NELSON STUD WELDING SPECIFICATION: CFL Fully Threaded Studs
CFL
Nelson CFL studs are recommended for fastening applications where threads are needed for the full fastener length. CFL studs a re available in thread diameters of 1/4"-20 through 1”-8. Nelson fully threaded studs have a short length of pitch diameter weld base. Most of this length is melted off during the stud welding process so that usable thread extends down to the top of the weld flash on installed studs. For similar function studs, see CFP Small Diameter Threaded studs, CJL Reduced Base studs, L Partially Threaded studs, HBA Aluminum Full Base Diameter Threaded studs, HBL Full Base Diameter Threaded studs, Banding Cable Hangers, CrimpLok™ Cable Hangers, and Watertight nuts.
When ordering, specify Type, Diameter, Before Weld Length, Material, Quantity, and Part Number Example: CFL 3/8-16 x 2-1/4”; Mild Steel; 10,000 pieces; #101017193 Thread Minimum Burn Weld Base Weld Base Stud Diameter Length Size Off Length C A
Weld Flash Size E
F
Required Standard Accessories
Flash Clearance
Ferrule
Grip
Chuck
Foot
1/4-20
0.780
0.125
0.215
0.142
0.359
0.109
0.437
100101067
501001007
500001007
502001137
5/16-18
0.780
0.125
0.275
0.142
0.437
0.109
0.500
100101024
501001006
500001009
502001137 502001137
3/8-16
0.812
0.125
0.330
0.190
0.500
0.125
0.562
100101025
501001007
500001011
7/16-14
0.812
0.125
0.389
0.205
0.562
0.125
0.625
100101026
501001008
500001012
502001137
1/2-13
0.875
0.125
0.448
0.221
0.625
0.156
0.680
100101027
501001009
500001014
502001137
9/16-12
1.062
0.187
0.503
0.221
0.750
0.156
0.813
100101011
501001011
500001015
502001138
5/8-11
1.000
0.187
0.562
0.284
0.781
0.187
0.843
100101028
501001011
500001016
502001138
3/4-10
1.250
0.187
0.680
0.346
0.937
0.250
1.031
100101029
501001014
500001018
502001002
7/8-9
1.500
0.187
0.798
0.377
1.125
0.312
1.250
100101140
501001015
500001019
502001003
1-8
1.500
0.250
0.913
0.500
1.375
0.375
1.437
100101045
501001016
500001085
502001003
Stud lengths shorter than those shown above can be supplied in sizes 1/4"-20 through 1/2"-13 by using special low profile ceramic ferrules. All low profile ferrules, except the 1/4”-20 ferrule, were designed for use with full diameter weld base studs. For this reason, the weld flash size and flash clearance are increased. The minimum length, weld flash clearance, recommended deviance, ferrules, and ferrule grip numbers are shown below. Thread Size
Minimum Stud Length
E
F
Ferrule
Grip
Chuck
Foot
1/4-20
0.640
0.359
0.109
0.437
100101077
501001005
500001007
502001137
5/16-18
0.640
0.437
0.109
0.500
100101030
501001007
500001009
502001137
Weld Flash Size
Flash Clearance
Required Standard Accessories For Short Studs
3/8-16
0.687
0.500
0.125
0.593
100101031
501001008
500001011
502001137
7/16-14
0.687
0.593
0.140
0.656
100101032
501001009
500001012
502001137
1/2-13
0.750
0.687
0.156
0.750
100101033
501001001
500001014
502001138
MATERIALS: Studs are available in Low Carbon Mild Steel and Stainless Steel. For specific grade information, physical and chemical properties, conforming standards, and information on stud plating and heat treating, please see General Material Specifications. THREADS: Standard CFL studs are available with up to 3” of thread length in UNC-2A coarse thread. Other thread pitch series, and thread lengths greater than 3” are available as special order. FLUX: All Nelson partially threaded CFL studs have a solid flux load. Visit our website www.NelsonStudWelding.com for a list of our standard stock products. Nelson Stud Welding, Inc. 7900 West Ridge Road Elyria, Ohio 44035
PH 1-800-NEL-WELD 1-800-635-9353
E-mail:
[email protected]
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