Model: BACB30LU4-43

Close Tolerance Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 2.914 inches and 3.010 inches

Fastener Length

Between 3.097 inches and 3.122 inches

Head Style

Flat countersunk

Head Diameter

Between 0.455 inches and 0.510 inches

Grip Diameter

Between 0.2485 inches and 0.2495 inches

Internal Drive Style

Cross recess type 1

Thread Diameter

0.250 inches

Grip Length

Between 2.677 inches and 2.697 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

125000 pounds per square inch

Countersink Angle

Between 99.0 degrees and 101.0 degrees

Surface Finish

32.0 microinches bearing surface of head

Surface Finish

32.0 microinches threads

Material

Steel comp e4340 or steel comp 8740

Material Specification

Mil-s-5000 military specification 1st material response or mil-s-6049 military specification 2nd material response or ams 6322 assn standard 2nd material response

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2 cl 2 federal specification single treatment response

Thread Series Designator

Unjf

NSN

5305-01-251-7552

Part Number

BACB30LU4-43

Description

Screw,close Tolerance

CAGE

81205

Part BACB30LU4-43 NSN 5305-01-251-7552

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29294

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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