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AN4 BOLTS 1/4-28

From $0.17 to $19.50
Reference Chart

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Dash No. Nominal
Length
Grip
Length
AN4 Cad Plated
Drilled
AN4 Cad Plated
Undrilled
AN4C Stainless
Drilled
AN4C Stainless
Undrilled
-315/321/16$0.78
Quantity
$0.21
Quantity
$5.35
Quantity
$2.18
Quantity
-417/321/8$0.72
Quantity
$0.17
Quantity
$1.17
Quantity
$0.69
Quantity
-521/323/16$0.69
Quantity
$0.22
Quantity
$1.06
Quantity
$0.72
Quantity
-625/325/16$0.90
Quantity
$0.25
Quantity
$1.69
Quantity
$0.76
Quantity
-729/327/16$0.87
Quantity
$0.21
Quantity
$1.36
Quantity
$0.78
Quantity
-101-1/329/16$0.69
Quantity
$0.27
Quantity
$2.05
Quantity
$0.89
Quantity
-111-5/3211/16$1.18
Quantity
$0.32
Quantity
$1.65
Quantity
$0.93
Quantity
-121-9/3213/16$1.00
Quantity
$0.28
Quantity
$1.99
Quantity
$1.04
Quantity
-131-13/3215/16$1.04
Quantity
$0.32
Quantity
$1.60
Quantity
$1.47
Quantity
-141-17/321-1/16$1.22
Quantity
$0.37
Quantity
$1.84
Quantity
$1.25
Quantity
-151-21/321-3/16$0.84
Quantity
$0.43
Quantity
$1.86
Quantity
$1.50
Quantity
-161-25/321-5/16$1.14
Quantity
$0.40
Quantity
--$1.08
Quantity
-171-29/321-7/16$1.05
Quantity
$0.42
Quantity
$2.90
Quantity
$1.04
Quantity
-202-1/321-9/16$1.12
Quantity
$0.63
Quantity
$2.65
Quantity
$1.20
Quantity
-212-5/321-11/16$0.99
Quantity
$0.44
Quantity
--$1.45
Quantity
-222-9/321-13/16$1.01
Quantity
$0.61
Quantity
--$1.53
Quantity
-232-13/321-15/16$1.18
Quantity
$0.70
Quantity
--$1.17
Quantity
-242-17/322-1/16$0.99
Quantity
$0.72
Quantity
--$2.19
Quantity
-252-21/322-3/16$1.11
Quantity
$0.79
Quantity
--$4.90
Quantity
-262-25/322-5/16$1.32
Quantity
$0.58
Quantity
--$2.75
Quantity
-272-29/322-7/16$1.35
Quantity
$0.85
Quantity
--$3.75
Quantity
-303-1/322-9/16$1.20
Quantity
$0.79
Quantity
--$3.76
Quantity
-313-5/322-11/16$1.70
Quantity
$0.84
Quantity
----
-323-9/322-13/16$1.25
Quantity
$0.87
Quantity
----
-333-13/322-15/16$1.18
Quantity
$0.88
Quantity
----
-343-17/323-1/16$1.47
Quantity
$0.99
Quantity
----
-353-21/323-3/16$1.26
Quantity
$0.98
Quantity
----
-363-25/323-5/16$1.58
Quantity
$0.96
Quantity
----
-373-29/323-7/16$1.30
Quantity
$1.32
Quantity
----
-404-1/323-9/16$1.78
Quantity
$1.25
Quantity
----
-414-5/323-11/16$1.72
Quantity
$1.38
Quantity
----
-424-9/323-13/16$2.01
Quantity
$1.44
Quantity
----
-434-13/323-15/16$2.10
Quantity
$1.63
Quantity
----
-444-17/324-1/16$1.83
Quantity
$1.47
Quantity
----
-454-21/324-3/16$2.05
Quantity
$1.55
Quantity
----
-464-25/324-5/16$1.95
Quantity
$1.47
Quantity
----
-474-29/324-7/16$2.13
Quantity
$1.51
Quantity
----
-505-1/324-9/16$5.50
Quantity
$2.93
Quantity
----
-515-5/324-11/16$8.75
Quantity
$6.65
Quantity
----
-525-9/324-13/16$9.93
Quantity
$7.90
Quantity
----
-535-13/324-15/16--$8.50
Quantity
----
-545-17/325-1/16--$9.83
Quantity
----
-555-21/325-3/16$9.74
Quantity
$9.75
Quantity
----
-565-25/325-5/16$8.97
Quantity
$9.93
Quantity
----
-575-29/325-7/16$9.95
Quantity
$9.94
Quantity
----
-606-1/325-9/16$9.68
Quantity
$13.90
Quantity
----
-616-5/325-11/16--$10.50
Quantity
----
-626-9/325-13/16--$11.90
Quantity
----
-646-1/26-1/16$12.55
Quantity
$12.85
Quantity
----
-666-25/326-5/16--$13.85
Quantity
----
-727-9/326-13/16--$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

AN4-52A meets specks.

Darrin T Verified Purchase

BOLT UNDRILLED AN4-52A

July 22, 2021

A quality AN Bolt. Looks and works as it should. I buy from Spruce because of their reputation for quality. In Aircraft training was taught the horror stories of lives lost due to failed scaffolding caused by cheap, counterfeit, imported AN bolts. I was trained the best way to assure quality AN hardware was to only buy from trusted aviation suppliers.

Aldon G Verified Purchase

BOLT UNDRILLED AN4-15A

July 21, 2021

Douglas H Verified Purchase

AN4C-12A SS UNDRILLED BOLT

July 15, 2021

Marc-antoine G Verified Purchase

BOLT UNDRILLED AN4-36A

July 14, 2021

as advertised

Dan C Verified Purchase

AN4-3A BOLT UNDRILLED

July 10, 2021

Great product

Patrick W Verified Purchase

BOLT UNDRILLED AN4-24A

July 7, 2021

Great product

Patrick W Verified Purchase

BOLT UNDRILLED AN4-30A

July 7, 2021

Quality product

David C Verified Purchase

BOLT UNDRILLED AN4-6A

July 2, 2021

Michael P Verified Purchase

BOLT UNDRILLED AN4-10A

June 29, 2021

Michael P Verified Purchase

BOLT UNDRILLED AN4-15A

June 29, 2021

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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