NAS8704-20

Close Tolerance Screw

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Description:

Fastener Length: 1-41/64", Thread: 1/4-28, Thread Length: 13/32

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NAS8704-20 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.364 inches minimum and 0.414 inches maximum
Fastener Length:
1.624 inches minimum and 1.654 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.354 inches minimum and 0.399 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:
1.240 inches minimum and 1.260 inches maximum
Thready Qty Per Inch (tpi):
28
Countersink Angle:
100.0 degrees nominal
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Material:
Iron alloy 660 overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416,type 2,class 3 fed spec single treatment response overall
Thread Series Designator:
Unjf
Specification Data:
81205-bacb30ll professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 1-41/64

Additional Information

SKU / Model: NAS870420
NSN: 5305-01-049-5665
FSC: Screws / 5305
Product Series: NAS8704
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS8704-20_Military-Fasteners-com.pdf
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Fastener Length: 1-", Thread: 1/4-28, Thread Length: "

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