Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
www.RigRite.com        Ordering/Questions

Stand Up Spring Blocks


Stand Up Spring Blocks
Stand Up Swivel Blocks on Springs are designed to be mounted to the Deck; Most Blocks swivel 360, tilt in all directions and are supported by a heavy gauge SS spring to prevent contact with the Deck when not under load. Commonly used at the base of the Mast for turning Halyards and Reef lines, sometimes a mainsheet, and especially on the foredeck for the Foreguy.
See also: Halyard Lead Blocks, and other Blocks. 

Rig-Rite stocks a large selection of Stand Up Swivel Blocks from a variety of manufacturers, some are listed on this page. Some are listed separately by manufacturer:

Ronstan Stand Up Spring Blocks
Schaefer Stand Up Spring Blocks

For Stand Up Swivel Blocks not listed, please contact us with complete information, including Manufacturer's part number or a sketch or photo of the item(s) with dimensions.
 


Stand Up Block w/ 1 1/8" Delrin Ball-Bearing Sheave: NF 1074:
Stand Up Block w/ 1 1/8" Aluminum Ball-Bearing Sheave: NF 1074A:

Nicro-Fico Stand Up Block with Eyestrap on Spring has 1 1/8" Ball-Bearing Sheave for use with up to 5/16" line. Unit is 2 1/2" tall, Eyestrap attaches to deck with (2) 5/32" (#8) RH screws on 1 1/8" centers. Commonly used as a Furling Line lead on smaller boats.

 


Stand Up Swivel Block w/ 2" Delrin Sheave: NF 981:
Nicro-Fico Stand Up Swivel Block on Spring with 2" Delrin Sheave for use with up to 1/2" line. Unit is 5" tall, Round plastic Base Pad is 2 7/8" diameter, and attaches to deck with (4) 3/16" (#10) RH screws on 1 3/8" box centers. Unit is marked FG 981.

 


Stand Up Swivel Block w/ 2 3/8" Aluminum Sheave: NF 1139A:
Nicro-Fico Stand Up Swivel Block on Spring with 2 3/8" Aluminum Sheave for use with up to 5/8" line and wire up to 3/16". Unit is 5 1/2" tall, Diamond-shaped plastic Base Pad is (maximum) 4 1/8" long x 2 7/8" wide, and attaches to deck with (4) 1/4" RH screws on 3" x 1 3/4" centers.


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