All Red Head aluminum adapters are hardcoat anodized per MIL-A-8625 Type III, Class 1. No dye or coloring is used. This process provides the completed part with a hardened surface that resists corrosion, abrasion, and reduces electrolysis. It also prevents excessive wear on the threads. Complies with NFPA 1963, 4.12 Corrosion Resistance.
Threads conform to the following specifications, including a blunt start first thread known as the Higbee located in line with the Higbee indicator on the lug.
- Federal Handbook H28/10
- USDA 5100-190 C Tables 1-4
- NFPA 1963 5.1 thru 5.6.4
- UL 236 8.1 thru 8.2
When making this purchase we where looking for a light weight adapter and to matching our existing hose coupling material, too lesson corrosion. This item, and others from this category, fit the need perfectly, and at a good price compared to competitors. Would recommend and would by again if needed.
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