NAS1221R4E4

Close Tolerance Bolt

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Description:

Fastener Length: 11/16", Thread: 1/4-28, Thread Length: 27/64

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NAS1221R4E4
NAS1221R4E4
NAS1221R4E4
NAS1221R4E4
NAS1221R4E4
NAS1221R4E4
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NAS1221R4E4 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches nominal
Fastener Length:
0.661 inches minimum and 0.691 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.461 inches minimum and 0.507 inches maximum
Internal Drive Style:
Torque-set ribbed
Thread Diameter:
0.250 inches
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
Part Name Assigned By Controlling Agency:
Navy special project
Screw Material:
Iron alloy 660
Screw Material Specification:
Ama5731 assn std single material response or ama5732 assn std single material response or ams5737 assn std single material response
Screw Surface Treatment:
Passivate
Screw Surface Treatment Specification:
Qq-p-35 fed spec single treatment response
Thread Series Designator:
Unjf
Specification Data:
80205-nas1221 professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 11/16

Additional Information

SKU / Model: NAS1221R4E4
NSN: 5305-01-365-1910
FSC: Screws / 5305
Product Series: NAS1221R4E
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 096640, Screws, Iron Or Steel
Download PDF Version
NAS1221R4E4_Military-Fasteners-com.pdf
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More NAS1221R4E close tolerance bolts

NAS1221R4E6

Fastener Length: 3/8", Thread: 1/2-

NAS1221R4E5

Fastener Length: 3/4", Thread: 1/4-28, Thread Length: 27/64"

NAS1221R4E3

NAS1221R4E3

NAS1221R4E23

Fastener Length: 1-7/16", Thread: 1/2-

Product Image Gallery

Product code NAS1221R4E4
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NAS1221R4E4
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