Shoulder Screw,1/4-20 -- 5MA49 [5MA49 from Accurate Manufactured Products Group, Inc.]
from Grainger Industrial Supply

Shoulder Screw, 18-8 SS, Plain Finish, Truss Head Style, 6 Lobe With Pin Drive Type, Drive Size T27, Thread Size 1/4-20, Shoulder Diameter 5/16 In, Screw Shoulder Length 1/4 In, Thread Length 1/4 In, Head Dia 9/16 In, Head Height 1/4 In, Min Tensile Strength 80,000 PSI, Rockwell Hardness B85-B95 [See More]

  • Tamperproof / Tamper-resistant Drives: Torx® Pin
  • Units: Inch
  • Screw Type: Shoulder Screw; Tamperproof Screw
  • Shoulder Diameter: 0.3125