Pololu - Aluminum Standoff: 1-1/4 Length, 4-40 Thread, M-F (4-Pack)

These hexagonal male-female aluminum standoffs keep parts spaced 1.25" (32 mm) apart and are great for building a multi-level robot chassis. Both ends of these 3/16"-wide standoffs have 4-40 threads. The standoffs are sold in packs of 4.
These hexagonal male-female aluminum standoffs keep parts spaced 1.25 (32 mm) apart and are great for building a multi-level robot chassis. Both ends of these 3/16-wide standoffs have 4-40 threads. The standoffs are sold in packs of 4.

F13: Line Following Robot - Embedded Systems Learning Academy

These hexagonal male-female aluminum standoffs keep parts spaced 1.25 (32 mm) apart and are great for building a multi-level robot chassis. Both ends

Aluminum Standoff 1.25 x 0.25 4-40 M-F 4-Pack

Pololu RP5/Rover 5 Expansion Plate RRC07B (Wide) Solid Black

Pololu - Aluminum Standoff 1.25 x 0.25 4-40 M-F 4-Pack

Pololu RP5/Rover 5 Expansion Plate RRC07A (Narrow) Transparent

Aluminum Standoff: 1/4 Length, 4-40 Thread, M-F (4-Pack)

Small Parts 142408RFA Aluminum Female Threaded Round Standoff, 1/4

Pololu 1943 - Aluminum Standoff: 3/4 Length, 2-56 Thread, M-F (4

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Pololu 1977 - Nylon Spacer: 20mm Length, 4mm OD, 2.7mm ID (10-Pack

Aluminum Standoff: 1-1/4 Length, 4-40 Thread, M-F (4-Pack

These 1/2-long hexagonal female-female aluminum standoffs keep parts spaced 0.5 inches (13 mm) apart. They are like elongated, 3/16″-wide hex nuts,

Pololu - Aluminum Standoff: 1/2 Length, 4-40 Thread, F-F (4-Pack)

2104-440-AL-MF HEX STANDOFF 1/4 HEX X 1/2 L X 4-40 ID ALUMINUM

Spacer sleeve 5mm / 3.2mm, length 30mm, white polyamide - Kamami

These hexagonal male-female aluminum standoffs keep parts spaced 0.5 (13 mm) apart and are great for building a multi-level robot chassis. Both ends

Pololu - Aluminum Standoff: 1/2 Length, 4-40 Thread, M-F (4-Pack)