How do I know what size wrench I need for my bolt?
Multiply the first number which is the bolt size in inches or millimeters, by 1.5 using a pocket calculator, if necessary. For example, for the numbers in Step 1, 1/2 x 1.5 = . 75 or 3/4, which is the wrench size needed for this standard-sized bolt.
How are bolts tightened on a flange?
Tightening sequence. The first pass, lightly tighten the first bolt then move directly across or 180 degrees for the second bolt, then move1/4 turn around the circle or 90 degrees for the third bolt and directly across for the fourth. Continue this sequence until all bolts are tightened.
What size wrench do I need?
To calculate the wrench size needed, you must first measure your bolt. Take the diameter of the bolt, and multiply by 1.5. This calculation and conversion factor is valid for either metric or standard bolt sizes. The resulting number will be the size of the wrench you need to adjust the bolt properly.
What size bolt takes 3/4 wrench?
US Bolt Head/Wrench Size
| Bolt Diameter | Head and Wrench Size | |
|---|---|---|
| Hex Bolt – Lag Bolt – Square Bolt | Heavy Hex Bolt | |
| 7/16″ | 5/8″ | – |
| 1/2″ | 3/4″ | 7/8″ |
| 9/16″ | 13/16″ | – |
Do you need washers with flange bolts?
Flanged headed nuts and bolts have been developed to eliminate the deficiencies that have been found with the use of washers. Standard washers are typically softer than the nuts and bolts that they are used with and can often plastically deform under the high compressive stress that they must sustain.
What size bolt takes a 1/2 wrench?
Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt.
| US Bolts | ||
|---|---|---|
| Bolt Diameter (in) | Head and Wrench Size (in) | |
| 1/2 | 3/4 | 7/8 |
| 9/16 | 13/16 | |
| 5/8 | 15/16 | 1 1/16 |
What size bolt takes a 1 1 2 wrench?
US Bolt Head/Wrench Size
| Bolt Diameter | Head and Wrench Size | |
|---|---|---|
| Hex Bolt – Lag Bolt – Square Bolt | Heavy Hex Bolt | |
| 1″ | 1-1/2″ | 1-5/8″ |
| 1-1/8″ | 1-11/16″ | 1-3/4″ |
| 1-1/4″ | 1-7/8″ | 2″ |
What size bolt uses 1/2 wrench?
Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt.
| US Bolts | ||
|---|---|---|
| Bolt Diameter (in) | Head and Wrench Size (in) | |
| 7/16 | 5/8 | |
| 1/2 | 3/4 | 7/8 |
| 9/16 | 13/16 |
What size bolts for 2 300 flange?
BOLTING DIMENSIONS FOR 300 LB. FLANGES
| Nom. Pipe Size | 300 Lb. Steel Flanges | |
|---|---|---|
| 2 | 5 | 8 |
| 2-1/2 | 5-7/8 | 8 |
| 3 | 6-5/8 | 8 |
| 3-1/2 | 7-1/4 | 8 |
How tight should you tighten toilet bolts?
Bolts Don’t Have to Be Extremely Tight In some cases, hand-tightening and a quarter-turn is all you need. It’s important to keep in mind that the toilet tank is not intended to take weight and strain. The tank-to-bowl bolts are merely there to ensure the rubber seal between the tank and bowl is snug and leakproof.
Do pipe flange bolts need washers?
Question: Does ANSI/ ASME B31. 3 require the use of washers when bolting metallic flanges? Reply: No. The participants are arguing of new design/ old design, taking the matter to pre-load, corrosion, interchangeability etc.