Model: MS51109-16

Hexagon Head Cap Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.750 inches and 0.938 inches
Fastener Length
Between 2.906 inches and 3.000 inches
Head Style
Hexagon
Head Height
Between 0.150 inches and 0.163 inches
Width Between Flats
Between 0.428 inches and 0.438 inches
Shank Unthreaded Hole Diameter
0.074 inches first hole and 0.082 inches first hole
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Min. Tensile Strength (psi)
70000 pounds per square inch
Hardness Rating
235.0 brinell b
Minimum Yield Strength
40000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center
2.787 inches first hole and 2.901 inches first hole
Surface Finish
63.0 microinches threads
Material
Steel comp 410 or steel comp 416 or steel comp 430
Material Specification
66 federal standard all material responses
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unc
Nondefinitive Specification/std Data
2 type and 10p style
NSN
5305-01-266-8373
Part Number
MS51109-16
Description
Screw,cap,hexagon Head
CAGE
96906

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

Part MS51109-16 NSN 5305-01-266-8373

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
18257
FIIG:
A003B0
Concept No.:
App. Key:
SB
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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
096640
UFC:
50600
LTL:
70.0
LCL:
--
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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