RAM® 4" Square Post Clamp Mount with 100x100mm VESA Plate – RAM Mounts

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1-800-497-7479
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RAM^® 4" Square Post Clamp Mount with 100x100mm VESA Plate
Part #: RAM-D-377U-4-E UPC: 793442931031

Product Information

Specifications
hardware included	(2) 5/16"-18 x 3" Machine Screws (2) 5/16"-18 Nylock Nuts (4) .312" x .187" Shoulder Washers
clamp range	4" max width
socket to socket length	11.41"
hole pattern	See Drawing
ball size	D Size (2.25")
weight capacity	Standard Use: 6 lbs Heavy-Duty Use: 5 lbs
materials	Marine-grade aluminum
packaging type	Poly Bag
Weight	4.1 lb

RAM<sup>®</sup> 4" Square Post Clamp Mount with 100x100mm VESA Plate

Questions about our products? Email us for support.

RAM^® 4" Square Post Clamp Mount with 100x100mm VESA Plate

Part#: RAM-D-377U-4-E

UPC: 793442931031

Size Guide

Ball Size
Arm Sizes

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size

A Size

Holds .5 lbs.

Trail Cameras

B Size

B Size

Holds 2 lbs.

Phones, Action Cameras, Light Duty Tablets

C Size

C Size

Holds 4 lbs.

Fishfinders, Heavy Duty Tablets

D Size

D Size

Holds 6 lbs.

Heavy Monitors

E Size

E Size

Holds 15 lbs.

Heavy Monitors

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.

Size	A Size	B Size	C Size	D Size	E Size
Short Arm	Overall Length N/A	Overall Length 2.42"	Overall Length 3.56"	Overall Length 5.69"	Overall Length 5.69"
Short Arm	Socket-to-Socket Length N/A	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 2.5"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 4.66"
Medium Arm	Overall Length 2.42"	Overall Length 3.73"	Overall Length 5.69"	Overall Length 8.44"	Overall Length 12.63"
Medium Arm	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 3"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 6.88"	Socket-to-Socket Length 9.88"
Long Arm	Overall Length 6"	Overall Length 6"	Overall Length 9.13"	Overall Length 12.98"	Overall Length N/A
Long Arm	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 8"	Socket-to-Socket Length 11.41"	Socket-to-Socket Length N/A

Size Guide

Ball Size
Arm Sizes

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size

A Size

Holds .5 lbs.

Trail Cameras

B Size

B Size

Holds 2 lbs.

Phones, Action Cameras, Light Duty Tablets

C Size

C Size

Holds 4 lbs.

Fishfinders, Heavy Duty Tablets

D Size

D Size

Holds 6 lbs.

Heavy Monitors

E Size

E Size

Holds 15 lbs.

Heavy Monitors

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.

Size	A Size	B Size	C Size	D Size	E Size
Short Arm	Overall Length N/A	Overall Length 2.42"	Overall Length 3.56"	Overall Length 5.69"	Overall Length 5.69"
Short Arm	Socket-to-Socket Length N/A	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 2.5"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 4.66"
Medium Arm	Overall Length 2.42"	Overall Length 3.73"	Overall Length 5.69"	Overall Length 8.44"	Overall Length 12.63"
Medium Arm	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 3"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 6.88"	Socket-to-Socket Length 9.88"
Long Arm	Overall Length 6"	Overall Length 6"	Overall Length 9.13"	Overall Length 12.98"	Overall Length N/A
Long Arm	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 8"	Socket-to-Socket Length 11.41"	Socket-to-Socket Length N/A

Size Guide

Ball Size
Arm Sizes

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size

A Size

Holds .5 lbs.

Trail Cameras

B Size

B Size

Holds 2 lbs.

Phones, Action Cameras, Light Duty Tablets

C Size

C Size

Holds 4 lbs.

Fishfinders, Heavy Duty Tablets

D Size

D Size

Holds 6 lbs.

Heavy Monitors

E Size

E Size

Holds 15 lbs.

Heavy Monitors

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.

Size	A Size	B Size	C Size	D Size	E Size
Short Arm	Overall Length N/A	Overall Length 2.42"	Overall Length 3.56"	Overall Length 5.69"	Overall Length 5.69"
Short Arm	Socket-to-Socket Length N/A	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 2.5"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 4.66"
Medium Arm	Overall Length 2.42"	Overall Length 3.73"	Overall Length 5.69"	Overall Length 8.44"	Overall Length 12.63"
Medium Arm	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 3"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 6.88"	Socket-to-Socket Length 9.88"
Long Arm	Overall Length 6"	Overall Length 6"	Overall Length 9.13"	Overall Length 12.98"	Overall Length N/A
Long Arm	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 8"	Socket-to-Socket Length 11.41"	Socket-to-Socket Length N/A

$230.49

Size Guide

Ball Size
Arm Sizes

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size

A Size

Holds .5 lbs.

Trail Cameras

B Size

B Size

Holds 2 lbs.

Phones, Action Cameras, Light Duty Tablets

C Size

C Size

Holds 4 lbs.

Fishfinders, Heavy Duty Tablets

D Size

D Size

Holds 6 lbs.

Heavy Monitors

E Size

E Size

Holds 15 lbs.

Heavy Monitors

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.

Size	A Size	B Size	C Size	D Size	E Size
Short Arm	Overall Length N/A	Overall Length 2.42"	Overall Length 3.56"	Overall Length 5.69"	Overall Length 5.69"
Short Arm	Socket-to-Socket Length N/A	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 2.5"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 4.66"
Medium Arm	Overall Length 2.42"	Overall Length 3.73"	Overall Length 5.69"	Overall Length 8.44"	Overall Length 12.63"
Medium Arm	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 3"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 6.88"	Socket-to-Socket Length 9.88"
Long Arm	Overall Length 6"	Overall Length 6"	Overall Length 9.13"	Overall Length 12.98"	Overall Length N/A
Long Arm	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 8"	Socket-to-Socket Length 11.41"	Socket-to-Socket Length N/A

Size Guide

Ball Size
Arm Sizes

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size

A Size

Holds .5 lbs.

Trail Cameras

B Size

B Size

Holds 2 lbs.

Phones, Action Cameras, Light Duty Tablets

C Size

C Size

Holds 4 lbs.

Fishfinders, Heavy Duty Tablets

D Size

D Size

Holds 6 lbs.

Heavy Monitors

E Size

E Size

Holds 15 lbs.

Heavy Monitors

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.

Size	A Size	B Size	C Size	D Size	E Size
Short Arm	Overall Length N/A	Overall Length 2.42"	Overall Length 3.56"	Overall Length 5.69"	Overall Length 5.69"
Short Arm	Socket-to-Socket Length N/A	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 2.5"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 4.66"
Medium Arm	Overall Length 2.42"	Overall Length 3.73"	Overall Length 5.69"	Overall Length 8.44"	Overall Length 12.63"
Medium Arm	Socket-to-Socket Length 1.75"	Socket-to-Socket Length 3"	Socket-to-Socket Length 4.66"	Socket-to-Socket Length 6.88"	Socket-to-Socket Length 9.88"
Long Arm	Overall Length 6"	Overall Length 6"	Overall Length 9.13"	Overall Length 12.98"	Overall Length N/A
Long Arm	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 5.31"	Socket-to-Socket Length 8"	Socket-to-Socket Length 11.41"	Socket-to-Socket Length N/A

hardware included:

(2) 5/16"-18 x 3" Machine Screws
(2) 5/16"-18 Nylock Nuts
(4) .312" x .187" Shoulder Washers

clamp range:

4" max width

socket to socket length:

11.41"

hole pattern:

See Drawing

ball size:

D Size (2.25")

weight capacity:

Standard Use: 6 lbs
Heavy-Duty Use: 5 lbs

materials:

Marine-grade aluminum

packaging type:

Poly Bag

Weight:

4.1 lb

Print

Instructions

Square Post Clamp Base Assembly Guide

Documents

Drawing File - 100 x 100mm VESA Plate

Questions & Answers

Have a Question?

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Add-on & Accessories

RAM^® Accessories for D Size Knobs

RAM-KNOB9HU:RAM-KNOB9HU_1:RAM Hi-Torq<sup>™</sup> Wrench for D Size Socket Arms

RAM-KNOB9HU:RAM-KNOB9HU_1:RAM Hi-Torq<sup>™</sup> Wrench for D Size Socket Arms

RAM^® Hi-Torq^™ Wrench for D Size Socket Arms RAM-KNOB9HU $30.99

RAP-S-NUT5U:RAP-S-NUT5U_1:RAM Pin-Lock<sup>™</sup> Security Nut for D & E Size Socket Arms

RAP-S-NUT5U:RAP-S-NUT5U_1:RAM Pin-Lock<sup>™</sup> Security Nut for D & E Size Socket Arms

RAM^® Pin-Lock^™ Security Nut for D & E Size Socket Arms RAP-S-NUT5U $9.99