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.

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

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

Pololu - Aluminum Standoff for Raspberry Pi: 11mm Length, 4mm M2.5

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

These 1/4-long hexagonal female-female aluminum standoffs keep parts spaced 0.25 inches (6.4 mm) apart. They are like elongated, 3/16″-wide hex nuts,

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

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

Pololu - Paul's dead reckoning robot

Pololu - Aluminum Standoff for Raspberry Pi: 11mm Length, 4mm M2.5

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Pololu RP5/Rover 5 Expansion Plates

Pololu RP5/Rover 5 Expansion Plate RRC07B (Wide) Transparent Clear

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

F-F threaded bushing M3, length 10mm, white polyamide - Kamami on