-
Stainless steel construction — corrosion-resistant and built for long-term durability
-
M4 thread with countersunk head design for a clean, flush finish on both sides of the handle
-
Wide size range — available in 10 lengths for both 5mm and 6mm shank hole configurations, so you can match virtually any handle thickness
-
2 complete sets included — each set contains 2 unilateral screws + 1 connecting rod
-
5mm & 6mm shank options — compatible with a broad range of handle materials and blade tangs
- No high-concern chemicals — safe for workshop use
Package Contents
2 Sets of screws
Each set = 2 Unilateral Screws + 1 Connecting Rod
Size Specifications — 5mm Shank Hole
| Size |
Total Length |
Screw Length |
Screw Dia. |
Head Dia. |
Head Thickness |
Thread |
| 1 |
18.8mm |
14mm |
5mm |
16mm |
2.4mm |
M4 |
| 2 |
20.8mm |
16mm |
5mm |
16mm |
2.4mm |
M4 |
| 3 |
21.8mm |
17mm |
5mm |
16mm |
2.4mm |
M4 |
| 4 |
24.8mm |
20mm |
5mm |
16mm |
2.4mm |
M4 |
| 5 |
13.8mm |
9mm |
5mm |
16mm |
2.4mm |
M4 |
| 6 |
16.8mm |
12mm |
5mm |
16mm |
2.4mm |
M4 |
| 7 |
29.8mm |
25mm |
5mm |
16mm |
2.4mm |
M4 |
| 8 |
34.8mm |
30mm |
5mm |
16mm |
2.4mm |
M4 |
| 9 |
39.8mm |
35mm |
5mm |
16mm |
2.4mm |
M4 |
| 10 |
44.8mm |
35mm |
5mm |
16mm |
2.4mm |
M4 |
Size Specifications — 6mm Shank Hole
| Size |
Total Length |
Screw Length |
Screw Dia. |
Head Dia. |
Head Thickness |
Thread |
| 1 |
18.8mm |
14mm |
6mm |
16mm |
2.4mm |
M4 |
| 2 |
20.8mm |
16mm |
6mm |
16mm |
2.4mm |
M4 |
| 3 |
21.8mm |
17mm |
6mm |
16mm |
2.4mm |
M4 |
| 4 |
24.8mm |
20mm |
6mm |
16mm |
2.4mm |
M4 |
| 5 |
13.8mm |
9mm |
6mm |
16mm |
2.4mm |
M4 |
| 6 |
16.8mm |
12mm |
6mm |
16mm |
2.4mm |
M4 |
| 7 |
29.8mm |
25mm |
6mm |
16mm |
2.4mm |
M4 |
| 8 |
34.8mm |
30mm |
6mm |
16mm |
2.4mm |
M4 |
| 9 |
39.8mm |
35mm |
6mm |
16mm |
2.4mm |
M4 |
| 10 |
44.8mm |
40mm |
6mm |
16mm |
2.4mm |
M4 |
Perfect For
- Custom knife handle making & knifemaking hobbyists
- Handle scale replacement on hunting, chef, or bushcraft knives
- DIY woodworking and home workshop projects
- Blade smiths and craftspeople needing reliable fastener hardware
Looking for more workshop and DIY essentials? Check out our 2.3m Flexible Drain Cleaning Brush for tricky-to-reach maintenance tasks, or browse our Solid Wood Walnut Bean Shovel & Trays to see the quality craftsmanship we carry across our range.
Learn more: OSHA on personal protective equipment
Frequently Asked Questions
Q: How many screws are included in this listing?
A: You receive 2 complete sets. Each set contains 2 unilateral countersunk screws and 1 connecting rod, giving you a total of 4 screws and 2 connecting rods across both sets.
Q: What is the difference between the 5mm and 6mm options?
A: The shank diameter is the key difference — 5mm fits handle scales drilled with a 5mm hole, while 6mm fits scales drilled with a 6mm hole. Both options share the same M4 thread, 16mm countersunk head diameter, and the full range of 10 lengths, so you can choose based on your handle material thickness and pre-drilled hole size.
Q: Are these screws suitable for different handle materials such as wood, G10, or Micarta?
A: Yes. The stainless steel construction and countersunk head design make these screws compatible with a wide variety of handle materials including hardwood, G10 fiberglass, Micarta, bone, and synthetic composites. The flush-fitting head ensures a smooth, professional finish on any handle.
Q: Will these screws rust or corrode over time?
A: These fasteners are made from stainless steel, which offers excellent resistance to corrosion and oxidation, making them a durable long-term choice for knife handles that may be exposed to moisture or outdoor conditions.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.