Shop With Confidence - 30 Day Easy Returns - No Need To Call
 
Follow us on facebook
 

AN4 Airframe Bolt, 1/4-28 Thread

Click for a larger picture of AN4  Airframe Bolt, 1/4-28 Thread
View Catalog Page in PDF format

AN4 bolts have a 1/4-28 UNF thread. All sizes of AN4 bolts have a 0.469 inch thread length (except AN4-3A, which has 0.406 inch thread length). The thread length is designed specifically to fit a full-height nut plus one AN960-416 washer.

Grip Length refers to the length of the unthreaded portion of the shank. Grip lengths are available in 1/8" increments to match the thickness of the materials being bolted together (the threaded portion should never be positioned inside the hole). If your assembly is between sizes, select the next longer bolt and use additional AN960-416 and AN960-416L washers to take up the slack.

A or no A? AN bolts were originally designed to be used with a castle nut and cotter pin, so the base part number indicates a drilled shank. The addition of an "A" at the end (for example, AN4-13A) indicates an undrilled shank for use with a self-locking nut.

UHL: Under Head Length (also known as Full Shank Length or Overall Length not including bolt head)

AN bolt nomenclature can be confusing. Please take a look at our page on Identifying AN Bolt Sizes.

Enter desired order quantities below, then click the "Add selected quantities to cart" button.

Order Qty
Part No.
Desc.
Price
Status

AN4-3

1/4-28 x 0.063 Grip Airframe Bolt, 0.47 UHL, Drilled Shank

1 to 11: $0.64

12 to 149: $0.57

150 to 1999: $0.49

2000 & up: call   

In Stock

AN4-3A

1/4-28 x 0.063 Grip Airframe Bolt, 0.47 UHL, undrilled

1 to 11: $0.25

12 to 149: $0.22

150 & up: $0.19

In Stock

AN4-4

1/4-28 x 0.063 Grip Airframe Bolt, 0.53 UHL, Drilled Shank

1 to 11: $0.34

12 to 149: $0.32

150 & up: $0.29

In Stock

AN4-4A

1/4-28 x 0.063 Grip Airframe Bolt, 0.53 UHL, undrilled

1 to 11: $0.25

12 & up: $0.22

In Stock

AN4-5

1/4-28 x 0.188 Grip Airframe Bolt, 0.66 UHL, Drilled Shank

1 to 11: $0.34

12 & up: $0.30

In Stock

AN4-5A

1/4-28 x 0.188 Grip Airframe Bolt, 0.66 UHL, undrilled

1 to 11: $0.31

12 to 149: $0.27

150 to 1999: $0.23

2000 & up: call   

In Stock

AN4-6

1/4-28 x 0.313 Grip Airframe Bolt, 0.78 UHL, Drilled Shank

1 to 11: $0.79

12 & up: $0.71

In Stock

AN4-6A

1/4-28 x 0.313 Grip Airframe Bolt, 0.78 UHL, undrilled

1 to 11: $0.39

12 to 149: $0.35

150 to 1999: $0.30

2000 & up: call   

In Stock

AN4-7

1/4-28 x 0.438 Grip Airframe Bolt, 0.91 UHL, Drilled Shank

$0.35In Stock

AN4-7A

1/4-28 x 0.438 Grip Airframe Bolt, 0.91 UHL, undrilled

1 to 11: $0.39

12 to 149: $0.35

150 to 1999: $0.30

2000 & up: call   

In Stock

AN4-10

1/4-28 x 0.563 Grip Airframe Bolt, 1.03 UHL, Drilled Shank

1 to 11: $0.49

12 & up: $0.47

In Stock

AN4-10A

1/4-28 x 0.563 Grip Airframe Bolt, 1.03 UHL, undrilled

1 to 11: $0.39

12 to 149: $0.35

150 to 1999: $0.30

2000 & up: call   

In Stock

AN4-11

1/4-28 x 0.688 Grip Airframe Bolt, 1.16 UHL, Drilled Shank

1 to 11: $0.39

12 to 149: $0.38

150 to 1999: $0.37

2000 & up: call   

In Stock

AN4-11A

1/4-28 x 0.688 Grip Airframe Bolt, 1.16 UHL, undrilled

1 to 11: $0.39

12 to 149: $0.35

150 to 1999: $0.30

2000 & up: call   

In Stock

AN4-12

1/4-28 x 0.813 Grip Airframe Bolt, 1.28 UHL, Drilled Shank

1 to 11: $0.69

12 & up: $0.62

In Stock

AN4-12A

1/4-28 x 0.813 Grip Airframe Bolt, 1.28 UHL, undrilled

1 to 11: $0.39

12 to 149: $0.35

150 to 1999: $0.30

2000 & up: call   

In Stock

AN4-13

1/4-28 x 0.938 Grip Airframe Bolt, 1.41 UHL, Drilled Shank

1 to 11: $0.79

12 & up: $0.72

In Stock

AN4-13A

1/4-28 x 0.938 Grip Airframe Bolt, 1.41 UHL, undrilled

1 to 11: $0.59

12 to 149: $0.52

150 to 1999: $0.45

2000 & up: call   

In Stock

AN4-14

1/4-28 x 1.063 Grip Airframe Bolt, 1.53 UHL, Drilled Shank

1 to 11: $0.48

12 to 149: $0.46

150 to 1999: $0.43

2000 & up: call   

In Stock

AN4-14A

1/4-28 x 1.063 Grip Airframe Bolt, 1.53 UHL, undrilled

1 to 11: $0.59

12 to 149: $0.52

150 & up: $0.45

In Stock

AN4-15

1/4-28 x 1.188 Grip Airframe Bolt, 1.66 UHL, Drilled Shank

1 to 11: $0.79

12 & up: $0.71

In Stock

AN4-15A

1/4-28 x 1.188 Grip Airframe Bolt, 1.66 UHL, undrilled

1 to 11: $0.79

12 to 149: $0.70

150 & up: $0.60

In Stock

AN4-16

1/4-28 x 1.313 Grip Airframe Bolt, 1.78 UHL, Drilled Shank

1 to 11: $0.69

12 & up: $0.61

In Stock

AN4-16A

1/4-28 x 1.313 Grip Airframe Bolt, 1.78 UHL, undrilled

1 to 11: $0.54

12 to 149: $0.48

150 to 1999: $0.41

2000 & up: call   

In Stock

AN4-17

1/4-28 x 1.438 Grip Airframe Bolt, 1.91 UHL, Drilled Shank

1 to 11: $0.99

12 & up: $0.88

In Stock

AN4-17A

1/4-28 x 1.438 Grip Airframe Bolt, 1.91 UHL, undrilled

1 to 11: $0.54

12 to 149: $0.48

150 & up: $0.41

In Stock

AN4-20

1/4-28 x 1.563 Grip Airframe Bolt, 2.03 UHL, Drilled Shank

1 to 11: $0.64

12 to 149: $0.57

150 & up: $0.49

In Stock

AN4-20A

1/4-28 x 1.563 Grip Airframe Bolt, 2.03 UHL, undrilled

1 to 11: $0.59

12 to 149: $0.52

150 to 1999: $0.45

2000 & up: call   

In Stock

AN4-21

1/4-28 x 1.688 Grip Airframe Bolt, 2.16 UHL, Drilled Shank

1 to 11: $0.94

12 to 149: $0.83

150 to 1999: $0.72

2000 & up: call   

In Stock

AN4-21A

1/4-28 x 1.688 Grip Airframe Bolt, 2.16 UHL, undrilled

1 to 11: $0.54

12 to 149: $0.48

150 to 1999: $0.41

2000 & up: call   

In Stock

AN4-22

1/4-28 x 1.813 Grip Airframe Bolt, 2.28 UHL, Drilled Shank

1 to 11: $0.64

12 to 149: $0.57

150 & up: $0.49

In Stock

AN4-22A

1/4-28 x 1.813 Grip Airframe Bolt, 2.28 UHL, undrilled

1 to 11: $0.64

12 & up: $0.57

In Stock

AN4-23

1/4-28 x 1.938 Grip Airframe Bolt, 2.41 UHL, Drilled Shank

1 to 11: $0.64

12 & up: $0.57

In Stock

AN4-23A

1/4-28 x 1.938 Grip Airframe Bolt, 2.41 UHL, undrilled

1 to 11: $0.54

12 to 149: $0.48

150 to 1999: $0.41

2000 & up: call   

In Stock

AN4-24

1/4-28 x 2.063 Grip Airframe Bolt, 2.53 UHL, Drilled Shank

1 to 9: $1.09

10 to 99: $0.97

100 to 999: $0.84

1000 & up: call   

In Stock

AN4-24A

1/4-28 x 2.063 Grip Airframe Bolt, 2.53 UHL, undrilled

1 to 11: $0.59

12 & up: $0.52

In Stock

AN4-25

1/4-28 x 2.188 Grip Airframe Bolt, 2.66 UHL, Drilled Shank

1 to 11: $0.64

12 & up: $0.58

In Stock

AN4-25A

1/4-28 x 2.188 Grip Airframe Bolt, 2.66 UHL, undrilled

1 to 11: $0.59

12 to 149: $0.52

150 & up: $0.45

In Stock

AN4-26

1/4-28 x 2.313 Grip Airframe Bolt, 2.78 UHL, Drilled Shank

1 to 11: $0.99

12 & up: $0.88

In Stock

AN4-26A

1/4-28 x 2.313 Grip Airframe Bolt, 2.78 UHL, undrilled

1 to 11: $0.64

12 to 149: $0.58

150 & up: $0.51

In Stock

AN4-27

1/4-28 x 2.438 Grip Airframe Bolt, 2.91 UHL, Drilled Shank

1 to 11: $0.89

12 to 149: $0.79

150 & up: $0.68

In Stock

AN4-27A

1/4-28 x 2.438 Grip Airframe Bolt, 2.91 UHL, undrilled

1 to 11: $0.79

12 & up: $0.70

In Stock

AN4-30

1/4-28 x 2.563 Grip Airframe Bolt, 3.03 UHL, Drilled Shank

1 to 11: $0.89

12 to 149: $0.79

150 & up: $0.68

In Stock

AN4-30A

1/4-28 x 2.563 Grip Airframe Bolt, 3.03 UHL, undrilled

1 to 11: $0.79

12 & up: $0.70

In Stock

AN4-31

1/4-28 x 2.688 Grip Airframe Bolt, 3.16 UHL, Drilled Shank

1 to 9: $1.19

10 to 99: $1.06

100 to 999: $0.92

1000 & up: call   

In Stock

AN4-31A

1/4-28 x 2.688 Grip Airframe Bolt, 3.16 UHL, undrilled

1 to 11: $0.79

12 to 149: $0.70

150 & up: $0.60

In Stock

AN4-32

1/4-28 x 2.813 Grip Airframe Bolt, 3.28 UHL, Drilled Shank

1 to 9: $1.29

10 to 99: $1.15

100 to 999: $1.00

1000 & up: call   

In Stock

AN4-32A

1/4-28 x 2.813 Grip Airframe Bolt, 3.28 UHL, undrilled

1 to 11: $0.99

12 & up: $0.88

In Stock

AN4-33

1/4-28 x 2.938 Grip Airframe Bolt, 3.41 UHL, Drilled Shank

1 to 9: $1.29

10 to 99: $1.15

100 to 999: $1.00

1000 & up: call   

In Stock

AN4-33A

1/4-28 x 2.938 Grip Airframe Bolt, 3.41 UHL, undrilled

1 to 9: $1.19

10 & up: $1.06

In Stock

AN4-34

1/4-28 x 3.063 Grip Airframe Bolt, 3.53 UHL, Drilled Shank

1 to 9: $1.89

10 & up: $1.68

In Stock

AN4-34A

1/4-28 x 3.063 Grip Airframe Bolt, 3.53 UHL, undrilled

1 to 9: $1.39

10 & up: $1.24

In Stock

AN4-35

1/4-28 x 3.188 Grip Airframe Bolt, 3.66 UHL, Drilled Shank

1 to 9: $1.89

10 & up: $1.68

In Stock

AN4-35A

1/4-28 x 3.188 Grip Airframe Bolt, 3.66 UHL, undrilled

1 to 9: $1.39

10 & up: $1.24

In Stock

AN4-36

1/4-28 x 3.313 Grip Airframe Bolt, 3.78 UHL, Drilled Shank

1 to 9: $1.39

10 to 99: $1.24

100 & up: $1.08

In Stock

AN4-36A

1/4-28 x 3.313 Grip Airframe Bolt, 3.78 UHL, undrilled

1 to 9: $1.59

10 & up: $1.41

In Stock

AN4-37

1/4-28 x 3.438 Grip Airframe Bolt, 3.91 UHL, Drilled Shank

1 to 9: $1.39

10 to 99: $1.24

100 & up: $1.08

In Stock

AN4-37A

1/4-28 x 3.438 Grip Airframe Bolt, 3.91 UHL, undrilled

1 to 9: $1.59

10 & up: $1.41

In Stock

AN4-40

1/4-28 x 3.563 Grip Airframe Bolt, 4.03 UHL, Drilled Shank

1 to 9: $2.19

10 & up: $1.95

In Stock

AN4-40A

1/4-28 x 3.563 Grip Airframe Bolt, 4.03 UHL, undrilled

1 to 9: $1.59

10 & up: $1.45

In Stock

AN4-41

1/4-28 x 3.688 Grip Airframe Bolt, 4.16 UHL, Drilled Shank

1 to 9: $2.29

10 & up: $2.04

In Stock

AN4-41A

1/4-28 x 3.688 Grip Airframe Bolt, 4.16 UHL, undrilled

1 to 9: $1.59

10 & up: $1.41

In Stock

AN4-42

1/4-28 x 3.813 Grip Airframe Bolt, 4.28 UHL, Drilled Shank

1 to 9: $2.29

10 & up: $2.04

In Stock

AN4-42A

1/4-28 x 3.813 Grip Airframe Bolt, 4.28 UHL, undrilled

1 to 9: $1.79

10 & up: $1.59

In Stock

AN4-43

1/4-28 x 3.938 Grip Airframe Bolt, 4.41 UHL, Drilled Shank

1 to 9: $1.59

10 to 99: $1.41

100 & up: $1.23

In Stock

AN4-43A

1/4-28 x 3.938 Grip Airframe Bolt, 4.41 UHL, undrilled

1 to 9: $1.89

10 & up: $1.68

In Stock

AN4-44

1/4-28 x 4.063 Grip Airframe Bolt, 4.53 UHL, Drilled Shank

1 to 9: $1.69

10 to 99: $1.50

100 & up: $1.31

In Stock

AN4-44A

1/4-28 x 4.063 Grip Airframe Bolt, 4.53 UHL, undrilled

1 to 9: $1.29

10 to 99: $1.15

100 & up: $1.00

In Stock

AN4-45

1/4-28 x 4.188 Grip Airframe Bolt, 4.66 UHL, Drilled Shank

1 to 9: $1.79

10 to 99: $1.59

100 & up: $1.39

In Stock

AN4-45A

1/4-28 x 4.188 Grip Airframe Bolt, 4.66 UHL, undrilled

1 to 9: $1.89

10 & up: $1.68

In Stock

AN4-46

1/4-28 x 4.313 Grip Airframe Bolt, 4.78 UHL, Drilled Shank

1 to 9: $1.79

10 to 99: $1.59

100 & up: $1.39

In Stock

AN4-46A

1/4-28 x 4.313 Grip Airframe Bolt, 4.78 UHL, undrilled

1 to 9: $1.89

10 & up: $1.68

In Stock
Call for Quote

AN4-47

1/4-28 x 4.438 Grip Airframe Bolt, 4.91 UHL, Drilled Shank

Call for QuoteNot In Stock
notify me when available

AN4-47A

1/4-28 x 4.438 Grip Airframe Bolt, 4.91 UHL, undrilled

1 to 9: $2.29

10 to 99: $2.04

100 & up: $1.79

In Stock
Call for Quote

AN4-50

1/4-28 x 4.563 Grip Airframe Bolt, 5.03 UHL, Drilled Shank

Call for QuoteNot In Stock
notify me when available

AN4-50A

1/4-28 x 4.563 Grip Airframe Bolt, 5.03 UHL, undrilled

1 to 7: $3.69

8 to 59: $3.31

60 & up: $2.92

In Stock

AN4-51A

1/4-28 x 4.688 Grip Airframe Bolt, 5.16 UHL, undrilled

1 to 9: $2.29

10 to 99: $2.04

100 & up: $1.79

In Stock

AN4-52A

1/4-28 x 4.813 Grip Airframe Bolt, 5.28 UHL, undrilled

1 to 9: $2.99

10 & up: $2.67

In Stock

AN4-53A

1/4-28 x 4.938 Grip Airframe Bolt, 5.41 UHL, undrilled

1 to 7: $3.49

8 to 59: $3.13

60 & up: $2.76

In Stock

AN4-54A

1/4-28 x 5.063 Grip Airframe Bolt, 5.53 UHL, undrilled

1 to 7: $3.99

8 to 59: $3.58

60 & up: $3.16

In Stock

AN4-55A

1/4-28 x 5.188 Grip Airframe Bolt, 5.66 UHL, undrilled

1 to 7: $4.49

8 to 59: $4.03

60 & up: $3.57

In Stock

AN4-56A

1/4-28 x 5.313 Grip Airframe Bolt, 5.78 UHL, undrilled

1 to 7: $4.99

8 to 59: $4.48

60 & up: $3.97

In Stock

AN4-57A

1/4-28 x 5.438 Grip Airframe Bolt, 5.91 UHL, undrilled

1 to 7: $5.49

8 to 59: $4.94

60 & up: $4.38

In Stock

AN4-61A

1/4-28 x 5.688 Grip Airframe Bolt, 6.16 UHL, undrilled

1 to 7: $5.99

8 & up: $5.39

In Stock

AN4-62A

1/4-28 x 5.813 Grip Airframe Bolt, 6.28 UHL, undrilled

1 to 7: $6.49

8 & up: $5.85

In Stock

AN4-64A

1/4-28 x 6.063 Grip Airframe Bolt, 6.53 UHL, undrilled

1 to 7: $5.99

8 & up: $5.39

In Stock

AN4-65A

1/4-28 x 6.188 Grip Airframe Bolt, 6.66 UHL, undrilled

1 to 7: $6.49

8 & up: $5.85

In Stock

AN4-67A

1/4-28 x 6.438 Grip Airframe Bolt, 6.91 UHL, undrilled

1 to 7: $7.49

8 & up: $6.76

In Stock

AN4-70A

1/4-28 x 6.563 Grip Airframe Bolt, 7.03 UHL, undrilled

1 to 7: $8.49

8 & up: $7.67

In Stock

AN4-72A

1/4-28 x 6.813 Grip Airframe Bolt, 7.28 UHL, undrilled

1 to 5: $10.49

6 to 35: $9.49

36 & up: $8.49

In Stock

AN4-73A

1/4-28 x 6.938 Grip Airframe Bolt, 7.41 UHL, undrilled

1 to 5: $10.99

6 & up: $9.95

In Stock

AN4-74A

1/4-28 x 7.063 Grip Airframe Bolt, 7.53 UHL, undrilled

1 to 5: $11.49

6 & up: $10.41

In Stock

AN4-80A

1/4-28 x 7.563 Grip Airframe Bolt, 8.03 UHL, undrilled

1 to 5: $12.29

6 & up: $11.14

In Stock
 

REVIEW SNAPSHOT®

by PowerReviews
AN4 Airframe Bolt, 1/4-28 Thread
 
5.0

(based on 1 review)

Ratings Distribution

  • 5 Stars

     

    (1)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

Reviewed by 1 customer

Displaying review 1

Back to top

 
5.0

I would buy these again

By Barry P

from Lenoir City, TN

Verified Buyer

Comments about AN4 Airframe Bolt, 1/4-28 Thread:

Met my expectations

Displaying review 1

Back to top