Doorknob Swivel Spindle ~ Wide Size
Doorknob Swivel Spindle ~ Wide Size
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Vintage-style Hardware
- Traditional-style
- Made of solid steel
- 3/8" size from point to point on rod - Standard 20 TPI thread
- 5/16" (8 mm) thick square shaft in center (measured on the flats)
- Swivel-style spindle
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An old-style threaded swivel spindle rod for doorknobs that use a privacy (locking) mechanism. Made of solid steel, this spindle is sturdy & durable. This particular spindle has a size of 3/8" - 20 threads per inch (TPI), but has a little extra thicker square size (5/16"). Excellent for your reproduction doorknobs, or just a replacement for your old chewed-up spindles.
Hardwick & Sons is pleased to offer vintage-style hardware for the many people who desire to fashion their homes with charm, quality, & style. The traditional-style hardware that we showcase are true & faithful reproductions of classic hardware pieces found in the many homes from across America throughout the past century.
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Product Thickness Thread Size Overall Size Size of Spindle Square (measured on the flats) Model # Door Spindle 3/8" 20 TPI 3-1/2" Long 5/16" (8 mm)
Door Spindle 3/8" 20 TPI 4" Long 5/16" (8 mm)
BMH8778-20X For California Residents:
WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov
WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood
- Customer Reviews5.0 Based on 2 Reviews5 ★100%24 ★0%03 ★0%02 ★0%01 ★0%0Customer Photos
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Be the first to review this itemFilter Reviews:×Clear filterMore FiltersAC05/04/2025Anthony C.United States
Balwin Doorknob Swivel Spindle
Wonderful service and speedy delivery. Unfortunately I ordered the wrong size. An excellent source of parts!
3-1/2" Long SpindlePL10/22/2022Peter L.United States
Just what I needed
Item arrived quickly in good condition. Very helpful and professional service.
- Reviews
- Questions
Thank you for submitting a review!
Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Balwin Doorknob Swivel Spindle
Wonderful service and speedy delivery. Unfortunately I ordered the wrong size. An excellent source of parts!

Just what I needed
Item arrived quickly in good condition. Very helpful and professional service.