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		                             National Stock Number: 5307-01-437-6988
  Federal Supply Class: 5307
  National Item Identification Number: 014376988
  Description: STUD,SELF-LOCKING
  Detail: A headed fastener threaded externally on a portion or on the full length of the shank. The head has projections on the underside or periphery, or is otherwise designed to be mechanically pressed and embedded in a metallic panel, or the like. It is securely locked in position by the displaced metal. For items that require locking rings, see BOLT, SELF-LOCKING and STUD, LOCKED IN. Excludes INSERT, SCREW THREAD. 
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  Manufacturer Information:
 | M63540/3-26-7 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |  | MIL-S-63540/3 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |   
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  Techincal Specification:
 | MATERIAL | STEEL COMP 302 OR |   | STEEL COMP 303 OR |   | STEEL COMP 303SE |  | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A493, COMP 302 ASSN STD 1ST MATERIAL RESPONSE OR |   | ASTM A582, COMP 303 ASSN STD 2ND MATERIAL RESPONSE OR |   | ASTM A582, COMP 303SE ASSN STD 3RD MATERIAL RESPONSE |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | STYLE DESIGNATOR | SELF-LOCKING |  | HEAD DIAMETER | 0.261 INCHES NOMINAL |  | HEAD LENGTH | 0.055 INCHES MINIMUM AND |   | 0.061 INCHES MAXIMUM |  | DISTANCE ACROSS FLATS | 0.297 INCHES MINIMUM AND |   | 0.327 INCHES MAXIMUM |  | OVERALL LENGTH | 0.4375 INCHES NOMINAL |  | THREAD SERIES DESIGNATOR | UNF NUT THREAD |  | NOMINAL THREAD SIZE | 0.190 INCHES NUT THREAD |  | THREAD CLASS | 2A NUT THREAD |  | THREAD QUANTITY PER INCH | 32 NUT THREAD |  | THREAD DIRECTION | RIGHT-HAND NUT THREAD |  | THREAD LENGTH | 0.4375 INCHES NOMINAL NUT THREAD |  | LOCKING FEATURE | SELF-CLINCHING HEAD |  | SPEC/STD CONTROLLING DATA |  |  | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-S-63540/3 |  | MANUFACTURERS CODE | 81349 |  | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M63540/3-26-7 |   
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