5306-01-143-1749 BOLT,EXTERNALLY RELIEVED BODY Index 5305-01-143-1751 SCREW,SHOULDER

National Stock Number:
5306-01-143-1750

Federal Supply Class:
5306

National Item Identification Number:
011431750

Description:
BOLT,ECCENTRIC HEAD

Detail:
AN EXTERNALLY THREADED FASTENER THE HEAD OF WHICH IS USUALLY FLAT WITH A PERIPHERY NOT CONCENTRIC TO THE BOLT SHANK. THE HEAD IS NOT DESIGNED FOR WRENCHING. IT MAY HAVE A DRIVE FEATURE LOCATED AT THE THREADED END, WHICH CAN BE USED TO ROTATE THE SCREW AND ECCENTRIC HEAD INTO A LOCKING POSITION TO SECURE A FLANGED OR GROOVE COMPONENT.


Manufacturer Information:
65122-11227-1040UCY9M.S. AEROSPACE INC.
65122-11227-10458078AIRTRONICS, LLC
65122-11227-10465780TEK PRECISION CO LIMITED
65122-11227-10478286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
DISTANCE FROM CENTER OF HEAD TO CENTER OF SHANK2.648 INCHES NOMINAL
FASTENER LENGTH5.295 INCHES NOMINAL
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER1.250 INCHES NOMINAL
HEAD HEIGHT0.375 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000,COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4340 OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.875 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONSS8487,FSCM 78286 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTSILVER OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH14
WIDTH BETWEEN FLATS1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM


Click here to Register for Free 30-day Trial

© 2025 NSN-Now. All rights reserved.    Privacy Policy  |  Contact Us