I think my partner is on the autism spectrum

My partner is 71, I've been with him for 5 years and I quickly realised he was a little different when he started having rages and tantrums. It feels like he's attacking me but doesn't apologise after he's verbally abused me, as he doesn't think he's done anything wrong. I feel like a victim of abuse, and each time it happens I feel further away from him emotionally. I don't think he knows how to deal with my emotions and is unable to support me, but instead takes everything personally. It's very hard to talk to him about this as he gets angry. I have previously asked him if he's on the scale and he said probably, but he's never been diagnosed. I know his previous partner looked into autism while she was with him. He's socially awkward, doesn't like eye contact, is always losing everything, hyper-focuses, very impatient (gets abusive standing in queues) leaves drawers open all the time, etc etc etc.