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Prime-Line H 3960 Casement Folding Crank Handle, 2-3/4 In. Width, Die Cast Zinc, Bronze Finish (Single Pack)

4.9 (12) Write Review
Free shipping on orders over $29.99

$6.25

$ 2 .99 $2.99

In Stock

About this item

  • Folding arm is constructed from diecast zinc metal to reduce projection distance and interference with window coverings
  • Universal fit with set screw and plastic inserts which are 11/32, 5/16, 3/8, 9/32 inches all with 12 ridges and a 3/8 inch with 11 ridges
  • Align the adapter with the set screw on the handle and pass the screw through the hole and set directly on metal spindle shaft to hold in place
  • Ensure your operator has been thoroughly cleaned and lubricated and the ridges are not worn for optimal performance, a tight fit is best
  • Note- Please compare the line art drawing and compare with the spindle you have before purchasing


This low-profile, folding crank handle is constructed of diecast and comes in a bronze-painted finish. It features a folding arm designed to avoid interference of window blinds and coverings. Besides the typical set screw, this crank handle also includes an aluminum insert allowing the handle to fit universally on a variety of drive spline diameters. When not in use, this crank handle can be folded closed to reduce the distance of its projection away from the window, and to allow window coverings to freely hang in place, and operate as designed.


Jason Karsen
2025-08-18 11:07:12
Work well. It's nice to be able to close the blinds. Not the strongest but works if everything is well oiled.
Amanda Garrett
2025-08-17 15:20:44
The handle portion of this product is fine. Just like every other folding handle casement handle design. The failure for this product is the liner sleeves that allow this to fit multiple brands or sizes are made of inexpensive plastic. Mine stripped out with the second use. The plastic isn't durable enough to handle the torque of the cranking handle. The idea is genius, but poorly executed with substandard materials. There are some designs here on Amazon with metal sleeve liners. Look for the images with line drawings...
Kiki Fieger
2025-08-01 18:12:04
I like this because it gives me more room on the ledge
Thomas F.
2025-07-25 10:04:00
simply not sturdy enough for my applicationmay work for others
tec
2025-06-27 15:51:48
Simple and easy to install but not very confident it will last long. Plastic inserts used to adapt crank shaft size are very flimsy and I fear the plastic insert will strip and the crank will be useless if any significant torque is applied.
Steve
2025-05-31 09:57:30
Our blinds always got hung up on the window cranks of our casement windows. These folding ones allow the blinds to go over the top of the cranks when they are folded. We had tried the little T type cranks, but these were hard to close and open the window. They installed easily, but needed a good twist of the screw driver to get them tight. A couple pulled off and I had to reinstall, so I either did not get them seated correctly, or did not get them tight enough. I may be buying more as we have a few more windows to go!
cloddi
2025-05-13 15:28:17
As others have said, insert is light plastic: we’ll see how it lasts… but this is the only one I have found that actually fits 9/32, so…
Matt Leuenberger
2025-04-07 11:15:12
Inserts fit tight but on the first crank it just shredded.
ｅｋｏ
2025-03-21 11:11:38
吹き抜け部分に床をつくるロフト工場をおこなったさいにオペレーターハンドルを交換することになったが5000円以上するのでこちらを購入問題なく取り付けれたので大満足
aymakt
2025-02-14 17:57:25
サイズを合わせるためのプラスチックのはめるやつが、山がすぐ潰れてしまって使えなかった。
ディオーレ
2025-01-12 15:45:39
安価で良いのですが、アームの途中で折れる仕様の為、回しにくい。折れない仕様の商品も販売して欲しい
だいず
2025-01-05 15:03:17
最初から付いていたものが折れ、窓を開けることができなかったが、これで助かった!ネジサイズもしっかり合うものも付いていておお助かり。