Anchor Bolts
Carriage Bolts
Elevator Bolts
Eye Bolts
Hanger Bolts
Heavy Hex Bolts
Hex Bolts
Hook Bolts
J Bolts
Lag Bolts
Plow Bolts
Rod End Bolts
Stadium Seat Bolts
Tap Bolts
U Bolts
Cap Nuts
Coupling Nuts
Flange-Serrated Nuts
Hex Machine Screw Nuts
Hex Nuts
Hex Slotted Nuts
Metal & Nylon Lock Nuts
Non-Serrated Flange Nuts
Thumb Nuts
Weld Nuts
Wing Nuts
Blind Rivets
Countersunk Rivets
Semi-Tubular Rivets
Solid Rivets
Structural Rivets
Button Socket Cap Screws
Concrete Screws
Deck Screws
Flat Head Socket Cap Screws
Hex Cap Screws
Low Head Socket Cap Screws
Machine Screws
Self-Drilling Screws
Self-Tapping Screws
Sems Screws
Set Screws
Shoulder Socket Screws
Socket Cap Screws
Tapping Screws
Thread Cutting Screws
Thread Forming Screws
Threaded Rods & Studs
Thumb Screws
Wood Screws
Beveled Washers
Flange Washers
Flat Washers
Hardened Washers
Plastic Washers
Shoulder Washers
Lock Washers
Special Washers
Spring Washers
Wave Washers
Dowel Pins
Spring Pins/Roll Pins
KD Fasteners, Inc.® can supply the hardened flat washer that you need. We offer both domestic and import hardened flat washers. We also carry them in standard and metric sizes. Our off the shelf items include the following:
- USS (in this size we offer standard and extra thick)
- SAE (in this size we offer standard and extra thick)
- F436 structural flat washer
- Our off the shelf metric line comes in 200 HV and 300 HV harden steel.
- Din 125 (flat washer)
- Din 433 (small series)
We carry them in stock in plain, zinc, zinc/yellow, and hot-dipped galvanized. If you are looking for plating specifications not listed, we can plate per your needs.
Our hardened flat washer line also includes made to order specials. We can also make per your size and hardness. Our specials include both metric and standard sizes. We are able to make hardened washers to your print and the material hardness.