NAS1581K4R6

Bolt

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Description:

Fastener Length: 25/32", Thread: 1/4-28, Thread Length: 3/8"

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NAS1581K4R6 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.403 inches maximum
Fastener Length:
0.763 inches minimum and 0.793 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.350 inches minimum and 0.399 inches maximum
Grip Diameter:
0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Offset cruciform (torque set)
Thread Diameter:
0.250 inches
Grip Length:
0.365 inches minimum and 0.385 inches maximum
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Special Features:
Internal drive ribbed
Material:
Titanium alloy uns r56400 overall
Material Specification:
Ams 4928 assn std single material response overall or ams 4967 assn std single material response overall
Thread Series Designator:
Unjf
Specification Data:
80205-nas1581 professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Titanium
Length 25/32

Additional Information

SKU / Model: NAS1581K4R6
NSN: 5305-01-174-2896
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10 EA
Schedule B: 8108.90.3060
ECCN: EAR99
National Motor Freight: 136500, Metal Noi / Metal Alloys Noi
Download PDF Version
NAS1581K4R6_Military-Fasteners-com.pdf
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Service was great, shipped and received with paperwork as promised, definitely would give a two thumbs up.

5.0

You guy's are awesome. I haven't had any mistakes from you in all my years of ordering from you. Your sales agents have always been helpful and friendly. Keep up the good work.

5.0

Trisha Hawkins and her team at Military Fasteners are absolutely incredible. We do a lot of Government and Military work and due to this there are a ton of restrictions with what products we can use. I called Military Fasteners (MF) with an extremely HOT request. Trisha was able to source those part numbers, tell me they were in stock and ready to ship. I ordered these on a Wednesday at 4:00pm. They shipped the same exact Wednesday, we received that weeks Friday, even though we were guaranteed Monday/Tuesday. Trisha - THANK YOU! Trisha's Team - THANK YOU! I will only be ordering my military hardware from you all.

5.0

Amanda was super friendly, helpful and part quality is A+!

5.0