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MS27039-4-05

0.344 Inch Length MS27039 Crossed Recessed Structural Machine Screw

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Description

Fastener Length: 3/8", Thread: 1/4-28, Thread Length: 15/64"

Specifications

Fastener Length 0.329 inches minimum and 0.376 inches maximum
Hardness Rating 26.0 rockwell c minimum and 32.0 rockwell c maximum
Head Angle 100 ?
Head Diameter 0.473 inches minimum and 0.492 inches maximum
Head Height 0.162 inches minimum and 0.175 inches maximum
Head Style Pan no. 2
Head Type Recessed
Industry Standards/Certification MS27039
Internal Drive Style Cross recess type 1
Length 0.344 in, 3/8
Material Steel
Min. Tensile Strength (psi) 125000 pounds per square inch
Screw Material Steel comp 4037 or steel comp 8630
Screw Material Specification Ams 6300 assn std 1st material response or mil-s-6050 mil spec 2nd material response
Screw Surface Treatment Cadmium and chromate
Screw Surface Treatment Specification Qq-p-416,ty 2 cl 3 fed spec all treatment responses
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 0.241 inches minimum
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNF
Thread Size 1/4-28
Weight .005 lb

Cross-reference

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Catalog data updated 2026-07-05. Report a data error