NSN 4920-12-167-3441, 4920121673441
WERKZEUGAUSSTATTUNG

Federal Supply Classification: FSC 4920 - Aircraft Maintenance and Repair Shop Specialized Equipment
National Item Identification Number: NIIN 121673441
Codification Country: Germany

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DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER: (CRZS) 1.910 INCHES MINIMUM FIRST HOLE AND 2.880 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH: (AASB) 2.980 INCHES MINIMUM AND 3.000 INCHES MAXIMUM
GRIP DIAMETER: (AAUR) 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM
GRIP LENGTH: (ANEE) 2.562 INCHES MINIMUM AND 2.578 INCHES MAXIMUM
HARDNESS RATING: (CQFM) 36.0 ROCKWELL C MINIMUM OVERALL AND 41.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT: (AASU) 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM
HEAD STYLE: (AASK) DISHED HEXAGON
NOMINAL THREAD DIAMETER: (AHYM) 0.250 INCHES
MATERIAL: (MATT) STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 6150 OVERALL
SHANK UNTHREADED HOLE DIAMETER: (AAWB) 0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURES: (FEAT) DETENT RING IN SHANK
THREAD CLASS: (AAJD) 3A
THREAD DIRECTION: (AAJF) RIGHT-HAND
THREAD LENGTH: (AASA) 0.402 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
THREAD SERIES DESIGNATOR: (THSD) UNJF
THREAD QUANTITY PER INCH: (CMLP) 28
WIDTH BETWEEN FLATS: (AATB) 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
SURFACE FINISH: (CSYM) 63.0 MICROINCHES GRIP
SURFACE FINISH: (CSYM) 63.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT: (SFTT) CADMIUM OVERALL AND CHROMATE OVERALL