1/4" Aluminum standoff with 4-40 internal threads. Round, 1/4" diamiter. Packaged with two 4-40 x 1/4" pan head machine screws for each standoff. Catalog number: 22152. Brand: Tinkering Supplies. Brand's Part Number: H02215-04Z.
1/2" Aluminum standoff with 4-40 internal threads. Round, 1/4" diamiter. Packaged with two 4-40 x 1/4" pan head machine screws for each standoff. Catalog number: 22160. Brand: Tinkering Supplies. Brand's Part Number: H02216-04X.
3/4" Aluminum standoff with 4-40 internal threads. Round, 1/4" diamiter. Packaged with two 4-40 x 3/8" pan head machine screws for each standoff. Catalog number: 22178. Brand: Tinkering Supplies. Brand's Part Number: H02217-04V.
1" Aluminum standoff with 4-40 internal threads. Round, 1/4" diamiter. Packaged with two 4-40 x 1/2" pan head machine screws for each standoff. Catalog number: 21717. Brand: Tinkering Supplies. Brand's Part Number: H02171-04U.