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SKU: WAT-K51MP-450-A2-US19

Heavy Duty Adjustable Self-Closing Gate Spring Hinges / Gate Closers - 4-1/2" Inch x 4-1/2" Inch - Butt Hinge with Weather Cap - 304 Stainless Steel - For 1-3/4" Inch Thick Doors up to 150 lbs. - 2 Pack

Finish
Closing Type

In stock, ready to ship

  • ✓ Qualifies for free shipping!
  • ✓ Easy 45 day returns
  • ✓ Typically ships in 1-2 business days

Heavy Duty Self-Closing Gate Spring Hinges offer superior speed control, adjustable power, and tension settings. These butt hinges with weather cap measure 4-1/2" x 4-1/2", have a weight capacity of 150 lbs., and are made of 304 Stainless Steel. They are available in Satin Stainless Steel and Flat Black finishes. There are mechanical or hydraulic hybrid closing types available.

Product Specifications:

  • Heavy Duty Self-Closing Gate Spring Hinges / Gate Closers
  • Size: 4-1/2" Inch x 4-1/2" Inch
  • Butt hinges with weather cap
  • Material: 304 Stainless Steel
  • Door Thickness: 1-3/4" Inch
  • Door Weight: Up to 150 lbs.
  • Post Size: 4" Inch
  • Hinge Type: Between square posts
  • Approximate Door Size: 4' feet x 6' feet
  • Door Range: ≤120°
  • Finishes Available: Satin Stainless Steel, Flat Black
  • Closing Types Available: Mechanical Only, Hydraulic Hybrid
    *Mechanical Only are fully exterior
    *Hydraulic Hybrid hinges have fluid motion and are for interior use only
  • Fixing Method: Screw-On, only spot weld AFTER speed adjustment
  • Fully adjustable closing force and speed according to environment needs
  • Numerical adjustment panel on hinge end to set up precise tension
  • Aesthetically pleasing compared to door closers -- without extrusive arms 
  • CSI Spec 08 7100 Door Hardware & 08 7808 Self-closing Hinges
  • ADA Force: Opening force no more than 5 lbs
  • ADA Closing Speed: At least 5 sec to move from 90° to 12°
  • ADA Vertical Clearance: Does not intrude into the doorway as do some overhead closers
  • Technical Drawing
  • 2 Pack
  • To learn more about Waterson Hinges, see our in depth guide here
Model Mechanical Only -M
Hydraulic Hybrid -H
Fluid Motion Hinge Type
K51MP-450-A2 M - Exterior SA.SA1
K51MP-450-B2 H - Interior DS.HA

 

Mechanical Only Features:

  • Applications: Hotel Rooms, 3Hr Fire-rated, Fully Exterior, Arch Top, Heavy Duty, Courtyard Style
  • Mechanical only mechanism supporting heavy duty and fully exterior
  • Hinge Combination: SA.SA1
  • UL certified cycle testing ensures many years of low maintenance.
  • ANSI A156.17 Grade 1 : one million cycle testing
  • ANSI A156.7 Template Hinge : 4 ½ x 4 ½

Hydraulic Hybrid Features:

  • Applications: Offices, Frameless Glass Door, French Style, Quiet area, Breezy environments
  • Include both mechanical and hydraulic mechanism supporting quiet close needs
  • Fluid motion
  • Hinge Combination: DS.HA
  • Apply for door open ≤ 120° and environment temperature > 32°F (0°C) 
  • ANSI A156.7 Template Hinge : 4 ½ x 4 ½

Installation Kits:

  • Both machined #12-24 UNC ½”L and wooden tapping #12 x 1 ¼” screws included -- eight (8) of each type per hinge. Pack contains five (5) spares as well.
  • Three steel adhesive shims for gap adjustment between door and frame as needed
  • Tension Crook: Keeps hinge open during installation
  • 5mm & 3mm hex allen wrenches

 

US Returns: Click to Start Your Return

Note: Please be sure to specify the quantity of products you are returning during the return process or your refund / credit will be incorrect.

International Returns: Email us at help@hingeoutlet.com for Return Authorization

100% Performance Guarantee:

We want you to love your hinges and hardware.  If you're not 100% satisfied with the quality or performance of your purchase, return it for a full refund within 45 days.  Depending on the Return Reason selected, the return shipping amount may be deducted from your return.

Keep it in the box:

When possible, please keep the hinges and hardware in the box which it came in.  If you have used the product, please include all of the screws and hardware that came with your purchase.

Key items to note about your return:

  • Please allow 14 business days for us to process returns.
  • All returns must come back to us in sellable condition or you will not receive a full refund.
  • Depending on the return reason you select, you may not get a refund for your shipping costs.  If you selected free shipping, the shipping fee will be deducted from your return if the product was ordered incorrectly by you.

Clearance items:

Clearance and Flash Sale items are not eligible for return. If you believe you've received a defective item, please contact customer service at help@hingeoutlet.com

Exchanges:

We do offer exchanges of your hinges and hardware if you ordered the wrong size or finish.  If you would like to exchange an item we recommend selecting store credit during the return process. Store credit is issued directly to your Hinge Outlet account upon receipt of your return.

We're here to help:

We ask that all returns be submitted in accordance with our policy, but we'll always do the right thing to help. Please connect with our Customer Service Team via email at help@hingeoutlet.com for assistance.

Start Your Return:

Your order number can be found in your confirmation email, or by logging into your Hinge Outlet account and visiting the "my account" page.

Click here to start your Hinge Outlet Return

 

Shipping Policy
All in-stock orders are shipped within 48 hours, Monday thru Friday.  Orders are shipped via US Postal Priority Mail or United Parcel Service and usually take 2-3 business days for delivery.  Overnight shipments are available.  Please contact us for pricing.

Shipping/Handling Cost Chart - US (48 Contiguous States)

Total Sale Amount:

Shipping Charge:

$.01 to $4.99

$5.50

$5.00 to $25.00 $7.75

$25.01 to $50.00

$9.25

$50.01 to $120.00 $12.25
Over $120.00 Free


Shipping/Handling Cost Chart - US (Hawaii / Alaska / Canada Only)

Total Sale Amount:

Shipping Charge:

$.01 to $50.00

$25.95

Over $50.01

$45.95

Over $500 $89.95


Shipping/Handling Cost Chart - Rest of World
We can ship internationally beyond Canada.  We will need to determine the shipping costs at the time of purchase as they vary widely.

We will not be responsible for any duties and/or brokerage fees.  Those are the customers' obligations.  We generally ship UPS but may use US International Priority Mail as an alternative.

Please contact us if you need more information or would like a quote on shipping cost.

Privacy Policy:
Hinge Outlet respects the privacy rights of our customers.  Any and all information you provide us is kept with strict confidence. We respect your privacy and will not sell or provide your personal information to anyone.

Why Purchase From Us

We are a family owned and operated business founded in 2005. Our passion is hinges and hardware. We truly enjoy helping our customers find what they are looking for and completing their projects. We take great pride in sourcing the highest quality products and offering them at the most affordable prices. The next time you need hinges, think of Hinge Outlet, Inc.

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