AN4-21A

Aeronautical Standard Machine Bolt

email this to someone  
Description:

length: 2-5/32", grip: 1-11/16", thread: 1/4-28, cadmium plated steel, undrilled shank

* Manufacturer certifications are shipped with your order FREE of charge
AN4-21A
AN4-21A
AN4-21A
AN4-21A
AN4-21A
AN4-21A
Add to Cart Up to qty 600 ships same day if ordered before 4pm EST
AN4-21A Price:
buy now
$0.73 Each
Quantity:
Pre-packaged bag qty: 50 ea
* Sold in increments of 50
Add item to quote  

AN4-21A Datasheet Features and Specification

Thread Direction:
Right-hand
Thread Diameter:
0.250 inches
Thread Class:
3a
Surface Treatment Specification:
Class 3 federal specification all treatment responses type 2 qq-p-416
Surface Treatment:
Cadmium and chromate
Min. Tensile Strength (psi):
125000 pounds per square inch
Material Specification:
Mil-b-6812 military specification all material responses
Material:
Steel
Head Style:
Hexagon
Head Height:
Between 0.140 inches and 0.172 inches
Hardness Rating:
26.0 rockwell c and 32.0 rockwell c
Grip Length:
1.688 inches
Features Provided:
Finished head
Fastener Length:
2.156 inches
Thread Length:
0.468 inches
Thread Qty Per Inch (tpi):
28
Thread Series Designator:
Unf (fine thread)
Width Between Flats:
Between 0.428 inches and 0.440 inches
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNF
Thread Class 3A
Material Steel

Additional Information

SKU / Model: AN421A
NSN: 5306-00-151-1415
FSC: Bolts / 5306
Product Series: AN4
Pack Weight (Approx.) 1.770 lb
Minimum Qty (MOQ): 50
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
AN4-21A_Military-Fasteners-com.pdf
Worldwide Shipping In stock and ready to ship!

* report an issue on this page

Frequently bought together

Other customers frequently bought these along with AN4-21A

Picture of AN4-20A

AN4-20A
Machine Bolt

in Bolts

Length: 2-1/32", grip: 1-9/16", thread: 1/4-28, cadmium plated steel, undrilled shank

Picture of AN4-22A

AN4-22A
Machine Bolt

in Bolts

length: 2-9/32", grip: 1-13/16", thread: 1/4-28, cadmium plated steel, undrilled shank, hexagon head, AN4 series bolt

Picture of AN3-6A

AN3-6A
Machine Bolt

in Bolts

Length: 25/32", grip: 3/8", thread: 10-32, cadmium plated steel, undrilled shank, AN3 series bolt

Picture of AN4-17A

AN4-17A
Machine Bolt

in Bolts

length: 1-29/32", grip: 1-7/16", thread: 1/4-28, cadmium plated steel, undrilled shank, AN4 series bolt

Picture of AN4-6A

AN4-6A
Machine Bolt

in Bolts

Length: 25/32, grip: 5/16", thread: 1/4-28, cadmium plated steel, undrilled shank, airframe, AN4 series bolt

Picture of AN4-24A

AN4-24A
Machine Bolt

in Bolts

length: 2-17/32", grip: 2-1/16", thread: 1/4-28, cadmium plated steel, undrilled shank, AN4 series bolt

More AN4 machine bolts

AN4H7A

$1.02 Each, airframe bolt 1/4-28 Thread, 7/16in. Grip, 29/32in. Length drilled head undrilled shank

AN4H7

Length: 29/32in., grip: 7/16in., thread: 1/4-28, cadmium plated steel drilled shank, drilled head

AN4H6A

Length: 25/32in., grip: 5/16in., thread: 1/4-28, cadmium plated steel undrilled shank drilled head

AN4H66A

Fastener Length: 6-13/16", Hole Diameter: 1/32", Thread: 1/4-28, Thread Length: 33/64"

AN4H60A

Fastener Length: 6-", Hole Diameter: 1/32", Thread: 1/4-28, Thread Length: 15/32"

AN4H6

$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 AN4-21A
AN4-21A
AN4-21A
AN4-21A
AN4-21A
AN4-21A
AN4-21A

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

Google View our Google profile

Ordering is easy, prices are generally the best around, and now that USPS is a shipping option, everything is good!

4.0

Ive been purchasing aircraft parts and hardware from Military Fasteners for over 4 years. That alone should speak volumes. Ive always received excellent customer service and the product quality is unrivaled. When I think of aircraft parts and accessories, Im thinking Military Fasteners. Keep up the excellent work folks! Regards, Ed

5.0

Trisha Hawkins is extremely helpful and answered every question I had thoroughly. I appreciate her great help in a stressful situation to obtain hardware ASAP.

5.0

Even though we weren't a customer yet, Paige was very fast to reply and attentive to our requests. Thanks for the great service!

5.0