IBM Infoprint 6500-v05

519
Fastener Sizes Torque for Routine Tightening of Threaded Fasteners
4-40 UNC & 4-48 UNF 4 ± 1 in lb
6-32 UNC & 6-40 UNF 11 ± 1 in lb
8-32 UNC & 8-36 UNF 19 ± 1 in lb
10-24 UNC & 10-32 UNF 25 ± 1 in lb
Carbon Steel Fasteners (ANSI B18.6.3 - 1972)
Fastener Size
Into Alum. or Brass
25,000 psi ultimate
tensile strength
Into Steel
60,000 psi ultimate
tensile strength
Into Weld/Press
Studs or Nuts
Into Medium
Carbon Steel
Fasteners
100,000 psi
ultimate tensile
strength