SAME DAY SHIPPING ON ORDERS PLACED BY 2 PM | 877-795-2278
Thumbs 1
Thumbs 1

BOLT UNDRILLED AN3-6A

Packaged Items
SinglePack of 25
Dash No.Nominal LengthGrip Length
-625/323/8

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. (AN3H-15) 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. "C" stands for stainless. Others are cadmium plated.

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

Reference Chart

Reviews

They meet the specs.

Millard F Verified Purchase

BOLT UNDRILLED AN3-6A

April 19, 2024

Rob A Verified Purchase

BOLT UNDRILLED AN3-6A

February 13, 2024

Good

Aircraft I Verified Purchase

BOLT UNDRILLED AN3-6A (PACK OF 25)

January 31, 2024

exactly as advertised in the catalog and very reasonably priced. telephone call service was very knowledgeable in the product details.

Robert H Verified Purchase

BOLT UNDRILLED AN3-6A

May 23, 2023

Excellent service As requested

Jean R Verified Purchase

BOLT UNDRILLED AN3-6A (PACK OF 25)

May 16, 2023

Magaero L Verified Purchase

BOLT UNDRILLED AN3-6A (PACK OF 25)

April 22, 2023

Timothy L Verified Purchase

BOLT UNDRILLED AN3-6A

November 19, 2022

As order. Fast delivery.

Rich G Verified Purchase

BOLT UNDRILLED AN3-6A

November 17, 2022

👍

Joachim S Verified Purchase

BOLT UNDRILLED AN3-6A (PACK OF 25)

September 12, 2022

Leslie H Verified Purchase

BOLT UNDRILLED AN3-6A

April 19, 2022

Q&A

Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the diameter tolerance on a 3/8-24 AN bolt?

The max is .374", and min .371"

Q: How do I add the H after the AN for an AN3 bolt with a drilled head while ordering on-line?

The chart online only offers the bolts with drilled or undrilled shank in both stainless and cadmium. If you wish to order drilled head, you will need to either use the "AN Bolt Selector" which can be foundby searching that phrase on our site, or using the "Order By Part Number" link near the "Cart" icon on each page.

Q: Which nut do I order for AN3-4A?

AN3 bolts use AN365-1032A (Cad Plated) or AN365C-1032 (Stainless) for locknuts and AN310-3 for castle nuts.

Q: Are the stainless bolts (AN3C) the same tensile strength as the cad plated ones?

The tech data sheet does not list a separate tensile strength for corrosion-resistant steel bolts. That would indicate they would be rated the same per the TDS.

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: What is the safety wire diameter recommended for the drilled version?

It depends on the application, but both .032 and .041 will fit through the hole.

Q: On a drilled shank, where is the hole located in reference to the end?

Per the Tech Data Sheet, the hole location is determined from the start of the threads, on the head side, to the center of the drilled hole. AN3 = 17/64", AN4 = 5/16", AN5 = 23/64", AN6 = 7/16", AN7 = 31/64", AN8 = 39/64".

Q: What is the difference between stainless and cadmium plated AN bolts?

Stainless bolts are corrosion resistant for applications where corrosion is a problem. CAD plated bolts are made of steel with CAD plating to help surface corrosion, but it can been worn or chipped off.

Q: Is the nominal length listed the entire bolt (head, grip and thread) or just the grip and thread?

The nominal length is the length from under the head to the end of the shank.

Q: Picture clearly shows a bolt with both head drilled and shank drilled, but bolt selector does not allow that choice?

We do offer all of the types shown, but unfortunately not in every size. For example, drilled head is not available in AN4-3 stainless, but is available in AN5-4 cadmium.

View in Catalog

View Image View in Catalog