Crawford Products - Riveting and Fastening Systems
 
 
 
 
 

Huck Fasteners - Lockbolt: C50L®


The rugged C50L® PowerBolt Huck fastener is an alternative to Grade 5 bolts. Available in diameter ranging from 1/2' to 1-3/8", a variety of materials and head styles, the C50L® is ideal for applications where consistent, uniform clamp force is required.

  • Fastener Dimensions
  • Grip Data & Dimensions
  • Collar Dimensions
  • Tensile Strength Data
  • Huck Fasteners     
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    APPLICATION INFO & PRICING

    FASTENER DIMENSIONS




    Round Head Truss Head C50LT Truss Head C50L30 90° Flush Head
    Dia. A B C B C B C B C
    1/2 (16) .515 - .493 59/64 5/16 59/64 15/64 1 3/32 17/64 29/32 1/4
    5/8 (20) .642 - .617 1 9/64 25/64 1 9/64 19/64 1 3/8 21/64 1 5/32 5/16
    3/4 (24) .768 - .741 1 3/8 15/32 1 3/8 23/64 1 3/8 3/8
    7/8 (28) .895 - .866 1 19/32 35/64 1 19/32 13/32 1 19/32 7/16
    1 (32) 1.022 - .990 1 53/64 39/64 1 53/64 15/32 1 27/32 1/2
    1 1/8 (36) 1.149 - 1.098 2 1/16 11/16
       
    1 3/8
    — See RamBolt for specifications.

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    GRIP DATA & DIMENSIONS



    Grip is the actual thickness of material to be fastened. Grip includes C dimension on 90° flush head and 60° water tight fasteners. Grips listed are not necessarily available in every head style.

    Contact HUCK for grips not shown.

    Tolerances: Dimension D- + 1/32, Dimension E +3/16, -1/16

    Grip
    Grip Range
    1/2"Diameter
    5/8"Diameter
    3/4"Diameter
    7/8"Diameter
    1"Diameter
    1 1/8" Diameter
    (-16)
    (-20)
    (-24)
    (-28)
    (-32)
    (-36)
    No.
    min - max
    D
    E
    D
    E
    D
    E
    D
    E
    D
    E
    D
    E
    4
    1/4 - 1/2
    1.213
    3 11/64
    1.433
    3 21/32
    1.518
    4 5/32
    8
    1-2 - 3/4
    1.463
    3 27/64
    1.683
    3 29/32
    1.768
    4 13/32
    1.921
    4 11/16
    2.073
    5 3/8
    12
    3/4 - 1
    1.713
    3 43/64
    1.933
    4 5/32
    2.018
    4 21/32
    2.171
    4 15/16
    2.323
    5 5/8
    16
    1 - 1 1/4
    1.963
    3 59/64
    2.183
    4 13/32
    2.268
    4 29/32
    2.421
    5 3/16
    2.573
    5 7/8
    20
    1 1/4 - 1 1/2
    2.213
    4 11/64
    2.433
    4 21/32
    2.518
    5 5/32
    2.671
    5 7/16
    2.823
    6 1/8
    24
    1 1/2 - 1 3/4
    2.463
    4 27/64
    2.683
    4 29/32
    2.768
    5 13/32
    2.921
    5 11/16
    3.073
    6 3/8
    28
    1 3/4 - 2
    2.713
    4 43/64
    2.933
    5 5/32
    3.018
    5 21/32
    3.171
    5 15/16
    3.323
    6 5/8
    32
    2 - 2 1/4
    2.963
    4 59/64
    3.183
    5 13/32
    3.268
    5 29/32
    3.421
    6 3/16
    3.573
    6 7/8
    36
    2 1/4 - 2 1/2
    3.213
    5 11/64
    3.433
    5 21/32
    3.518
    6 5/32
    3.671
    6 7/16
    3.823
    7 1/8
    40
    2 1/2 - 2 3/4
    3.463
    5 27/64
    3.683
    5 29/32
    3.768
    6 13/32
    3.921
    6 11/16
    4.073
    7 3/8
    44
    2 3/4 - 3
    3.713
    5 43/64
    3.933
    6 5/32
    4.018
    6 21/32
    4.171
    6 15/16
    4.323
    7 5/8
    48
    3 - 3 1/4
    3.963
    5 59/64
    4.183
    6 13/32
    4.268
    6 29/32
    4.421
    7 3/16
    4.573
    7 7/8
    52
    3 1/4 - 3 1/2
    4.213
    6 11/64
    4.433
    6 21/32
    4.518
    7 5/32
    4.671
    7 7/16
    4.823
    8 1/8
    56
    3 1/2 - 3 3/4
    4.463
    6 27/64
    4.683
    6 29/32
    4.768
    7 13/32
    4.921
    7 11/16
    5.073
    8 3/8
    5.250
    8 9/16
    60
    3 3/4 - 4
    4.713
    6 43/64
    4.933
    7 5/32
    5.018
    7 21/32
    5.171
    7 15/16
    5.323
    8 5/8
    5.500
    8 13/16
    64
    4 - 4 1/4
    4.963
    6 59/64
    5.183
    7 13/32
    5.268
    7 29/32
    5.421
    8 3/16
    5.573
    8 7/8
    5.750
    9 1/16
    68
    4 1/4 - 4 1/2
    5.213
    7 11/64
    5.433
    7 21/32
    5.518
    8 5/32
    5.671
    8 7/16
    5.823
    9 1/8
    6.000
    9 5/16
    72
    4 1/2 - 4 3/4
    5.463
    7 27/64
    5.683
    7 29/32
    5.768
    8 13/32
    5.921
    8 11/16
    6.073
    9 3/8
    6.250
    9 9/16
    76
    4 3/4 - 5
    5.713
    7 43/64
    5.933
    8 5/32
    6.018
    8 21/32
    6.323
    9 5/8
    6.500
    9 13/16
    80
    5 - 5 1/4
    5.963
    7 59/64
    6.573
    9 7/8
    6.750
    10 1/16
    84
    5 1/4 - 5 1/2
    6.823
    10 1/8
    7.000
    10 5/16
    88
    5 1/2 - 5 3/4
    7.073
    10 3/8
    7.250
    10 9/16
    92
    5 3/4 - 6
    7.323
    10 5/8
    7.500
    10 13/16
     
    * 1 3/8
    -- See RamBolt for specifications.

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    COLLAR DIMENSIONS


    Collar
    Dia.
    F
    G
    H
    J
    K
    LC
    1/2
    .515 - .540
    .800 - .765
    .645 - .610
    5/8
    .650 - .665
    1.010 - .970
    .875 - .8453
    3/4
    .775 - .790
    1.180 - 1.165
    .960 - .930
    7/8
    .910 - .935
    1.375 - 1.345
    1.113 - 1.083
    1
    1.025 - 1.050
    1.575 - 1.535
    1.275 - 1.230
    1 1/8
    1.150 - 1.180
    1.770 - 1.740
    1.425 - 1.385
    3LC1
    1/2
    .515 - .535
    .807 - .793
    .746 - .716
    .156 - .094
    1.031 - .969
    5/8
    .650 - .665
    1.010 - .970
    .959 -.929
    .187 - .125
    1.281 - 1.218
    3/4
    .775 - .790
    1.200 - 1.170
    1.147 - 1.117
    .218 - .156
    1.531 - 1.468
    7/8
    .910 - .930
    1.375 - 1.360
    1.330 - 1.300
    .250 - .187
    1.625 - 1.562
    1
    1.030 - 1.050
    1.575 - 1.550
    1.515 - 1.485
    .281 - .218
    1.906 - 1.843
    1 1/8
    1.150 - 1.180
    1.770 - 1.740
    1.700 - 1.670
    .312 - .250
    2.156 - 2.093
    8LC2
    1/2
    .515 - .535
    .800 - .775
    .500 - .470
    5/8
    .650 - .665
    1.010 - .970
    .700 - .670
    3/4
    .775 - .790
    1.180 - 1.165
    .745 - .715
    7/8
    .910 - .930
    1.375 - 1.360
    .863 - .833
    1
    1.030 - 1.050
    1.575 - 1.550
    .980 - .950

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    TENSILE STRENGTH DATA


    Installed Fastener Values 1

    Installed Fastener Values 1 
     
    Carbon Steel Pins
    2024 Aluminum Pins
       
    LC-2R or 3LC-2R Collars
    LC-F or 3LC-F Collars
       
    Dia.
    Shear
    Clamp
    Tensile
    Shear
    Clamp
    Tensile
           
    1/2
    14400
    12050
    17050
    7300
    5900
    7850
           
    5/8
    22500
    19200
    27100
    11400
    9200
    12300
           
    3/4
    32400
    28400
    40100
    16400
    13300
    17700
           
    7/8
    43400
    39250
    55450
           
    1
    56500
    51500
    72700
           
    1 1/8
    69500
    58450
    82950
           

    6061 Aluminum Pins
    CRES Pins
    LC-1 or 3LC-1 Collars
    LC-2CU or 3LC-2CU Collars
    Dia.
    Shear
    Clamp
    Tensile
    Shear
    Clamp
    Tensile
    1/2
    5300
    4400
    4900
    13900
    12050
    17050
    5/8
    8300
    6900
    7670
    21000
    19200
    27100
    3/4
    11900
    9950
    11040
    30300
    28400
    40100
    7/8
    1
    1 1/8

    1 3/8 — See Ram Bolt for specifications.

    1 Minimum values , in pounds, of installed fasteners. Round head, in carbon steel equivalent to ASTM A325 high strength bolts. Meets requirements of MIL-P-23469.

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