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AN4 BOLTS 1/4-28

From $0.17 to $41.70
Reference Chart
Reference Chart
Dash No. Nominal
Length
Grip
Length
AN4 Cad Plated
Drilled
AN4 Cad Plated
Undrilled
AN4C Stainless
Drilled
AN4C Stainless
Undrilled
-3 15/32 1/16 $0.63
Quantity
$0.21
Quantity
$4.35
Quantity
$2.18
Quantity
-4 17/32 1/8 $0.72
Quantity
$0.17
Quantity
$1.05
Quantity
$0.69
Quantity
-5 21/32 3/16 $0.69
Quantity
$0.22
Quantity
$1.06
Quantity
$0.72
Quantity
-6 25/32 5/16 $0.68
Quantity
$0.25
Quantity
$1.23
Quantity
$0.76
Quantity
-7 29/32 7/16 $0.70
Quantity
$0.21
Quantity
$1.22
Quantity
$0.78
Quantity
-10 1-1/32 9/16 $0.69
Quantity
$0.23
Quantity
$1.44
Quantity
$0.89
Quantity
-11 1-5/32 11/16 $0.78
Quantity
$0.28
Quantity
$1.34
Quantity
$0.93
Quantity
-12 1-9/32 13/16 $0.83
Quantity
$0.28
Quantity
$1.43
Quantity
$0.94
Quantity
-13 1-13/32 15/16 $0.83
Quantity
$0.28
Quantity
$1.60
Quantity
$1.20
Quantity
-14 1-17/32 1-1/16 $0.76
Quantity
$0.29
Quantity
$1.28
Quantity
$0.94
Quantity
-15 1-21/32 1-3/16 $0.64
Quantity
$0.35
Quantity
$1.86
Quantity
$1.26
Quantity
-16 1-25/32 1-5/16 $1.05
Quantity
$0.40
Quantity
-- $1.08
Quantity
-17 1-29/32 1-7/16 $1.05
Quantity
$0.42
Quantity
$2.90
Quantity
$1.04
Quantity
-20 2-1/32 1-9/16 $0.86
Quantity
$0.43
Quantity
$2.65
Quantity
$1.20
Quantity
-21 2-5/32 1-11/16 $0.82
Quantity
$0.44
Quantity
-- $1.45
Quantity
-22 2-9/32 1-13/16 $0.87
Quantity
$0.39
Quantity
-- $1.29
Quantity
-23 2-13/32 1-15/16 $1.18
Quantity
$0.55
Quantity
-- $1.17
Quantity
-24 2-17/32 2-1/16 $0.95
Quantity
$0.45
Quantity
-- $1.64
Quantity
-25 2-21/32 2-3/16 $0.99
Quantity
$0.51
Quantity
-- $2.00
Quantity
-26 2-25/32 2-5/16 $1.32
Quantity
$0.58
Quantity
-- $2.75
Quantity
-27 2-29/32 2-7/16 $1.19
Quantity
$0.58
Quantity
-- $3.75
Quantity
-30 3-1/32 2-9/16 $1.20
Quantity
$0.79
Quantity
-- $3.76
Quantity
-31 3-5/32 2-11/16 $1.34
Quantity
$0.70
Quantity
-- --
-32 3-9/32 2-13/16 $1.25
Quantity
$0.87
Quantity
-- --
-33 3-13/32 2-15/16 $1.18
Quantity
$0.88
Quantity
-- --
-34 3-17/32 3-1/16 $1.14
Quantity
$0.98
Quantity
-- --
-35 3-21/32 3-3/16 $1.26
Quantity
$0.98
Quantity
-- --
-36 3-25/32 3-5/16 $1.58
Quantity
$0.96
Quantity
-- --
-37 3-29/32 3-7/16 $1.30
Quantity
$1.16
Quantity
-- --
-40 4-1/32 3-9/16 $1.78
Quantity
$1.25
Quantity
-- --
-41 4-5/32 3-11/16 $1.72
Quantity
$1.38
Quantity
-- --
-42 4-9/32 3-13/16 $1.77
Quantity
$1.44
Quantity
-- --
-43 4-13/32 3-15/16 $2.10
Quantity
$1.63
Quantity
-- --
-44 4-17/32 4-1/16 $1.83
Quantity
$1.47
Quantity
-- --
-45 4-21/32 4-3/16 $1.87
Quantity
$1.55
Quantity
-- --
-46 4-25/32 4-5/16 $1.95
Quantity
$1.47
Quantity
-- --
-47 4-29/32 4-7/16 $2.13
Quantity
$1.51
Quantity
-- --
-50 5-1/32 4-9/16 $5.50
Quantity
$2.93
Quantity
-- --
-51 5-5/32 4-11/16 $8.75
Quantity
$6.65
Quantity
-- --
-52 5-9/32 4-13/16 $9.93
Quantity
$7.90
Quantity
-- --
-53 5-13/32 4-15/16 -- $8.50
Quantity
-- --
-54 5-17/32 5-1/16 -- $9.83
Quantity
-- --
-55 5-21/32 5-3/16 $9.74
Quantity
$9.75
Quantity
-- --
-56 5-25/32 5-5/16 $8.97
Quantity
$9.93
Quantity
-- --
-57 5-29/32 5-7/16 $9.95
Quantity
$9.94
Quantity
-- --
-60 6-1/32 5-9/16 $9.68
Quantity
$5.35
Quantity
-- --
-61 6-5/32 5-11/16 -- $9.20
Quantity
-- --
-62 6-9/32 5-13/16 -- $11.90
Quantity
-- --
-64 6-1/2 6-1/16 $12.55
Quantity
$12.85
Quantity
-- --
-66 6-25/32 6-5/16 -- $13.85
Quantity
-- --
-71 7-5/32 6-11/16 $41.70
Quantity
-- -- --
-72 7-9/32 6-13/16 -- $19.50
Quantity
-- --
Subtotal $0.00
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Overview

Hex head aircraft bolts are made of high-strength type 4037 or 8740 alloy steel (type 8740 is most commonly used). The bolts are centerless ground and threaded after heat treatment. Minimum tensile strength 125,000 PSI. Cadmium plated per specification QQ-P-416A, Type II, Class 3. Available with shank drilled for cotter pin or undrilled for stop nut application, and with or without drilled head for safety wire. Specify bolts to have undrilled shank by adding letter "A" after the dash number. For bolts with drilled head add letter "H" after the AN number. See illustrated examples. "C" represents Type 431 Stainless Steel (contains iron which is magnetic). The length of AN aircraft bolts is measured from under the head to the end of the shank. The "grip" is the unthreaded portion of the shank. See table for conversion of length and/or grip to proper AN callout.

15% discount on qty of 50-99
20% discount on qty of 100+


Note: Drilled bolts listed above are drilled shank only. To order drilled head only or both drilled head and shank bolts, please use our AN Bolt Selector by clicking the link below.

Click here for the AN Bolt Selector

Reference Chart

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Reviews

perfect match, perfectfit

P.bouchard
April 15, 2019

Edward B
March 12, 2019

Thomas M
October 5, 2018

What can you say about a bolt? Its either made precisely, or not. The ones I bought appeared to be up to AN specs and were nicely packaged.

Robin O
August 24, 2018

Wheel bolts Part #19 for 6.00-6 Cleveland wheel were originally listed incorrectly as AN4-37A. After I called and provided the correct information & Cleveland pn the error was corrected in the on line display to AN4-36A. The error caused a four day delay getting the wheel back together missing some good flying weather for training. Of course the incorrect bolts were discovered on Saturday morning!

Bob M
August 19, 2018

These bolts are awesome! They are the boltiest bolts on the market. These bolts can be both tightened as well as loosened a added benefit. The fact that they come in so many lengths is great. Now I donât have to use just the one size anymore and add a zillion washers! Bravo Spruce for carrying bolts. Next time try to ship them on time...

Db
June 24, 2018

International A
May 8, 2018

Just what I needed. Good quality!

Charles R
April 23, 2018

perfect

Mike H
April 6, 2018

Excellent ss bolts.

Heath
March 5, 2018

Q&A

Q: What are the quantities for price breaks and the standard package quantities? I know you'll send any quantity, but I'd order above the price breaks and in multiples of the package quantities if they were listed.

The discount schedule for large quantities are: 50-100 = 15% / 100+ = 20%. Package quantities are usually 25 but we can sort them however you prefer as long as you mention it in special instructions at checkout.

Q: How do I order AN4 bolts with the head drilled on line?

Use the AN Bolt Selector page. Keyword search "AN Bolt Selector" on our website and click the first result, then use the drop down selections on the page to choose the bolts you need.

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