No. 85 Window Spring Bolt

The No.85 is a solid brass window spring bolt designed for installation in the wood stile of a vertically sliding sash. This type of hardware is commonly used in pairs on light weight, single hung sash in lieu of a balance system or sash lock, and is designed to be press-fit into a 3/8" diameter hole bored through the sash stile. A hole to accept the spring plunger is then bored in the window jamb to hold the sash at any desired height. The No. 85 is precision turned solid brass with a stainless steel spring.

Similar to the Stanley spring bolts shown at the bottom of the page but superior in materials and workmanship.

These bolts were also used to hold interior screens in place for outswinging casement window applications.

Housing dimensions: 1 7/8" x 3/8"

Overall length: 3 3/8"

Shown above in 4 finishes Unlacquered Brass, Oil Rubbed Bronze, Satin Nickel, and Polished Nickel. Choose desired finish from popup menus below.


No. 85Regular price: $12.05Sale price: $9.49, 10/$90.00, 100/$800.00
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No. 85 Oil-Rubbed BronzeRegular price: $15.66Sale price: $11.99, 10/$110.00, 100/$980.00
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No. 85 Nickel FinishesRegular price: $18.08Sale price: $13.99, 10/$120.00, 100/$1,134.00
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Stanley Window Spring Bolt BrassStanley Window Spring Bolt BrassUsed to hold screens or windows in place.

Housing and knob in solid brass.

Plastic center pin.

Plastic pin 5/16" diameter x 1/2" long.

Housing 3/8" diameter x 2" long.

Overall length 3-1/8".

Discontinued by Stanley.

Stanley 57-6150
Replacement for Stanley Window Spring Bolt ZincReplacement for Stanley Window Spring Bolt ZincUsed to hold screens or windows in place.

Plastic center pin.

Plastic pin 5/16" diameter x 1/2" long.

Housing 3/8" diameter x 2" long.

Overall length 3-1/8".

DISCONTINUED BY STANLEY HARDWARE. TOOLING HAS BEEN MADE FOR A REPLACEMENT. LIMITED QUANTITIES AVAILABLE NOW. UNLIMITED QUANTITIES AVAILABLE FEBRUARY 2018.

CUSTOMERS THAT NEED 1000 OR MORE SHOULD CALL FOR QUOTES. WE ARE HAVING PRODUCT AIR-FREIGHTED IN AS IT BECOMES AVAILABLE.

KILIAN K57-6090$2.99, 100/$200.00
Click to enlarge.
Socket for Window Spring BoltUsed to create a socket for a window spring bolt so the pin on the bolt doesn't bear against bare wood.

Shown below with the #85 window spring bolt.

Measures 3/4" long x 3/8" diameter. Flared end measures 1/2" diameter. Inside measures 5/16" diameter.

Can be force fitted into proper size hole. A drop of glue may be used to secure socket.

Solid Brass, Mill Finish, Unlacquered.

Spring Bolt Socket$0.89
Click to enlarge.
Click to enlarge.