4 Inch Washers for Heavy-Duty Fastening Compatible with 3/8" x 4" Carriage Bolts & 3/4" ID Washers

Did you know 32% of industrial equipment failures stem from improper fastener selection? When your project demands 3/4 inch flat washers or 4 inch washer
s with perfect inner diameter tolerances, settling for generic hardware could cost you $18,500+ in average repair bills. Discover how precision-engineered solutions outperform standard carriage bolts and washers.

Technical Superiority: Beyond Basic 3/8 x 4 Inch Carriage Bolts

Our 4 inch washers feature laser-etched thickness indicators and 18% thicker zinc-nickel plating than industry standards. Compare the difference:

Feature	Generic Washers	Our 4" Washers
Load Capacity	2,800 lbs	4,500 lbs
Corrosion Resistance	72hrs salt spray	240hrs salt spray

Precision Pairing: 3/4 Inch ID Washers Meet 4 Inch Surface Coverage

Our patented 3/4 inch inner diameter washers eliminate bolt-head slippage while the 4" surface distributes pressure 60% more effectively than standard models. Want proof? See how we helped:

Your Custom Solution: Mix & Match Components

Need 3/4 inch flat washers paired with 4 inch load plates? Our modular system offers 12 coating options and 6 material grades. Get exactly what your project demands.

FAQ: 4 Inch Washer Solutions

Q: Do your 3/4 inch ID washers work with 3/8 inch bolts?

A: Perfectly! Our tolerance control ensures ±0.002" precision fit.

Q: What materials do you offer for 4 inch washers?

A: Choose from stainless steel, Grade 8 carbon steel, or marine-grade brass.