NAS1581F4T4

Close Tolerance Screw

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Description:

length: 0.653", thread: 1/4-28 shear, flush reduced head bolt, alloy steel offset cruciform

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NAS1581F4T4
NAS1581F4T4
NAS1581F4T4
NAS1581F4T4
NAS1581F4T4
NAS1581F4T4
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NAS1581F4T4 Datasheet Features and Specification

Countersink Angle:
100.0 degrees
Fastener Length:
0.653 inches
Grip Diameter:
Between 0.248 inches and 0.249 inches
Grip Length:
Between 0.240 inches and 0.260 inches
Hardness Rating:
36.0 rockwell c and 40.0 rockwell c
Head Diameter:
Between 0.350 inches and 0.399 inches
Head Style:
Flat countersunk
Internal Drive Style:
Offset cruciform (torque set)
Material:
Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150
Min. Tensile Strength (psi):
160000 pounds per square inch
Thread Diameter:
0.250 inches
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Surface Treatment:
Cadmium or chromate
Surface Treatment Specification:
Cl2 federal specification single treatment response ty2 qq-p-416
Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.403 inches
Thread Qty Per Inch (tpi):
28
Thread Series Designator:
Unjf (fine thread with external controlled root radius)
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNJF
Thread Class 3A
Material Steel
Length 5/8

Additional Information

SKU / Model: NAS1581F4T4
NSN: 5305-01-417-4446
FSC: Screws / 5305
Product Series: NAS1581F4T
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 50
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS1581F4T4_Military-Fasteners-com.pdf
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NAS1581F4T9

Length: 0.965in., thread: 1/4-28 shear, flush reduced head bolt, alloy steel offset cruciform

NAS1581F4T8

length: 0.903", thread: 1/4-28 shear 100°, flush reduced head bolt - alloy steel offset cruciform

NAS1581F4T7

length: 0.841", thread: 1/4-28 shear 100°, flush reduced head bolt - alloy steel offset cruciform

NAS1581F4T6

$0.90 Each, Length: 0.778in., thread: 1/4-28 shear, flush reduced head bolt, alloy steel offset cruciform

NAS1581F4T5

Length: 0.715in., thread: 1/4-28 shear, flush reduced head bolt, alloy steel offset cruciform

NAS1581F4T3

Length: 0.590in., thread: 1/4-28 shear, flush reduced head bolt, alloy steel offset cruciform

Product Image Gallery

Product code NAS1581F4T4
NAS1581F4T4
NAS1581F4T4
NAS1581F4T4
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NAS1581F4T4

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Customer Reviews

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Ordered on a Monday evening and arrived in New Zealand Friday afternoon. Very good prompt service and the compass was installed on the Saturday after calibration. Thanks Military Fasteners!

5.0

Great service good price although very expensive!

5.0

Great service, always spot on and very expedient! Excellent working with Paige Twombly for quick turnarounds, much appreciated.

5.0

I routinely use Military Fasteners and have them on our Approved Vendor List. They already understand traceability requirements and their website always seems up to date and accurate. Same day shipping is a big deal for us as well."

5.0