OmniSynk Distribution Services

BACB30LR4-10

Screw, Close Tolerance

Part number
BACB30LR4-10
NSN
5305-01-242-9938
NIIN
012429938
Item name
Screw, Close Tolerance
Manufacturer
Federal Manufacturing Corporation
CAGE code
17943
FSC
5305 — Screws
Unit of issue
EA
DEMIL code
A

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Alternate part numbers

Technical characteristics

Thread Class
3A
Thread Direction
Right-hand
Thread Series
UNJF
Thread Quantity per Inch
28
Nominal Thread Diameter
0.250 inches (1/4-28)
Thread Length
0.410 in min / 0.440 in max
Fastener Length
1.035 in min / 1.065 in max
Grip Length
0.625 inches nominal
Grip Diameter
0.2485 in min / 0.2490 in max
Head Style
Flat countersunk
Head Diameter
0.455 in min / 0.510 in max
Countersink Angle
99.0 deg min / 101.0 deg max
Internal Drive Style
Cross recess type 1
Material
Iron alloy 660 overall
Surface Treatment
Passivate overall
Catalogue data is compiled from public DLA/FLIS sources and is provided for identification. Availability, condition and certification are confirmed on quotation. OmniSynk Distribution Services is a stocking distributor.

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