Pipe Fitting and Bolt Specifications

This set of vocabulary flashcards provides the specific formulas and measurement additions for bolts, pipe fittings, and outer diameter (OD) calculations based on NPS sizes as detailed in the lecture transcript.

Bolt Head Size Formula

$$1.5 \times \text{bolt size}$$

Heavy Nut Size Formula

$$\text{Head} + \frac{1}{8}\text{"}$$

LR90 Takeoff Formula

$$1.5\text{ }\cdot\text{ NPS}$$

SR90 Takeoff Formula

$$1 \times \text{NPS}$$

Tee Takeoff Formula

$$1 \times \text{NPS}$$

45^o Takeoff Formula

$$.625 \times \text{NPS}$$

Pipe OD Adjustment for NPS $2$ and $2\text{-}\frac{1}{2}$

Add $\frac{3}{8}$

Pipe OD Adjustment for NPS $3$ and $4$

Add $\frac{1}{2}$

Pipe OD Adjustment for NPS $5$

Add $\frac{9}{16}$

Pipe OD Adjustment for NPS $6$ and $8$

Add $\frac{5}{8}$

Pipe OD Adjustment for NPS $10$ and $12$

Add $\frac{3}{4}$

Pipe OD Adjustment for NPS $14$ on

Same as NPS

Bolt Specs for $2\text{"}$ NPS

Bolt Qty: $4$, Bolt Dia: $\frac{5}{8}\text{"}$, Stud Length: $3\text{-}\frac{1}{4}\text{"}$

Bolt Specs for $3\text{"}$ NPS

Bolt Qty: $4$, Bolt Dia: $\frac{5}{8}\text{"}$, Stud Length: $3\text{-}\frac{1}{2}\text{"}$

Bolt Specs for $4\text{"}$ NPS

Bolt Qty: $8$, Bolt Dia: $\frac{5}{8}\text{"}$, Stud Length: $3\text{-}\frac{1}{2}\text{"}$

Bolt Specs for $6\text{"}$ NPS

Bolt Qty: $8$, Bolt Dia: $\frac{3}{4}\text{"}$, Stud Length: $4\text{"}$

Bolt Specs for $8\text{"}$ NPS

Bolt Qty: $8$, Bolt Dia: $\frac{3}{4}\text{"}$, Stud Length: $4\text{-}\frac{1}{4}\text{"}$

Bolt Specs for $10\text{"}$ NPS

Bolt Qty: $12$, Bolt Dia: $\frac{7}{8}\text{"}$, Stud Length: $4\text{-}\frac{1}{2}\text{"}$

Bolt Specs for $12\text{"}$ NPS

Bolt Qty: $12$, Bolt Dia: $\frac{7}{8}\text{"}$, Stud Length: $4\text{-}\frac{3}{4}\text{"}$

5/8“ Bolt

Head Size = 15/16”, Heavy Nut = 1-1/16”

3/4” Bolt

Head Size = 1-1/8””, Heavy Nut = 1-1/4”

7/8” Bolt

Head Size = 1-5/16", Heavy Nut: 1-7/16"

1” Bolt

Head = 1-1/2”, Heavy Nut = 1-5/8”

2” Pipe OD

2-3/8”

2-1/2” Pipe OD

2-7/8”

3” Pipe OD

3-1/2”

4”Pipe OD

4-1/2”

5” Pipe OD

5-9/16”

6” Pipe OD

6-5/8”

8” Pipe OD

8-5/8”

10” Pipe OD

10-3/4”

12” Pipe OD

12-3/4”

2” Flange

4 Bolts

5/8” Studs

3-1/4” Long

3” Flange

4 Bolts

5/8” Studs

3-1/2” Long

4” Flange

8 Bolts

3/4” Studs

4” Long

6” Flange

8 Bolts

3/4” Studs

4” Long

8” Flange

8 Bolts

3/4” Studs

4-1/4” Longs

10” Flange

12 Bolts

7/8” Studs

4-1/2” Long

12” Flange

12 Bolts

7/8” Studs

4-3/4” Long

What size wrench should I use for a 5/8” ?

15/16”

What is the head size on my 7/8” Bolt?

1-5/16”

What is the heavy nut for a 3/4” Bolt?

1 1/4”

What is the heavy nut on a 7/8” Bolt ?

1-7/16”

What wrench do I need for 1” Bolt ?

1-1/2”

What' is the head size on a 3/4” Bolt ?

1-1/8”

Get the Hardware for a 2” flange (# of Bolts, Size and Length)

4 Bolts

5/8” Diameter

3-1/4” Length

Get everything for a 3” flange.

4 Bolts

5/8” Diameter

3-1/2” Length

What is on a 4” Flange ?

8 Bolts

5/8” Diameter

3-1/2” Length

6” Flange?

8 Bolts

3/4” Diameter

4” Length

8” Flange ?

8 Bolts

3/4” Diameter

4-1/4” Length

What do you need for a 10” Flange ?

12 Bolts

7/8” Diameter

4-1/2” Length

12” Flange what is on it ?

12 Bolts

7/8” Diameter

4-3/4” Length

What is the OD of 6” Pipe ?

6-5/8”

OD of 8” Pipe ?

8-5/8”

OD of 10” Pipe ?

10-3/4”

OD of 4” Pipe ?

4-1/2”

OD of 4” ?

4-1/2”