For lower duty applications and on smaller discs a bolted mounting is sometimes preferred for strength and simplicity, especially for off-road applications (e.g. Rallies) where debris may clog a floating mechanism leading to run-out and disc vibration.
Stiff flat bells should be avoided with a bolted mounting.

• Standard AP Racing disc mounting hole size is 6.40 / 6.45mm diameter.
• Disc to mounting bell Tightening Torque 14.0Nm (10.5 lbs ft).
• AP Racing offer a range of E8 - 6 Lobe bolts, nuts and washers to suit, see below.
  
  - Bolts:-
  - CP3845-100  0.25" UNF x 0.875"
  (22.22mm long / plain section 9.5mm / full thread 12.7mm).
  - CP3845-101  0.25" UNF x 1.00"
  (25.4mm long / plain section 12.7mm / full thread 12.7mm).
  - CP3845-102  0.25" UNF x 1.063"
  (27mm long, plain section 12.7mm, full thread 14.3mm).
• - CP3845-107 0.25" UNF x 1.18"
  (30.2mm long, plain section 17.5mm, full thread 12.7mm).

- Nuts:-

CP2494-117  .25" UNF Nut 7.3mm height

- Washer:-
CP2494-1305  0.25" Stainless Steel Washer, 0.9mm thick.

•  E8 - 6 Lobe Headed Bolt Kits
  These are also available in 8, 10 and 12 bolt wheel sets.
  CP3845-100K08  0.25" x 0.875"  8 bolt kit.
  CP3845-100K12   0.25" x 0.875"  12 bolt kit.
  CP3845-101K12   0.25" x 1.00"  12 bolt kit. 
  CP3845-102K10  0.25" x 1.062"  10 bolt kit. 
  CP3845-102K12  0.25" x 1.062"  12 bolt kit.
  - Each of the above kits contain the required number of CP2494-117 Nut and CP2494-1305 Washer.
• Note:-
  3/8" E8 - 6Lobe Socket available - CP2494-153

Note: Disc mounting tightening torque - 14Nm (10.5lb/ft)