We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White polyethylene hard hat suspension with four-point ratchet adjustment straps

MSA

MSA 816645 4-point ratchet suspension personal protective equipment

SKU CH-3BJM-PGFEQ MPN 816645

Four-point ratchet suspension adjusts hard hats for a secure, comfortable fit

  • MaterialPolyethylene
  • 4-point ratchet suspension distributes impact force evenly
  • Swing-ratchet mechanism enables quick one-handed size adjustment
  • Fits head sizes 6-1/2 to 8 for broad compatibility
  • Polyethylene construction resists cracking in harsh environments
  • Designed specifically for MSA V-Gard hard hats

Replacement Suspension for MSA V-Gard Helmets

This four-point ratchet suspension fits MSA V-Gard hard hats and adjusts to head sizes from 6-1/2 to 8. It is made from polyethylene and installs without tools. The assembly replaces worn or damaged suspensions on compatible helmets.

Compatible Hard Hat Models and Part Numbers

The suspension works with MSA Safety helmets identified by Grainger part numbers 43FC73, 43FC75 and 43FD93. It uses the same manufacturer part numbers for cross-reference. No other helmet brands or models are supported by this suspension kit.

Lightweight Polyethylene Construction

The polyethylene shell keeps the suspension light for all-day wear. The ratchet mechanism tightens smoothly and holds its setting during movement. The material resists cracking and maintains flexibility in typical working temperatures.

Highlights

  • 4-point ratchet suspension distributes impact force evenly
  • Swing-ratchet mechanism enables quick one-handed size adjustment
  • Fits head sizes 6-1/2 to 8 for broad compatibility
  • Polyethylene construction resists cracking in harsh environments
  • Designed specifically for MSA V-Gard hard hats

Specifications

BrandMSA
Model816645
MaterialPolyethylene

Questions about this item

How many suspension points does the 816645 ratchet system use to distribute impact force?

The MSA 816645 uses a 4-point ratchet suspension to spread impact energy across four contact points on the wearer's head.

Does the polyethylene suspension material retain heat during extended wear in hot environments?

The polyethylene construction is lightweight and does not conduct heat, helping to keep the wearer cooler during all-day use.

Which MSA hard hat shells are compatible with the 816645 suspension for proper attachment?

This suspension fits MSA V-Gard helmets matching Grainger part numbers 43FC73, 43FC75 and 43FD93.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.