MIL-DTL-642/12C
The Part or Identifying Number (PIN) consists of the letter M, the basic specification number, the
specification sheet number, and a number for plug type. (see table I)
M
642
/12
-1
Type designation
Specification sheet number
Specification number
M prefix
PIN example: M642/12-1 indicates a terminal screw.
TABLE I. PIN.
Thread
Dash number
Type
ASME B1.1
Terminal screw
.086-64 UNF-2A
1
Shell screw
.112-48 UNF-2A
2
Shell screw
.099-48 UNC-2A
3
Marginal notations are not used in this revision to identify changes with respect to the previous issue due
to the extent of the changes.
Referenced documents. In addition to MIL-DTL-642 this document references the following:
ASME B1.1
CONCLUDING MATERIAL
Custodians:
Preparing activity:
Army CR
DLA - CC
Navy EC
Air Force 85
(Project 5935-2013-054)
DLA - CC
Review activities:
Army AT, AV, CR4, MI
Navy AS, MC, OS, SH
Air Force 19, 99
NOTE: The activities listed above were interested in this document as of the date of this document.
Since organizations and responsibilities can change, you should verify the currency of the information
above using the ASSIST Online database at https://assist.dla.mil .
3