BACB30LR4U20

Bolt

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Description:

Fastener Length: 1-11/16", Thread: 1/4-28, Thread Length: 7/16"

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BACB30LR4U20 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.400 inches minimum and 0.450 inches maximum
Fastener Length:
1.660 inches minimum and 1.690 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.455 inches minimum and 0.510 inches maximum
Grip Diameter:
0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Cross recess type 1
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:
Passivate overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 1-11/16

Additional Information

SKU / Model: BACB30LR4U20
NSN: 5305-01-049-7799
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
National Motor Freight: 013680, Alum Screws
Download PDF Version
BACB30LR4U20_Military-Fasteners-com.pdf
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Trisha was very helpful and knowledgeable. She was very friendly and outgoing.

5.0

Military Fasteners provided the supplies needed to repair my prop. They had the exact items I needed, at a good price. My order was delivered in reasonable time, complete with instructions. The end result was a quality repair to get me back flyin again. Thank you! Steve

5.0

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

Products are military grade MIL-SPEC as advertised. I was able to locate #10 locking counter-sunk nutplates when ALL other locations, including Aircraft-Spruce, could not supply.

5.0