Trapezoidal Nuts.
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T8*8mm Stainless Steel Trapezoidal Thread Lead Screw Rod L450mm +Copper Nut Threaded Rod T8 Lead Screw 3D Printer Accessories
Aliexpress UK
The installation of trapezoidal lead screw is simple, the structure is nocomplex and the maintenance is convenient.
eBay
1pcs Brass Threaded Rod M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M14 M16 x 250mm 500mm, Threaded Stud Bar, High Strength Bolt Threaded Rod
Aliexpress UK
● Size：T12~T40/TrL12~TrL40. 45 Steel Has Good Toughness, Can Maintain Stable Performance Under Alternating Load and Impact Load, Excellent Fatigue Resistance. 2.45 Steel Has Good Machinability, Easy to Turn, Milling, Drilling and Other Machining Operations, Can Produce High Precision Nuts.
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T12 Lead Screw stainless steel trapezoidal screw brass Nut Pitch 2mm Lead 2mm/8mm/10mm/12mm 3D Printer Trapezoidal Rod 100-600mm
Aliexpress UK
Lead Screw Model: T10×2, T12×3, T14×3, T16×4, T20×4,T22×5，T25x5, T28x5, T30x6, T32x6, T36×6, T40×8. Nut Model: T10×2, T12×3, T14×3, T16×4, T20×4,T22×5，T25x5, T28x5, T30x6, T32x6, T36×6, T40×8. The Size of the Nut Is Large, the Material Is Sufficient, It Can Be Welded, and It Is Sturdy and Durable.
eBay
1Piece/Lot M6-M20 Full Threaded Fine Thread Rods Screws Rod Fully Metric Thread Rods Shaft Bar 304 Stainless Steel L=250mm
Aliexpress UK
Length: 1000mm. -The installation of trapezoidal lead screw is simple, the structure is nocomplex and the maintenance is convenient. -Material: 45# Steel. ● Good quality.
eBay
Brass Threaded Rod M2 M2.5 M3 M4 M5 M6 M8 M10 Length 250mm/500mm Coppers Thread Bar Screw Brass Threaded Tooth Strip
Aliexpress UK
Length: 1000mm. -The installation of trapezoidal lead screw is simple, the structure is nocomplex and the maintenance is convenient. -Material: 45# Steel.
eBay
Threaded Mandrel Riveter Machine Accessory Threaded Mandrel Rivet Nut Tool Adapter Pull Rod Riveter Replacement Riveting Heads
Aliexpress UK
● Lead Screw Model: T10×2, T12×3, T14×3, T16×4, T20×4,T22×5，T25x5, T28x5, T30x6, T32x6, T36×6, T40×8. 304 Stainless T10-T40 Right-hand Threaded Rod Trapezoidal Lead Screw, Brass Nut. ● Nut Model: T10×2, T12×3, T14×3, T16×4, T20×4,T22×5，T25x5, T28x5, T30x6, T32x6, T36×6, T40×8.
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1-20pcs Threaded Rod 304 Stainless Steel Screw Diameter 30-300mm Fully Metric Headless Bolt Thread Stud Rods Screws M3 M4 M5-M20
Aliexpress UK
T10-T36 Trapezoidal Right-Hand Threaded Rod Lead Screw A2 Stainless Steel L:0.5M Description: -Lead Screw Material: A2 Stainless steel。 - Easy to install。 - Durable with high precision。 - Can withstand great weight。 - Suitable for 3D printer Z Axis and stepper motor。 -Lead Screw Length:500mm。 -T10×2：Threaded diameter 10mm,Threaded pitch 2mm。 -Clear threads, even pitch, no roughness, good quality。 -Features: high speed, low noise, low friction。 -Usage: Used in sliding parts of various machines。 -Note: This link only sells screws, if you need nuts, please contact customer service!
eBay
1pcs M2 -M12 M14 M16 M18 M20 304 Stainlesss Steel Full Threaded Rod Bolt Length250mm-500mm Metric Headless Thread Stud Rods
Aliexpress UK