Profiled nose to fit on flat or sloping beam flanges
3/8” thread engagement to enable full loading for vibration resistance
Galvanized cast malleable iron body
13 gauge galvanized top-hat bracket designed to fit bearing bar gauges 1/4”, 3/16” and 1/8” fixed at 1-3/16” centers
2-1/4” cap screw bolt length to accommodate a wide range of bearing bar depths
Stepped tail fits beam flanges from 1/8” to 3/4”
Grate-Fast 3D & 4D (#SFGF-1-3D/#SFGF-1-4D)
Grate-Fast 3D & 4D are available from stock with a 3-1/4” OR 4-1/4” long cap screw bolt for applications with greater grating depth. Bolts longer than 4-1/4” are available on special order.
Top Hat Bracket (#TH-1)
13 gauge top-hat saddle
clip available individually
Position the pre-assembled Grate-Fast with the body between the grating bars and the arrow on the nose pointing toward the steelwork with the top-hat bracket resting on the bearing bars. (Figure 1)
Slide the Grate-Fast toward the steelwork until the nose fits under the beam flange. Where necessary, adjust the body/bolt to the approximate flange thickness/grating depth. (Figure 2)
Tighten the cap screw bolt using the hexagon key. The Grate-Fast body casting will automatically rotate until it locks under the bearing bar, with the nose under the flange. Continue tightening to the recommended torque. Grate-Fast is now securely in position. (Figure 3)
Animated Installation Guide
› Malleable iron to DIN 1692,
corresponding to ANSI/ASTM A47-84-32510
› Minimum yield strength: 32,500 psi
› Minimum tensile strength: 50,000 psi
› Modulus of elasticity: 25,000,000 lbs.
› Minimum elongation: 10% in 2”
› BHN range: 110–130
› Machinability: 120
Bracket: ASTM-A 446 76 Grade D
Socket head cap screw bolt: AISI C1008,
galvanizing ASTM B695 Class 50
Weight per 100 units: 44 lbs.
Grate-Fast: 22ft. lbs.
Ultimate Load: 800 lbs.
Average Side Load (depending on depth and coating): 450 lbs.
Struct-Fast® hardware requires only one installer. All of our products come standard pre-assembled, and installation requires no power tools or welding equipment.
Struct-Fast® products replace labor intensive methods, and improve the engineering integrity of the fastening process while reducing labor costs.
Struct-Fast® hardware is secure, adjustable, transferrable and removable. Galvanized or stainless options solve your environmental challenges, and our models fit all common sizes of beams and grating.