Free shipping on orders overFree shipping over $250 Lower 48 states and DC. Excludes freight and oversize.

FH612-4 Medium Universal Hardener, 1 qt Can, Liquid - Martin Senour Paints

Part #: FH612-4

The Martin Senour Paints FH612-4 Medium Universal Hardener is a professional-grade liquid hardener designed for optimal performance in automotive and industrial refinishing applications. This 1-quart can provides technicians with a reliable solution for achieving durable and high-quality finishes, ensuring consistent results in a professional workshop environment.

Key Features

  • Universal Compatibility: Formulated for versatile use across various Finish 1 product lines, offering flexibility in your painting system.
  • Optimized Curing: Engineered to perform effectively within an ideal temperature range of 65°F to 85°F, promoting proper cure times and film development.
  • VOC Compliant: Specifically designed for use in 3.5 VOC Finish 1 Factory Packaged Single Stage Colors, adhering to industry standards.
  • Enhanced Durability: Contributes to a robust and long-lasting finish when integrated with compatible coatings.
  • Consistent Performance: Delivers predictable results, crucial for professional technicians seeking reliable and high-quality outcomes.

Applications

The FH612-4 Medium Universal Hardener is an essential component for professional automotive paint and body shops, as well as industrial finishing operations. It is primarily used with Finish 1 single-stage colors and other specified Finish 1 products to facilitate proper cross-linking and hardening of the paint film. This ensures a durable and protective coating on vehicle bodies, equipment, and other surfaces requiring a professional-grade finish. Its universal nature makes it suitable for a range of repair and restoration projects where consistency and quality are paramount.

We have 10881 in stock
List: $93.24 Save: $54.10

$39.14

Free shipping on orders over $250
Lower 48 states and DC. Excludes freight and oversize items.
Add to Cart:

This product was added to our catalog on Friday 12 June, 2026.

Similar Products

(image for) FC72014 Ultimate Overall Clear Coat, 1 qt, High Solids Conte
FC72014 Ultimate Overall Clear Coat, 1 qt, High Solids Conte
Martin Senour Paints FC720-4
Your Price: $45.48
List Price: $77.45
41% off
(image for) FC740-1 High Solid 2.1 VOC Super Brillante Clearcoat, 1 gal
FC740-1 High Solid 2.1 VOC Super Brillante Clearcoat, 1 gal
Martin Senour Paints FC740-1
Your Price: $130.44
List Price: $231.16
44% off
(image for) FC740-4 High Solid 2.1 VOC Super Brillante Clearcoat, 1 qt C
FC740-4 High Solid 2.1 VOC Super Brillante Clearcoat, 1 qt C
Martin Senour Paints FC740-4
Your Price: $45.48
List Price: $77.45
41% off
(image for) FC750-1 High Solid 2.1 VOC Clearcoat, 1 gal Can, Satin, 4:1
FC750-1 High Solid 2.1 VOC Clearcoat, 1 gal Can, Satin, 4:1
Martin Senour Paints FC750-1
Your Price: $163.38
List Price: $300.33
46% off
(image for) FC750-4 High Solid 2.1 VOC Clearcoat, 1 qt Can, Satin, 4:1 M
FC750-4 High Solid 2.1 VOC Clearcoat, 1 qt Can, Satin, 4:1 M
Martin Senour Paints FC750-4
Your Price: $55.74
List Price: $96.32
42% off
(image for) FH411-18 2K HS Hardener, 1/2 pt Can, Liquid
FH411-18 2K HS Hardener, 1/2 pt Can, Liquid
Martin Senour Paints FH411-18
Your Price: $20.87
List Price: $33.98
39% off
(image for) FH411-4 2K HS Hardener, 1 qt Aerosol Can, Liquid
FH411-4 2K HS Hardener, 1 qt Aerosol Can, Liquid
Martin Senour Paints FH411-4
Your Price: $57.39
List Price: $98.01
41% off
(image for) FH416-18 2-Component 2.1 VOC DTM Hardener, 1/2 pt Aerosol Ca
FH416-18 2-Component 2.1 VOC DTM Hardener, 1/2 pt Aerosol Ca
Martin Senour Paints FH416-18
Your Price: $28.27
List Price: $48.14
41% off
(image for) FH416-4 2-Component 2.1 VOC DTM Hardener, 1 qt Aerosol Can,
FH416-4 2-Component 2.1 VOC DTM Hardener, 1 qt Aerosol Can,
Martin Senour Paints FH416-4
Your Price: $85.43
List Price: $150.08
43% off
(image for) FH611-18 Fast Universal Hardener, 1/2 pt Aerosol Can, Liquid
FH611-18 Fast Universal Hardener, 1/2 pt Aerosol Can, Liquid
Martin Senour Paints FH611-18
Your Price: $20.83
List Price: $33.82
38% off
(image for) FH611-4 Fast Universal Hardener, 1 qt Can, Liquid
FH611-4 Fast Universal Hardener, 1 qt Can, Liquid
Martin Senour Paints FH611-4
Your Price: $39.14
List Price: $93.24
58% off
(image for) FH612-18 Medium Universal Hardener, 1/2 pt Aerosol Can, Liqu
FH612-18 Medium Universal Hardener, 1/2 pt Aerosol Can, Liqu
Martin Senour Paints FH612-18
Your Price: $20.83
List Price: $33.82
38% off