NUT
P/N 540-011-121-1
NSN: 5310 00 770 9170
MFG LOCKHEED MARTIN

NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7

ITEM NAME: NUT,PLAIN,HEXAGON
DEFINITION: A nut, flat on top and bottom having 6 flat sides. For items which
have internal tapered or straight (parallel) pipe threads, specific
electrical conduit size designation, and which when installed, provide
a method of tightening to lock the connection, see LOCKNUT, ELECTRICAL
CONDUIT. See also LOCKNUT, TUBE FITTING. For items having a thickness
(or height) exceeding two times the width across the flats, use POST,
ELECTRICAL-MECHANICAL EQUIPMENT. (When height or thickness and/or
width across the flats is designated as a tolerance dimension, the
maximum dimension will be used to determine compliance.)

CHARACTERISTIC VALUE
THREAD CLASS 3B
THREAD DIRECTION RIGHT-HAND
NUT STYLE HEXAGON
NUT HEIGHT 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
WIDTH ACROSS FLATS 1.975 INCHES MINIMUM AND 2.002 INCHES MAXIMUM
THREAD SERIES UNF
THREAD QUANTITY PER INCH 12
NOMINAL THREAD SIZE 1.500 INCHES
COUNTERSINK ANGLE 44.5 DEGREES MINIMUM AND 45.5 DEGREES MAXIMUM NUT
BEARING SURFACE TYPE CHAMFERED OR WASHER FACED
III BEARING SURFACE FINISH 125.0 MICROINCHES
MATERIAL STEEL OVERALL
MATERIAL DOCUMENT AND MIL-S-5000,PHYSICAL COND C,SURFACE COND 1 MIL SPEC
CLASSIFICATION SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT CADMIUM OVERALL
DESIGN CONTROL REFERENCE 540-011-121-1
THE MANUFACTURERS DATA 97499
MANUFACTURERS CODE
SURFACE TREATMENT DOCUMENT QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT
AND CLASSIFICATION RESPONSE OVERALL