APS - Springs and Standup Boots
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Harken Springs and Boots

Harken Springs and Boots

Springs are used to support blocks on padeyes, eyestraps, bases and traveler cars. Keeps blocks from hitting the deck. Use the HSB2 Spring Cup with the H071 Stand-Up Spring to keep the spring in place on a block. The HSB2 has a hole for the block post. Sold separately.

The H077 DN Adaptor uses an H071 spring and the base has a 1/4" (6mm) Base Pin that spans a 1/2" (12mm) gap The block pin, for replacing the shackle on the block, is 3/16" (5mm) and spans a gap of 9/32" (7mm). Stand-Up Boots are made of durable, flexible PVC and hold blocks up without snagging lines.

Part # Description Weight Height Diameter Suits
oz g in mm in mm
H097 Stand-Up Spring, Small 0.13 3.7 1 25 3/4 19
H071 Stand-Up Spring 0.32 9.1 2 51 7/8 22
H1603 Stand-Up Spring, Midrange 0.74 21 2 1/2 64 1 3/8 35
H077 DN Adaptor (Spring w/ Swivel Mount) 2.40 69 - - - -
H369 Stand-Up Boot, Small 0.45 12.7 2 51 1 9/16 40 40 and 47mm Carbo & Black Magic
H370 Stand-Up Boot, Large 1.10 30.8 2 5/8 67 2 3/16 55 75mm Carbo
HSB2 Spring Cup for H071 Spring - - 1/8 3 1 1/4 33 H071


H071 Stand Up-Spring Price: $1.01 H077 DN Adapter (Spring w/ Swivel Mount) Price: $47.04
H097 Small Stand-Up Spring, Small Price: $0.77 H1603 MR Stand-Up Spring Price: $2.90
H369 Stand-Up Boot, Medium, Black PVC Price: $10.34 H370 Stand-Up Boot, Large, Black PVC Price: $12.41
HSB2 Spring Cup for H071 Spring Price: $1.00


Selden Standup Springs

Selden Standup Springs

Stand Up Springs can support deck mounted blocks. Different springs correspond with different types of blocks.

Part # Dimension Weight Combine With
oz g
SLD308074R Ø36.5x70 0.67 19 Plain Bearing Block 50
SLD308085R Ø50x85 1.72 49 Plain Bearing Block 60/70, Roller Bearing Block 60
SLD308093R Ø60x100 2.68 76 Plain Bearing Block 80
SLD308095R Ø72x145 5.39 153 Plain Bearing Block 100
SLD403123R Ø20/16-25 0.07 2 Ball Bearing Block 20/30
SLD433411R Ø30/20-40 0.07 2 Ball Bearing Block 40


SLD308074R Stand Up Spring for PBB 50 Price: $7.00 SLD308085R Stand Up Spring for PBB 60, PBB 70 & RBB 60 Price: $9.00
SLD308093R Stand Up Spring for PBB 80 Price: $13.00 SLD403123R Stand Up Spring for BBB 20 & BBB 30 Price: $2.00
SLD433411R Stand Up Spring Price: $4.00


Ronstan Springs

Ronstan Springs

Springs are used to support blocks on padeyes, eyestraps, bases, and traveler cars. Springs keep blocks from hitting the deck. Stand up bases and springs for various Ronstan block ranges. Made of Grade 316 stainless steel. The RF2455 Stand up Base features a clatter free rubber boot which you can attach the Dyneema link so that the block is aligned with or across the base. It's a neat, low profile solution.

Part # Description Dimensions (A) Dimensions (B) Dimensions (C) Dimensions (D) Weight Suits
in mm in mm in mm in mm oz g
RF318 Tapered Stand-Up Spring, Small - - 21/32 16.5 7/8 22 3/64 1.2 0.1 3 Series 20
RF319 Stand-Up Spring, Small - - 1-1/4 32 25/32 20 5/64 2 0.1 3 Smart Ratchets
RF321 Tapered Stand-Up Spring, Medium - - 1-9/16 40 1-1/8 28 5/64 2 0.3 9 Series 20
RF324 Stand-Up Spring 17/32 45.3 2-3/8 60 3-3/16 81 1/8 3.5 2.8 80 Series 60, 70 and 100
RF2455 Stand Up Base Max Working Load 1,100 lbs (550kg) and Breaking Load of 2,200 lbs (1,000kg) 0.9 26 Series 55 BB and RT


RF318 Tapered Stand-Up Spring, Small Price: $2.08 RF319 Stand-Up Spring, Small Price: $2.93
RF321 Tapered Stand-Up Spring, Medium Price: $3.78


RWO Standup Boots

RWO Standup Boots

Great for use in place of stainless steel coil springs to better shed lines, prevent snags and keep blocks from hitting the deck. Made of flexible, gray PVC.

Part # Description Height Diameter Suits
in mm in mm
R1814 Stand-Up Boot, Small 1 3/4 45 1 1/2 38 Bullet Sized Blocks
R1815 Stand-Up Boot, Medium 2 1/2 63 2 1/4 57 Big Bullet Blocks Through 3 inch Blocks


R1814 Stand-Up Boot, Small, Gray PVC Price: $12.13 R1815 Stand-Up Boot, Large, Gray PVC Price: $15.44

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