ADD 'C' FOR OPTIONAL
CENTER MOUNTING HOLE
ADD 'W' FOR OPTIONAL
LOCK AND FLAT WASHER
DRIVE SCREW
'M' FOR M2.5 HEX
'S' FOR 3/32 HEX
PART NUMBER CODE
SERIES
PART NO
LENGTH
(EX. 480 = 4.80")
FINISH
(SEE FINISH TABLE)
MOUNTING HOLE
(SEE MOUNTING TABLE)
ADD 'P' FOR OPTIONAL
LOCK PATCH
ADD 'V' FOR OPTIONAL
VISUAL INDICATOR
426D - [LLL] [H] [D] [F] - [C] [W] [N] [P] [V]
PART DEFINITION
(REQUIRED)
PART NUMBER OPTIONS
(NOT REQUIRED)
OPTIONAL LOCK NUT
ADD 'A' FOR MS21043-04 SILVER PLATED A286 SS
ADD 'N' FOR MS21042-04 CADMIUM PLATED STEEL
PART#1 EXAMPLE: 426D-480UMG
4.80" LENGTH, M2 MOUNT HOLES, METRIC M2.5 SOCKET HEAD, GOLD CHEM FILM
PART#2 EXAMPLE: 426D-480UMG-CP
SAME AS ABOVE PLUS CENTER MOUNTING HOLE AND LOCK PATCH OPTIONS
3/32 OR M2.5
ACROSS FLATS
.10
2.5
.25 MIN
6.4 MIN
'P' OPTION
NYLON PATCH PER MIL-F-18240
PROVIDES ADDITIONAL RESISTANCE
TO SHOCK AND VIBRATION
.125
3.18
(ADD .06 IF 'W' OPTION INCLUDED)
(ASSY LENGTH [L.LL] - X) / 2
.20
5.1
(ADD .10 IF 'N' OR 'A' OPTION INCLUDED)
ASSY LENGTH (L.LL)
X
(SEE LENGTH TABLE)
X/2
('C' OPTION)
ADD .19 TO SCREW LENGTH
IF 'V' OPTION INCLUDED
BOTTOM VIEW
'W' OPTION
LOCK AND FLAT WASHERS
'A' OR 'N' OPTION
PREVENTS DISASSEMBLY OF
REAR WEDGE FROM SCREW
.34
8.6
.225
5.72
.225
5.72
'V' OPTION
VISUALLY CONFIRMS LOCKED IN PLACE
WHEN RED SCREW HEAD IS CONCEALED
[H] MOUNTING TABLE
DASH NO
DESCRIPTION
A
NO MOUNTING HOLES
R
.068/.073 THRU
.156 X
.20
100
X
.140
T
#0-80 UNF-2B THREADS
S
#2-56 UNC-2B THREADS
U
M2 X .4-6H THREADS
M
M2.5 X .45-6H THREADS
[LLL] LENGTH TABLE
ASSY LENGTH
[LLL]
[H] MTG
X
[C] OPTION
X/2
480 - 749
.900 .450
750 - 849
1.900 .950
850 & UP
2.900 1.450
OTHER LENGTHS AVAILABLE UPON
REQUEST
[F] FINISH TABLE
DASH NO
DESCRIPTION
A
NONE
C
CHEM FILM PER MIL-DTL-5541, CLASS 1A, TYPE I (CLEAR)
G
CHEM FILM PER MIL-DTL-5541, CLASS 1A, TYPE I (GOLD)
B
BLACK ANODIZE PER MIL-A-8625, TYPE II, CLASS 2
H
HARD BLACK ANODIZE PER MIL-A-8625, TYPE III, CLASS 2
N
NICKEL PLATE PER QQ-N-290, CLASS 1, GRADE G, BRIGHT
E
ELECTROLESS NICKEL PER MIL-C-26074, CLASS 4, GRADE B, BRIGHT
T
TRIVALENT CHEM FILM PER MIL-DTL-5541, CLASS 1A, TYPE II (CLEAR), RoHS COMPLIANT
ALL THREADS ARE GAUGED PRIOR TO PLATING
D
C
B
A
B
C
D
1
2
3
4
5
6
7
8
8
7
6
5
4
3
2
1
E
F
E
F
SHEET 2 OF 2
SCALE: NONE
DWG. NO.
C
SIZE
A
REV
02/13
426D-DS