Model: AN509DD416R40

Machine Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.516 inches and 0.546 inches
Fastener Length
Between 2.500 inches and 2.562 inches
Head Style
Flat countersunk
Head Diameter
Between 0.447 inches and 0.507 inches
Internal Drive Style
Cross recess type 1
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Screw Material
Aluminum alloy 2024
Screw Material Specification
Qq-a-430 federal specification 1st material response or qq-a-225, t4 federal specification 2nd material response
Head Surface Treatment
Anodize
Screw Surface Treatment
Anodize
Head Surface Treatment Specification
Mil-a-8625, type i or ii military specification single treatment response
Screw Surface Treatment Specification
Mil-a-8625, type i or ii military specification single treatment response
Thread Series Designator
Unf
NSN
5305-01-499-3539
Part Number
AN509DD416R40
Description
Screw,machine
CAGE

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 AN509DD416R40 NSN 5305-01-499-3539

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:
A
ESD:
A
ESD:
A
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 7616106000
  • SITC: 69440
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Threaded fasteners of aluminum

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