HT4056-4-8A

Screw

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Description:

Fastener Length: 15/16", Thread: 1/4-28, Thread Length: 7/16"

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HT4056-4-8A Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.401 inches minimum and 0.451 inches maximum
Fastener Length:
0.911 inches minimum and 0.941 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.456 inches minimum and 0.508 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style:
High-torque
Thread Diameter:
0.250 inches
Grip Length:
0.490 inches minimum and 0.510 inches maximum
Thready Qty Per Inch (tpi):
28
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Material:
Titanium alloy overall
Material Specification:
Nas621 assn std single material response overall
Surface Treatment:
Aluminum overall
Surface Treatment Specification:
Ps13143,ty 2,cl 3 fscm 76301 mfr ref single treatment response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Titanium
Length 15/16

Additional Information

SKU / Model: HT405648A
NSN: 5305-01-130-9017
FSC: Screws / 5305
Product Series: HT4056
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 8108.90.3060
ECCN: 9A991
National Motor Freight: 136500, Metal Noi / Metal Alloys Noi
Download PDF Version
HT4056-4-8A_Military-Fasteners-com.pdf
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Ramona R. is very prompt and professional processing my urgent request! i am very satisfied with the quick turn around. Thank you!

5.0

Recently my avionics technician and I were installing a component in my aircraft and there were some critical fasteners missing from the manufactures package. This stopped the entire process. I called Military Fasteners after finding the parts on line, and Trisha answered the phone. I told her the situation and that I needed them ASAP. I found the parts gave her the part number and she confirmed they were in stock. This was about 430 in the afternoon just before closing. Trisha was kind and professional got the parts out the door that evening even though it was after the shipping cut off. Saved the day. I can tell you this entire company is represented by Trisha, anything they can do to help you out of a jamb they will absolutely go the extra mile and Trisha is the go to person. I am sure there are others there with her same attitude and professionalism. This is a great resource for all your fasteners needs.

5.0

Ryan was extremely helpful and is typical of the type of customer service I am accustomed to when I ask for help at Military Fasteners.

5.0

Military Fasteners is one of my top hardware suppliers. If you can't find a mil-spec part, they will find it for you. Shipping is always fast and reliable. Kristen is phenomenal to work with. Highly recommend.

5.0