ADD 'C' FOR OPTIONAL
CENTER MOUNTING HOLE
ADD 'K' FOR OPTIONAL
CAPTIVE SCREW FEATURE
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
426C - [LLL] [H] [D] [F] - [C] [K] [P] [V]
PART DEFINITION
(REQUIRED)
PART NUMBER OPTIONS
(NOT REQUIRED)
PART#1 EXAMPLE: 426C-480UMG
4.80" LENGTH, M2 MOUNT HOLES, METRIC M2.5 SOCKET HEAD, GOLD CHEM FILM
PART#2 EXAMPLE: 426C-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
.19
4.9
ASSY LENGTH (L.LL)
.80
20.3
X/2
('C' OPTION)
X
BOTTOM VIEW
'K' OPTION
CAPTIVATES SCREW BY FREE-SPINNING WHEN
WEDGELOCK IS IN RELAXED POSITION
.33
8.4
.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
100
X
.213
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
280 0.900 0.450
330 1.400 0.700
380 1.900 0.950
430 2.400 1.200
480 2.900 1.450
530 3.400 1.700
580 3.900 1.950
OTHER LENGTHS AVAILABLE UPON
REQUEST
[x] 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
08/13
426C-DS
