Model: P21818

Machine Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.438 inches
Fastener Length
0.500 inches
Head Style
Fillister
Head Diameter
0.260 inches
Head Height
0.098 inches
Internal Drive Style
Slot
Thread Diameter
0.164 inches
Hole Quantity
2
Thready Qty Per Inch (tpi)
32
Screw Material
Steel comp 302 or steel comp 303 or steel comp 303 plus x or steel comp 303se
Screw Material Specification
Mil-s-7720 military specification 1st material response or ams 5640 assn standard 2nd material response or ams 5640 assn standard 3rd material response or ams 5640 assn standard 4th material response
Screw Surface Treatment
Passivate
Thread Series Designator
Unc
NSN
5305-00-147-2631
Part Number
P21818
Description
Screw,machine
CAGE
3VPW3

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 P21818 NSN 5305-00-147-2631

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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