Model: STD1688

Machine Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.690 inches
Fastener Length
1.000 inches
Head Style
Hexagon
Head Height
0.160 inches
Width Between Flats
Between 0.428 inches and 0.440 inches
Thread Diameter
0.250 inches
Grip Length
0.310 inches
Features Provided
Finished head
Thready Qty Per Inch (tpi)
20
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Material
Steel comp 8735 or steel comp 4037
Material Specification
Ams 6320 assn standard 1st material response or ams 6300 assn standard 2nd material response
Surface Treatment
Cadmium
Thread Series Designator
Unc
NSN
5306-00-550-0705
Part Number
STD1688
Description
Bolt,machine
CAGE
80254

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

Part STD1688 NSN 5306-00-550-0705

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01847
FIIG:
A003B0
Concept No.:
App. Key:
BR
Cond. Code:
1
Status:
A

Material Classification

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

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

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