This post explains for the Military Screw.
The Part Number is MS51959.
The function of this semiconductor is Military Standard, Screw.
Manufacturer: Aircraft, ETC
Images
Description
Military Standard, Screw, Machine-Flat Countsunk Head
1. MATERIAL :
Austenitic Corrosion-Resistant Steel screws shall be manufactured from Type 302 (UNS S30200), Type 304 (UNS S30400), Type 304L (UNS S30403), Type 305 (UNS S30500), Type 316 (UNS S31600), Type 316L (UNS S31603), Type 384 (UNS S38400), or Type XM-7 (UNS S30430) in accordance with chemical composition specified in QQ-S-763 . (See Material Identification Marking and Material Code).
2. PART NUMBER :
The part number shall consist of the basic MS number, followed by a dash number from Table I, a material code (if applicable), and a finish code (if applicable). Examples: MS51959-1 indicates Screw, Machine-Flat Countersunk Head, 82°, Cross-Recessed, 300 Series CRES, Passivated; .0860-56 UNC-2A Nominal Thread Size, .125 Length MS51959-1B indicates Screw, Machine-Flat Countersunk Head, 82°, Cross-Recessed, Optional 300 Series CRES, Black Oxide Coated; .0860-56 UNC-2A Nominal Thread Size, .125 Length MS51959-1S316 indicates Screw, Machine-Flat Countersunk Head, 82°, Cross-Recessed, Type 316 CRES; Passivated; .0860-56 UNC-2A Nominal Thread Size, .125 Length
Specifications
Ordering Information
MS51959 Datasheet
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