Features MSA hard hat and helmet suspensions are used to replace worn, damaged, or aged suspensions in compatible MSA-brand hard hats and helmets. Hard hat suspension replacement should be considered when suspensions are more than one year old or when they show signs of wear and tear. Hard hat and helmet suspensions are the part of the hard hat or helmet that rests on the wearer's head. Suspensions provide a gap between the head gear and head, which helps absorb shock and redirect impact force away from the head and spine. Hard hat suspension replacement should be completed yearly as part of normal maintenance and inspection practices or earlier if the suspension shows signs of wear. The brand of the replacement helmet suspension should match the brand of the helmet. Head Protection Suspension Type / Pinlock (4-Point) Fits Hat Size / 6-1/2 to 8 For Use With / V-Gard(R) Compatible Hard Hat/Helmet Brand Name / MSA SAFETY Compatible Hard Hat/Helmet Grainger Part Number / 10E656, 22EY73, 22EY74, 22EY75, 22EY79, 22EY80, 22EY81, 22EY82, 22EY83, 22EY85, 22EY86, 22EY87, 22EY88, 22EY89, 38ZL94, 38ZM05, 3PUP8, 3PUP9, 3RRL2, 3RRL3, 3RRL4, 3RRL5, 3RRT2, 3RRT3, 4LN68, 4LN76, 4LN83, 4LN85, 4LN94, 4LP02, 4MD02, 8UWM3, 9D111, 9FLG7 Compatible Hard Hat/Helmet Manufacturer Part Number / 10155231, 10156374, 454730, 454731, 454732, 454733, 454734, 454735, 454736, 461180, 463111, 463942, 463943, 463944, 463945, 463946, 463947, 463948, 464658, 464852, 466354, 466355, 466356, 473284, 473285, 475235, 476928, 478237, 484340, 488148, 488398, 489360, 815558, 815562 Number of Suspension Points / 4 Suspension Adjustment Type / Pinlock