Joiner screws are used for furniture, for example whether the kitchen cabinets, shelving for nonviolent, bedroom units, office units, desks, wood panels. - M4 x 30-40 MM. - M6 x 30-40 MM. You need to drill hole Ø 5 mm in 2 panels/boards, then assembly longer part of joiner screw (female) and screw shorter part (male) into it to connect 2 panels/units/cabinets.
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Eary 4Pcs Width Adjustable Chair Leg Uprights Screw Clamp Furniture Leg Booster Heavy Duty Sofa Table Bed Furniture Highten Pads
Aliexpress UK
Hexagon Drive Design: These socket head screws are designed with a hexagon drive socket head, which has uniform force and is not easy to slip, providing a firm and tight fit. Matching with barrel nuts can prevent loosening and provide a solid connection for your furniture.
eBay
Adjustable Stainless Steel Furniture Legs Thickened Metal Replacement Legs with Screws for Cabinet Desk Table Chair Sofa Bed
Aliexpress UK
Item Type: Baby Bed Crib Screw. 10Pcs M6 x 70mm Baby Bed Crib Screw. Good Material: Adopting galvanized stainless steel material with high strength, very durable for long use. Product Process: Surface Galvanized.
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4PCS Foldable Bracket, Self-Lock Hinge Hardware with Screws Lock Extension Support for Table Leg, Bed Leg, Workbench, Pack of 4
Aliexpress UK
Material: Carbon Steel. Standard: GB/T.
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Uxcell 4/5/10pcs Hex Socket Head Screw Bolt Barrel Nuts M6x80/90/100/110/120mm Furniture Chairs Cots Baby Bed Bolt with Wrench
Aliexpress UK
✔Powerful Function－The headboard bolts are strong and can keep the headboard safe and upright continuously, so you can sit up and read and watch TV more comfortably.
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8pcs/lot Screws Furniture Glides PTFE Heavy Duty Furniture Slip Mat Glide Mat For Sofa Bed Table Couch Dining Chairs
Aliexpress UK
Headboard Bolts - Premium Quality & Easy Installation (M8 BOLTS 90MM). 2, 4, 6, 8, 10 headboard bolts (M8 X 90mm). These headboard bolts are designed to provide maximum stability and security. They can hold the headboard in place, preventing it from moving, even during heavy usage.
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Flat Head Hex Socket Furniture Screw Connector Bolts Stainless Steel M3 M4 M5 M6 M8 M10 Funiture Bolts for Barrel Nut Crib Bed
Aliexpress UK
Quantity ：50pcs. 5Pcs x M6 x 40mm screws. 5Pcs x M6 x 50mm screws. 【Friendly Design】：The flat head screw nut slot is deep and the surface is smooth and burr-free. The uniform strength of the screw nut and screws ensure that they do not slip or tear off during use.
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1PC Felt Bedside Storage Organizer Anti-slip Bedside Bag Bed Sofa Side Pouch Hanging Couch Storage Bed Holder Pockets for Sofa
Aliexpress UK
10set/20pcs Universal Under Engine Cover Undertray ClipM6 Bolts & U-nut. Item Type: M6 Bolt + U-nut.
eBay
Modern Simple Leather Bed Light Luxury Double Bed Master Bedroom New Wedding Bed 1.5M / 1.8M High-Grade Leather Bed
Aliexpress UK