R-TECH 524421 Hex Threaded F-F Spacers Brass M4 6mm - Pack Of 25

R-TECH Hexagonal M4 Threaded F-F Brass Spacers - 7mm AF - R-TECH 524421, These 5mm AF hexagonal female to female spacers have M4 tapped holes in both ends and are threaded throughout their entire length. R-TECH 524421 Hex Threaded F-F Spacers Brass M4 6mm - Pack Of 25

Price: 6.74 from Rapid Online Rapid Electronics Ltd.