Model: AN509-816R18

Machine Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.697 inches and 0.875 inches
Fastener Length
Between 1.188 inches and 1.234 inches
Head Style
Flat countersunk
Head Diameter
Between 0.919 inches and 1.017 inches
Internal Drive Style
Cross recess type 1
Thread Diameter
0.500 inches
Thready Qty Per Inch (tpi)
20
Min. Tensile Strength (psi)
125000 pounds per square inch
Hardness Rating
Between 26.0 rockwell c and 32.0 rockwell c
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Screw Material
Steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740
Screw Material Specification
Mil-s-6758 military specification 1st material response or mil-s-6050 military specification 2nd material response or mil-s-6098 military specification 3rd material response or mil-s-6049 military specification 4th material response
Screw Surface Treatment
Cadmium
Screw Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification single treatment response
Thread Series Designator
Unf
NSN
5305-00-150-9382
Part Number
AN509-816R18
Description
Screw,machine
CAGE
81352

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

Part AN509-816R18 NSN 5305-00-150-9382

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
Concept No.:
App. Key:
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:
713
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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