LL500-4-4

Screw

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Description:

Fastener Length: 1/4", Thread: 4-40, Thread Length: 1/4"

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LL500-4-4 Datasheet Features and Specification

Thread Class:
2a
Thread Direction:
Right-hand
Thread Length:
0.200 inches minimum and 0.250 inches maximum
Fastener Length:
0.219 inches minimum and 0.250 inches maximum
Head Style:
Fillister
Head Diameter:
0.166 inches minimum and 0.183 inches maximum
Head Height:
0.072 inches minimum and 0.079 inches maximum
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.112 inches
Thready Qty Per Inch (tpi):
40
Min. Tensile Strength (psi):
60000 pounds per square inch
Part Name Assigned By Controlling Agency:
Screw, machine, fillister head, coarse thread
Screw Material:
Steel or steel comp 1010
Screw Material Specification:
Qq-s-630 fed spec 2nd material response or qq-s-631 fed spec 2nd material response or qq-s-634 fed spec 2nd material response
Screw Surface Treatment:
Cadmium
Screw Surface Treatment Specification:
Qq-p-416,ty 1,cl 3 fed spec single treatment response
Special Features:
With self-locking element
Thread Series Designator:
Unc
Quick Specs
Thread Size 4
Thread Qty 40
Material Steel
Length 1/4

Additional Information

SKU / Model: LL50044
NSN: 5305-01-518-6228
FSC: Screws / 5305
Product Series: LL500
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 15 EA
Schedule B: 7318.15.6080
ECCN: 9A991
Download PDF Version
LL500-4-4_Military-Fasteners-com.pdf
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More LL500 machine screws

LL500D6-7

Fastener Length: 7/16", Thread: 6-32, Thread Length: 7/16"

LL500A2-7

Fastener Length: 7/16", Thread: 2-56, Thread Length: 7/16"

LL500-6-8M

Fastener Length: 1/2", Thread: 6-32, Thread Length: 1/2"

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Customer Reviews

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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

Staff very supportive and informative. Order was shipped extremely promptly and correctly. GREAT customer service!

5.0

Everything I ordered was delivered quickly, packaged well. In fact, all of my prior orders as well.

5.0

I was very pleased with the processing of my order from Military Fasteners. Placed my order very late on Thursday. Confirmation was immediate and received a tracking number the next day. It was delivered on the Monday. Excellent service from Military Fasteners

5.0