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

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 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 0.5 (13 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.

TFM-M3X15 / DR213 - threaded bushing, hexagonal, 15mm - Kamami on-line store

Hardware :: Standoffs :: Standoffs - Aluminum M/F :: 1949P Aluminum Standoff: 3/4 Length, 4-40 Thread, M-F (4-Pack)

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

Pololu - A-Star 32U4 Robot Controller LV with Raspberry Pi Bridge

Pololu 1950 - Aluminum Standoff: 1 Length, 4-40 Thread, M-F (4-Pack) - Kamami on-line store

Pololu 1971 - Nylon Spacer: 4mm Length, 4mm OD, 2.7mm ID (50-Pack) - Kamami on-line store

Aluminum Standoff for Raspberry Pi: 11mm Length, 4mm M2.5 Thread, M-F (4- Pack)

Pololu - Romi Chassis Expansion Plate - Black

Small Parts 142408RFA Aluminum Female Threaded Round Standoff, 1/4 OD, 1- 1/2 Length, 8-32 Thread Size (Pack of 10) : : Tools & Home Improvement

Pololu 1977 - Nylon Spacer: 20mm Length, 4mm OD, 2.7mm ID (10-Pack) - Kamami on-line store

Aluminium Stand-off / Spacer Range - Proto-PIC

Pololu - A-Star 32U4 Robot Controller LV with Raspberry Pi Bridge

5/8 x 1-1/2 Through Grip Standoffs, Round, Aluminum, Set of 4 - Silver

Pololu 1972 - Nylon Spacer: 6mm Length, 4mm OD, 2.7mm ID (50-Pack) - Kamami on-line store

Pololu 2082 - Aluminum Standoff: 1/4 Length, 2-56 Thread, F-F (4-Pack) - Kamami on-line store