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Close Tolerance Bolt

Model ST3M75L5-21

Quick Information about ST3M75L5-21

3a thread class, right-hand , 0.551 inches thread length, 1.848 inches fastener length, double hexagon extended washer head style

For pricing and availability of this close tolerance bolt submit the price quote form on the right.

Product Details

  • NSN:
    5306-01-606-0636 (5306016060636)
  • Thread Direction:
    Right-hand
  • Thread Length:
    0.551 inches
  • Fastener Length:
    Between 1.848 inches and 1.878 inches
  • Head Style:
    Double hexagon extended washer
  • Head Height:
    0.312 inches
  • Width Flats:
    Between 0.360 inches and 0.375 inches
  • Extended Diameter:
    Between 0.575 inches and 0.585 inches
  • Extended Thickness:
    0.045 inches
  • Grip Diameter:
    Between 0.3115 inches and 0.3120 inches
  • End Application:
    Specific navy items
  • Thread Diameter:
    0.312 inches
  • Grip Length:
    1.312 inches
  • Thready (tpi):
    24
  • Criticality Justification:
    Agav
  • Part Agency:
    Bolt-close tol, spline drive, flange hd (220 ksi) cres
  • Material Specification:
    Ams5829, ph13 - 8mo assn standard single material response
  • Surface Specification:
    Ams-qq-b-35 assn standard single treatment response
  • Schedule B Code:
    7318152000

Classification

Bolts and bolts and their nuts or washers exported in the same shipment

Definition Close Tolerance Bolt

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.

Part Identification

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
27851
FIIG:
A003B0
Concept No.:
App. Key:
BC
Cond. Code:
1
Status:
A

Part Materials

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
Y

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

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