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  2. Anchor Channels
  3. T-bolts

T-bolts

    All JORDAHL® T-bolts are purpose made to ensure reliable and accurate connection with the range of JORDAHL® channels. The T-bolts face enter into the channel profiles and rotate 90 degrees to safely lock in position. Lines on the end of the T-bolts indicate the head position for easy checking after installation.

    Determining the T-Bolt Length
    T-boltTotal m + s + u [in. (mm)]
    M 63/8"   (8.8)
    M 87/16" (11.3)
    M 109/16" (13.9)
    M 1211/16" (17.3)
    M 167/8" (21.8)
    M 201 1/16" (27.0)
    M 241 9/32" (32.5)
    M 271 " (35.8)
    M 301 1/2" (38.6)
     img

    l = T-bolt length
    lk = Clamping length  (thickness of the  attached component)
    f = Profile lip
    m = Nut height
    ISO 4032

    s = Washer thickness  ISO 7093-1
    u = T-bolt projection  ISO 4753

    Profile Lip Thickness f in. (mm)
    Profilef
    W 72/485/8 (15.5)
    W 55/421/2 (12,9)
    W 53/347/16 (11,5)
    W 50+5/16 (8)
    W 50/305/16 (8)
    W 40+1/4       (6)
    W 40/221/4       (6)
    Profile Lip Thickness f in. (mm)
    Profilef
    K 38/171/8   (3)
    K 28/153/32 (2,3)
    Profile Lip Thickness f in. (mm)
    Profilef
    XW 64/443/8 (10)
    XW 53/345/16 (7,5)
    XW 38/237/32 (5,5)
    XW 29/2013/64 (5)

    Required T-bolt length (l) = lk +f + (m+s+u)

    Example

    Checking T-bolt length required for connecting a 2-5/8"  thick component to JORDAHL® anchor channel JTA-W  53/34, using T-bolt type JB M16

    Channel lip thickness f = 7/16" (0.44")

    Clamping length needed lk = 2-5/8" (2.63")

    m+s+u dimension for M16 = 7/8" (0.88")

    The T-bolts are supplied with nuts.
    Washers must be ordered separately (see page 44).

    Therefore minimum required T-bolt length   l = 0.44" + 2.63 + 0.88" = 3.95"

    Select T-bolt with length greater than  3.95" = JB M 16 × 4" (100mm)

    If shims will be needed behind the component add their  thickness to the calculation. When shimming always get  guidance from the responsible engineer regarding  maximum shimming thickness allowed in case bolt  bending is a consideration,

     

    JORDAHL® Double-notch toothed T-bolts
    JORDAHL® Hammer-head T-bolts
    JORDAHL® Hook-head T-bolts
    JORDAHL® Toothed T-bolts