PEM SMTBSO™ ReelFast® Surface-Mount Fasteners

PEM SMTBSO™ ReelFast® Surface-Mount Fasteners are designed with internal blind-hole threads that securely mount onto PC boards for less risk of board damage during assembly. No PCB hole is required to solder these fasteners onto the board, and this design construction enables copper traces to run under the fastener to better utilize space in applications. The fastener cutout also provides enhanced performance by allowing for localized heat-up of the area in contact with the solder. PEM SMTBSO ReelFast Surface-Mount Fasteners feature lead-free carbon steel material with PEM “Two Groove” trademark notches for easy identification. The series is available in two options: the unified variant with a 0.112-40 (#4-40) thread size and a metric version with an M3 x 0.5 thread size x pitch.

Features

  • No hole required to solder fastener to PC board
  • Internal blind-hole threads securely mounts onto PC board for less risk of damage to PC board during assembly
  • Enhanced performance due to cutout that allows for localized heat-up of the area in contact with the solder
  • Enables copper traces to run under the fastener to better utilize board space
  • For use in solder fastener in place using standard surface-mount techniques
  • PEM “Two Groove” trademark notches for easy identification
  • Lead-free carbon steel fastener material
  • Electroplated tin finish, ASTM B 545, Class A with clear preservative coating, annealed

Specifications

  • SMTBSO-440-6ET
    • 0.112-40 (#4-40) thread size
    • 440 thread code
    • 6 length code
    • 0.187″ length ±0.005
    • Internal, ASME B1.1, 2B thread specification
  • SMTBSO-M3-4ET
    • M3 x 0.5 thread size x pitch
    • M3 thread code
    • 4 length code
    • 4mm length ±0.13
    • Internal, ASME B1.13M, 6H thread specification

Design Example

PEM SMTBSO™ ReelFast® Surface-Mount Fasteners

Dimensions

PEM SMTBSO™ ReelFast® Surface-Mount Fasteners

PEM SMTBSO™ ReelFast® Surface-Mount Fasteners