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captive fastener corporation
201-337-6800 FAX: 201-337-1012
• www.captive-fastener.com
2014
CKFE and CKFSE threaded and non-threaded standoffs allow
screws to be inserted through multiple layered boards for
stacked assemblies. All fasteners from Captive Fastener are
identical to industry standards so that they can be fed through
standard automatic insertion equipment.
Series Material Finish
CKFE Carbon Steel
CKFSE 300 Series Passivated ASTM A967
Stainless Steel
*See Finish Spec. on Page 6.
Dimensions & Specifications
INCH (in.)
Thru
Hole L
Thread +.004 Part Number Length ±.005 in. A B +.003
Size -.003 Carbon Steel Stainless Steel .125 .250 .375 .500 .625 .750 .875 ±.003 ±.005 -.000 Min.
#4-40 CKFE440 CKFSE440 -4 -8 -12 -16 -20 -24†.184 .219 .166 .17
#6-32 CKFE632 CKFSE632 -4 -8 -12 -16 -20 -24†-28†.231 .281 .213 .22
.116 CKFE116 CKFSE116 -4 -8 -12 -16 -20 -24†.184 .219 .166 .17
.143 CKFE143 CKFSE143 -4 -8 -12 -16 -20 -24†-28†.231 .281 .213 .22
E=minimum thread length Full .375 ±.015
Thread +.10 Part Number Length ±.13 mm A B +.08
Size -.08 Carbon Steel Stainless Steel 3 4 6 8 10 12 14 16 ±.08 ±.13 -.00 Min.
M3x0.5 CKFEM3 CKFSEM3 -3 -4 -6 -8 -10 -12 -14 -16†4.68 5.56 4.22 4.4
3.6 CKFE3.6 CKFSE3.6 -3 -4 -6†-8†-10†-12†-14†-16†5.87 7.14 5.41 5.5
4.2 CKFE4.2 CKFSE4.2 -3†-4†-6†-8†-10†-12†-14†-16†6.86 8.74 6.4 7.1
E=minimum thread length (where applicable) Full 9.5 ±.4
Thread: Internal 2B, ANSI B1.1 (6H, ANSI/ASME B1.13M).
Use in: CKFE - Materials with Rockwell Hardness of B-60 or less.
CKFSE - Materials with Rockwell Hardness of B-70 or less.
Part Number Structure:
CKFE 440-4
Length Code
Thread/Hole Size
Series
AB
1.5 mm
.060 in.
max.
E
L
Installation & Performance Data
Fiberglass .060 in. (1.5 mm)
Thread Installation Force Pushout Torque-out
Size (lbs.) (lbs.) (in.-lbs.)
#4-40 400 65 14
#6-32 500 80 29
Thread Installation Force Pushout Torque-out
Size (kN) (N) (N•m)
M3 2.22 295 1.35
INCH
(in.)
METRIC
(mm) METRIC (mm)
Note: CKFE & CKFSE broaching
standoffs are designed for unplated
through-holes. When installed in
plated through-holes, a hole
tolerance of +.005 - .001 in.
(+.13 - .03 mm) should be used.
When used in plated through-holes
performance will be reduced and
plating may be damaged by knurl.
† Not stocked, available on special order. Note: Min Panel Thickness .060 in. (1.5mm)
Electro Tin Plating
ASTM B545 Class B
(Zinc* Clear Optional)
Broaching-Type Standoffs
Series CKFE & CKFSE
41550_Captive_2011_Text_Catalog 4/4/14 2:12 PM Page 56
