20-057-4-81D

Bolt

email this to someone  
Description:

Fastener Length: 5-1/2", Thread: 1/4-28, Thread Length: 7/16"

* Manufacturer certifications are shipped with your order FREE of charge
no image available
Add to Quote We are currently out of stock of this item. Click the button below to add this item to a quote and receive up to date pricing and availability by email.

Add to Quote

20-057-4-81D Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.400 inches minimum and 0.450 inches maximum
Fastener Length:
5.472 inches minimum and 5.502 inches maximum
Head Style:
Hexagon
Head Height:
0.125 inches minimum and 0.140 inches maximum
Width Between Flats:
0.430 inches minimum and 0.439 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Shank Unthreaded Hole Diameter:
0.076 inches minimum first hole and 0.086 inches maximum first hole
Thread Diameter:
0.250 inches
Grip Length:
5.052 inches minimum and 5.072 inches maximum
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Hardness Rating:
36.0 rockwell c minimum overall and 40.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center:
5.284 inches minimum first hole and 5.334 inches maximum first hole
Material:
Steel comp e4340 overall or steel comp 4340 overall or steel comp 4140 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 6150 overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416,ty 2,cl 2 fed spec all treatment responses overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 5-1/2

Additional Information

SKU / Model: 20057481D
NSN: 5306-01-028-4833
FSC: Bolts / 5306
Product Series: 20
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
20-057-4-81D_Military-Fasteners-com.pdf
Worldwide Shipping

* report an issue on this page

More 20 machine bolts

206756-1

Bolt

206418-2

Length: 7-3/8"

205937

Bolt

202-15523-3-9

$13.50 EA, Fastener Length: 15/16in. Thread: 10-32 Thread Length: 3/8in.

202-15523-3-4

$2.70 EA, 202-15523-3-4

202-15523-3-3

Fastener Length: 9/16", Thread: 10-32, Thread Length: 3/8"

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

You all are Awesome! I am restoring a 1946 all aluminum camper and have come to you several times for materials needed. Every time I order, I get a quality product at a fair price in a timely manner. I couldn't ask for more.

5.0

Exactly what I needed, very well packaged, fast shipment. I`m pleased with purchase.

5.0

Great Customer Service very helpful...Packaged arrived almost the next day. How did you do that. Thank you again. will be doing business with you again soon !!!

5.0

Thanks for a super fast processing of my order. Terrific to do business with you.

5.0