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The 3M SecureFit Hard Hat Suspension Replacement SFH-700-RS4 is an original equipment manufacturer (OEM) 4-point ratchet suspension system designed for the 3M SecureFit H-700, H-700T, and H-800 Series hard hats. It features a self-adjusting mechanism that redistributes force across the forehead and allows for multi-level vertical and spatial calibration to customize the fit between the user's head and the hard hat shell.
Features
Pressure Diffusion Technology: Mechanism flexes to self-adjust to cranial anatomy and reduces forehead pressure by up to 30% compared to legacy H-series suspensions
Smooth-Operating Ratchet: Micro-indexing turn-knob system functional with industrial work gloves
Low-Profile Cranial Seating: Rear ratchet section sits on the occipital lobe to prevent shifting or tipping during overhead work
Multi-Level Vertical and Spatial Calibration: Allows for adjustable clearance between the skull and the hard hat shell dome
Reverse Donning Configuration: Certified for 180-degree rotation within the shell without reducing impact protection
Integrated Brow Pad (SFH-700-BP): Moisture-wicking, washable, and replaceable
Cross-PPE Integration: Clearanced for attachment of cap-mounted earmuffs, faceshields, welding hoods, and communication headsets
Specifications
Suspension Weight: 74 g (2.6 oz)
Overall Width: 21.59 cm (8.5 in)
Overall Height: 13.97 cm (5.5 in)
Overall Length: 17.78 cm (7 in)
Volumetric Displacement: 5642.45 cm³ (344.32 in³)
Head Circumference Range: 50 cm to 64 cm
Fits Hat Size Range: 6 ¼ to 8
Case Dimensions (L x W x H): 56.9 cm x 46.7 cm x 42.4 cm (22.4 in x 18.4 in x 16.7 in)
