NSN 5306-01-478-2957

Part Details | CLOSE TOLERANCE BOLT

5306-01-478-2957 An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.

Alternate Parts: VS3204427, VS3204-4-27, ST3M453427, ST3M453-4-27, ST3M453, FIT7047427, FIT7047-4-27, HP5453427, HP5453-4-27, MB61427, MB61-4-27, BM17019427, BM17019-4-27, ST3M453427, ST3M453-4-27, KS3020427, KS3020-4-27, MB61427, MB61-4-27, 11825427, 11825-4-27, S111060427, S11-1060-4-27, 109453427, 109453-4-27, 109453427, 109453-4-27, 109453427, 109453-4-27, AIC753427, AIC753-4-27, PBF1253427, PBF1253-4-27, VAL23029427, VAL23029-4-27, 5306-01-478-2957, 01-478-2957, 5306014782957, 014782957

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 06, 200001-478-295727851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DOUBLE HEXAGON

Cross Reference | NSN 5306-01-478-2957
Part Number Cage Code Manufacturer
VS3204-4-2706950ARCONIC GLOBAL FASTENERS & RINGS,INC.
ST3M453-4-2776301BOEING COMPANY, THEDBA BOEING
ST3M45376301BOEING COMPANY, THEDBA BOEING
FIT7047-4-2758998FASTENER INNOVATION TECHNOLOGY, INC.DBA F I T
HP5453-4-270ZC92HEARTLAND PRECISION FASTENERS, INC.
MB61-4-2773197HI-SHEAR CORPORATION
BM17019-4-2717446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
ST3M453-4-2759764KENALOY PRODUCTS INC SUBMASCO CORP
KS3020-4-2759764KENALOY PRODUCTS INC SUBMASCO CORP
MB61-4-27L4528LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC
11825-4-2759563REID PRODUCTS INC.DBA REID PRODUCTS
S11-1060-4-2757928SONIC INDUSTRIES INC.
109453-4-270PTK6SPS TECHNOLOGIES INC
109453-4-2756878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
109453-4-2780539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
AIC753-4-2706725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
PBF1253-4-2727624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
VAL23029-4-2706710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
Technical Data | NSN 5306-01-478-2957
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH32
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.397 INCHES NOMINAL
FASTENER LENGTH2.070 INCHES MINIMUM AND 2.116 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH5650 POUNDS PER SQUARE INCH
HEAD STYLE DOUBLE HEXAGON
HEAD HEIGHT0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.491 INCHES MINIMUM
GRIP LENGTH1.688 INCHES NOMINAL
GRIP DIAMETER0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
SPECIAL FEATURESDOUBLE SHEAR STRENGTH MIN IN LBS 12,280
PART NAME ASSIGNED BY CONTROLLING AGENCYSHEARBOLT, HIGH STRENGTH, 12 PT HEAD, PH13-8, MOLYBDENUM