Rebar Rock Bolts

Nuts
Domenuts

• for 3/4” thread A.F. = 1-1/8” square
• for 7/8” thread A.F. = 1-1/8” square
• for 1” thread A.F. = 1-5/8” hex

Plain Nuts - used with pinched thread

• for 3/4” thread A.F. = 1-1/8” square
• for 7/8” thread A.F. = 1-1/8” square with flange
• for 1” thread A.F. = 1-5/8” hex

Torq Bolts - system available

• for 3/4” thread and 7/8" thread A.F. = 1-1/8” square 

Hardened Round Washers

• to ASTM F436 specifications
• for 3/4” thread:
  I.D. = 13/16”, O.D. = 1-15/32”, T = 0.122” to 0.177”
• for 7/8” thread:
  I.D. = 15/16”, O.D. = 1-3/4”, T = 0.136” to 0.177”
• for 1” thread:
  I.D. = 1-1/8”, O.D. = 2”, T = 0.136” to 0.177”

Spherical Seat (Compensation) Washers

• ductile iron ASTM A536 Gr. 65-45-12
• for 3/4” thread:
  I.D. = 13/16”, O.D. = 2”, H = 13/16” (model TSW-4)
  I.D. = 15/16”, O.D. = 2”, H = 1/2” (model TSW)
• for 7/8” & 1” thread:
  I.D. = 1-1/16”, O.D. = 2”, H = 1/2” (model TSW-1)

Installation Tools - for stopers/jacklegs
Forged Head Rebar Driver (Dollie)

• 1-1/8” square driver
• available with 7/8” hex socket or 3-1/4” long hex shank

Threaded Rebar Nutrunners

•  1-1/8” square nutrunner (for 3/4” & 7/8” bolts)
• 1-5/8” hex nutrunner (for 1” bolts)
• available with 7/8” hex socket or 3-1/4” long hex shank

TANDEM ANCHOR^®

• patented
• slotted shell base removes the chance of severely twisted shells with leaves buckled inward onto the thread
• the system incorporates both mechanical (expansion shell) & resin anchorage

Other rebar product variations

• coupled bolts
• notched bolts (for bending)

TANDEM ANCHOR^®
Components

• #6 (3/4") or #7 (7/8") headed rebar
• expansion shell (usually D8)
• support nut
• washer (2" or 2-1/4")
• for 1-3/8" or 1-1/2" drill holes
• TANDEM ANCHOR^® Bolts are "POINT ANCHOR BOLTS" because the full length of the bolt is placed under tension. Resin is inserted into the drilled hole followed by the bolt. Rotation of the bolt mixes the resin and causes the expansion shell to expand and place the bolt in tension. This system incorporates both mechanical (expansion shell) and resin anchorage.

Two Piece TANDEM ANCHOR^®
Components

• #6 (3/4") or #7 (7/8") rebar
• 5/8" or 3/4" headed smooth bar
• coupling
• expansion shell (usually D8)
• support nut
• washer (2" or 2-1/4")
• TANDEM ANCHOR^® Combos are "POINT ANCHORS". The primary difference in this unit and the TANDEM ANCHOR^® is the utilization of two or more individual rods to create a single bolt. This is necessary when the bolt, to be installed, is longer than the coal seam is high and the bending of a single bolt is difficult or impossible.