3/8"-16 x 3-1/4" Grade 8 Plain Finish Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 1.000 INCHES NOMINAL FASTENER LENGTH: 3.190 INCHES MINIMUM AND 3.250 INCHES MAXIMUM HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM END ITEM IDENTIFICATION: MRAP - UNIQUE NSN - MAXXPRO CAT I NOMINAL THREAD DIAMETER: 0.375 INCHES THREAD QUANTITY PER INCH: 16 PART NAME ASSIGNED BY CONTROLLING AGENCY: BOLT, 3/8 X 3-1/4 PHC TYPE 8 MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: SAE J429, GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL PROPRIETARY CHARACTERISTICS: NPAC SURFACE TREATMENT: OIL OVERALL THREAD SERIES DESIGNATOR: UNC