.120 [3.05] MAX SCREW ADVANCEMENT
(.300 [7.62] MAX WITH V OPTION)
RECOMMENDED GAP:
.300 [7.62] + PC BOARD THICKNESS
PC BOARD
SERIES 426D WEDGLOCK
COLD PLATE
ASSY LENGTH
(SEE P/N CODE SHEET 2)
.125
3.18
.20
5.1
.270 MAX
6.86 MAX
VIEW OF ASSEMBLY RELAXED
.325
8.26
EXPANDED MIN
VIEW OF ASSEMBLY EXPANDED
.225
5.72
.260
6.60
DRIVE SCREW
FRONT WEDGE
CENTER WEDGE
REAR WEDGE
ALIGNMENT SPRING
ALIGNMENT SPRING
INTERMEDIATE WEDGE
FEATURES
DESIGNED FOR HEAVY SHOCK AND VIBRATION.
•
UNIFORM CLAMPING FORCE AND HIGH THERMAL TRANSFER.
•
NARROW WIDTH FOR MAXIMUM PCB COMPONENT AREA.
•
LIGHT WEIGHT = ASSEMBLY LENGTH X .104 OZ [2.95 G] OR [1.16 G/CM].
•
SPECIAL LENGTHS, FINISH, AND OTHER DESIGN OPTIONS AVAILABLE
•
UPON REQUEST.
MATERIAL
WEDGES: ALUMINUM 6061-T6.
ALIGNMENT SPRINGS: 301 STAINLESS STEEL, PASSIVATED.
ALL OTHER HARDWARE: 18-8 STAINLESS STEEL, PASSIVATED.
PARTS ARE SHIPPED AS COMPLETE ASSEMBLY IN RELAXED STATE EXCEPT
FOR RIVET MOUNT OPTION.
RECOMMENDED DRIVE SCREW TORQUE IS 6 IN-LBS [68 N-CM].
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 1 OF 2
WEDGELOCK DATASHEET
.260 X .225 PROFILE
RSB
UNLESS OTHERWISE SPECIFIED:
SCALE: NONE
DWG. NO.
C
SIZE
TITLE:
NAME
DATE
APPR.
CHECKED
DRAWN
SEE FINISH TABLE
FINISH
MATERIAL
INTERPRET GEOMETRIC
TOLERANCING PER: ASME Y-14.5M
DIMENSIONS ARE IN INCHES
TOLERANCES:
MACHINED SURFACES
63
ANGULAR
1
TWO PLACE DECIMAL
.02
THREE PLACE DECIMAL
.005
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
WAKEFIELD-VETTE. ANY REPRODUCTION IN
PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF WAKEFIELD-VETTE
IS PROHIBITED.
A
DO NOT SCALE DRAWING
REV
02/13
THIRD ANGLE PROJECTION
CAGE CODE
6 FEB 2013
3E7UB
SEE PART DETAILS
426D-DS
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
