20-057-4-24D

Bolt

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Description:

Fastener Length: 1-59/64", Thread: 1/4-28, Thread Length: 27/64"

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20-057-4-24D Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches nominal
Fastener Length:
1.925 inches nominal
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:
1.500 inches nominal
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:
1.747 inches nominal first hole
Material:
Steel overall
Material Specification:
Mil-b-7838 mil spec single material response overall
Surface Treatment:
Cadmium overall
Surface Treatment Specification:
Qq-p-416,type 2,class 2 fed spec single treatment response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 1-59/64

Additional Information

SKU / Model: 20057424D
NSN: 5306-01-026-4715
FSC: Bolts / 5306
Product Series: 20
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
20-057-4-24D_Military-Fasteners-com.pdf
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Very pleased with my order. Everything in my order was exactly what I had ordered and the price was fair. Delivered within two days of placing order.

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As always, Military Fasteners demonstrated they value all their customers, in their handling a back order product..Thank you!

4.0

As normal with Military Fasteners for many years, no issues. I order the parts needed and they send them. Just fair prices and good service.

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With ordering parts, I was assisted by Trisha. Extremely helpful, courteous, and professional. When receiving the items, there was a small discrepancy. I contacted Trisha to let her know, and not only did she and another professional, Paige, work with me right there to rectify the situation. They made sure I received new items in a timely manner, at no extra cost. Taking accountability and being serious in keeping with their high standard product has my respect and future business.

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