What is the measurement from center to center of the two strike holes?

5 3/8" however, the strike holes are oversized (1 3/4") so there is quite a bit of leeway

How thick is the plate?

Upon measuring, it appears to be 1/8 of an inch thick. It feels solid.

recommended screws? I'd like to use some quality screws but have no idea what to look for, brand, size, etc

Comes with some very well impressive screws so no need to worry. You are in good hands with this baby. I tried as best I could to kick it in and was rewarded with boot marks and a trip to HD to get a solid wood door. Any unwelcomed intruder would need a some serious tools to get in. Make sure your locks are unpickable too. Check this outFlip Guard Satin Nickel https://www.amazon.com/dp/B00HZD8S8G/ref=cm_sw_r_em_apa_a1KOzbA6T37Y1

Will this work on a interior door frame which is not 1 3/4"?

No too wide..will work on 1 3/4 but not on 1 3/8. Not unless you trim the door stop

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🛡️ Lock in security, unlock peace of mind.

PRECISION FIT - Designed for 5-1/2” to 6” hole spacing, ensuring seamless compatibility with modern door hardware.
HEAVY DUTY HOLD - Includes six 3-inch screws engineered to resist kick-ins and reinforce your door frame.
EFFORTLESS UPGRADE - Quick installation with surface mount design—minimal mortising needed for a flush, professional finish.
TIMELESS DURABILITY - Crafted from stamped alloy steel with a satin nickel finish that blends style with long-lasting strength.
FORTIFIED SECURITY SETUP - Replace separate latch & deadbolt strikes with a sleek one-piece combo plate for ultimate protection.

The PRIME-LINE Defender Security U 10385 is a satin nickel, one-piece door strike plate designed for dead latch and deadbolt systems with 5-1/2” to 6” hole spacing. Featuring six 3-inch screws for enhanced kick-in resistance and durable stamped alloy steel construction, it offers a secure, stylish, and easy-to-install upgrade for modern door hardware.

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Manufacturer	Prime-Line Products
Part number	U 10385
Item Weight	240 g
Product Dimensions	27.94 x 4.13 x 27.94 cm; 240 g
Item model number	U 10385
Size	1 Pack
Color	Satin Nickel
Style	Modern
Finish	Satin Nickel
Material	Alloy Steel
Item Package Quantity	1
Number Of Pieces	1
Plug Profile	Surface Mount
Special Features	Anti theft
Included components	Door stroke and keepers
Batteries Included?	No
Batteries Required?	No

PRIME-LINE Defender Security U 10385, Satin Nickel Door Strike, for Use with 5-1/2” and 6” Hole Spacing On Dead Latch and Deadbolt, Steel, single pack

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