Bushings & Hardware

Model: S2257-2
Adapter Bushing
  • 50mm tapered steel hub
  • Accepts standard 50mm gas cylinders
  • Unfinished Steel
  • MADE IN THE U.S.A.
​Model: S633
Adapter Bushing
  • 2.25" (57mm) tall
  • Converts 50mm bases to accept 45mm gas cylinders
  • Black
  • Also available in Gray (S633-G)
​Model: S4334-1
Adapter Bushing
  • 1.875" (48mm) tall
  • Converts 50mm bases to accept 1" column
  • Not intended for seating applications
  • MADE IN THE U.S.A.
  • Black
​Model: S4006-2
Extension Tube
  • 6" between tapers
  • Adds height between base and gas cylinder
  • Works with 50mm components
  • MADE IN THE U.S.A.
  • Black
  • Available in other sizes and finishes
Model: S4451-K
Gas Cylinder Hardware Kit
  • Qty: 1 Rubber Bumper - S4595
  • Qty: 2 Black Washers - S4597
  • Qty: 1 White Bearing - S4596
  • Qty: 1 Silver Washer- S4594
  • Qty: 1 Clip - S4565
Foot Activated Cylinder Release Kit
Counter clockwise from top left:
  • Assembled kit with optional S4154 base and S4857-A6 seat plate
  • S291 - 11" foot ring
  • S290-2 - 50 mm to 17-4 adapter
  • S5296-A2 - Parts Pack: 3 stop bolts, 3 washers, 1 spring, 1 pin, 1 rubber washer
  • S5171-A - 2.25" column, 9" long with column cover
  • Column comes in multiple lengths and finishes
  • Works with most 50mm bases and gas cylinders
  • MADE IN THE U.S.A.

Levers & Handles
Model: S4789-A3
Lever w/ Plastic Handle
  • 8” (206mm) long lever
  • 8mm diameter lever
  • Includes lever (S4788-A1) and handle (S4358-1)
  • Compatible with optional gas cylinder release activation block (S4755)
  • Custom lengths available
Model: S3825-1
Plastic Handle
  • 4.1" (106mm)long
  • 2" (50mm) wide
  • Accepts 5/16" (8mm) lever
  • Black
Model: S5465
Plastic Handle
  • 3.5” (89mm) long
  • 1.6” (41mm) wide
  • Accepts 5/16” (8mm) lever
  • Black
Model: S4358-1
Plastic Handle
  • 2" (50mm)long
  • .7" (17mm) wide
  • Accepts 5/16" (8mm) lever
  • Black

Leg Caps & Spacers

Model: S5140
​Plastic Spacer
  • .25” (6.5mm) inner diameter
  • .5” (13mm) outer diameter
  • .3” (8mm) height
  • Black
  • MADE IN THE U.S.A.
Model: S4759-1
​Plastic Spacer
  • .3” (8.3mm) inner diameter
  • .7” (19mm) outer diameter
  • .4” (10mm) height
  • Black
  • MADE IN THE U.S.A.
​Model: S4627-2
Plastic Cap
  • Works with S4154, S4050, S4266, S5066, and S5067 bases
  • Snaps into place
  • Black

Hinges

Model: S2492-A3
Hinge Bracket
  • Attaches to back upright to allow vertical adjustment of chair back
  • Works with S4513-5 back upright
  • S5218-A - Stamped outer hinge
  • S4964-A1 - Inner hinge, zinc
  • S5212 - Hand wheel
  • S5213 - Bolt 
  • S4939-2 - Conical washer
  • S4940-2 - Lock washer
  • S5018 - Spring
  • Black
​Model: S4097-A1
Hinge Bracket
  • Outer hinge can be welded to back upright
  • Works with S5030-A back upright
  • S4964-A1 - Inner hinge, zinc
  • S4197 - Outer hinge, raw
  • S5018 - Spring

Lumbar

Model: S4520-1
Lumbar Support
  • 40mm stroke / extension of lumbar
  • 350mm cable
  • 35mm hand wheel
  • Also available with 380mm, 520mm, or 723mm cable length

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