STM Mechanical Bill of Materials

By John Alexander

Item

Part Description

Unit Price

Quantity

Total Cost

Source

1

UNC # 1-72 x 3/4" Socket Head Cap Screw Stainless Steel

$0.60

3

$1.80

Hardware Store

2

UNC # 1-72 Hex Nuts Stainless Steel

$0.40

6

$2.40

Hardware Store

3

Flat Washers Soft Steel 

$0.07

2

$0.14

Hardware Store

4

Aluminum flat stock 1/8"x1-1/2"x12"

$2.99

1

$2.99

Hardware Store

5

3/16"x 3/4" Diameter Ceramic Disk Magnet 

$0.30

1

$0.30

Hobby Store

6

3/16"x 1" Diameter Ceramic Disk Magnet 

$0.40

2

$0.80

Hobby Store

7

Brass Shim stock

$1.99

1

$1.99

Hardware Store

8

Steel Shim stock

$1.99

1

$1.99

Hardware Store

9

3/32" Plastruct PVC Tubing

$0.40

1

$0.40

Hobby Store

10

3/16" Plastruct PVC Tubing

$0.40

1

$0.40

Hobby Store

11

Super Glue (cyanoacrylate)

$1.99

1

$1.99

Hobby Store

12

5/64" ID, 3/64" wall, Silicone Rubber Tubing 

$1.99

1

$1.99

Hobby Store

13

Concrete Patio Squares 16"x16"x2"

$1.49

2

$2.98

Hardware Store

Total

$20.17