AN4-31
Aeronautical Standard Machine Bolt
length: 3-5/32", grip: 2-11/16", thread: 1/4-28, cadmium plated steel drilled shank






AN4-31 Datasheet Features and Specification
Quick Specs
Thread Size | 1/4 |
Thread Qty | 28 |
Thread Series | UNF |
Thread Class | 3A |
Material | Steel |
Additional Information
SKU / Model: | AN431 |
NSN: | 5306-00-622-1823 |
FSC: | Bolts / 5306 |
Product Series: | AN4 |
Pack Weight (Approx.) | 0.000 lb |
Minimum Qty (MOQ): | 10 |
ECCN: | EAR99 |
National Motor Freight: | 093486, Bolts,nuts Or Screws, Noi (sub 3) |
Download PDF Version AN4-31_Military-Fasteners-com.pdf |
|
![]() ![]() |
* report an issue on this page
Frequently bought together
Other customers frequently bought these along with AN4-31

MS21042L5
Self-Locking Extended Washer Nut
in Nuts
Thread: 5/16-24, reduced hexagon, reduced height, cad plated steel, dry film lubricated. locknut, MS21042 series nut
More AN4 machine bolts
$1.02 Each, airframe bolt 1/4-28 Thread, 7/16in. Grip, 29/32in. Length drilled head undrilled shank
Length: 29/32in., grip: 7/16in., thread: 1/4-28, cadmium plated steel drilled shank, drilled head
Length: 25/32in., grip: 5/16in., thread: 1/4-28, cadmium plated steel undrilled shank drilled head
Fastener Length: 6-13/16", Hole Diameter: 1/32", Thread: 1/4-28, Thread Length: 33/64"
Fastener Length: 6-", Hole Diameter: 1/32", Thread: 1/4-28, Thread Length: 15/32"
$1.50 Each, Length: 25/32in., grip: 5/16in., thread: 1/4-28, cadmium plated steel drilled shank drilled head
Product Image Gallery
Product code AN4-31





Have a question
If you require a quote on this or any product please visit our quote request page »
Browse our frequently asked questions page.
You may contact us by phone at +1 (904) 543-6395 or
email us using our contact form.
Our hours of operation are 8:00am - 6:00pm EST
Customer Reviews

Brittany has always provided me with excellent service on phone calls and in emails! Brittany is always extremely helpful, friendly and she goes the extra mile to help! Thank you very much Brittany!!
Love doing business with Military Fasteners...good prices...great products...fast delivery.
Local Guide·"Great customer service from Brittany. She is awesome. Good prices and parts are n stock. Thx Brit for helping with my parts needed on short notice."
Easy ordering format, fast delivery, packaged and documented well.
Please complete this form if you're having an issue with ordering this item or this item displays invalid or innacurate information or specifications. We thank you for taking the time to report issues so that we may better serve you.