Model: MS21318-28

Drive Screw

Properties:

Fastener Length
Between 0.266 inches and 0.334 inches
Head Style
Round
Head Diameter
Between 0.240 inches and 0.260 inches
Head Height
Between 0.091 inches and 0.103 inches
Pilot Diameter
Between 0.112 inches and 0.116 inches
Pilot Length
0.047 inches
Features Provided
Casehardened
Nonmachine Thread Style
Drive screw (type u)
Nonmachine Thread Diameter
0.138 inches
Material
Steel
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416 type 2 cl 3 federal specification all treatment responses
Nondefinitive Specification/std Data
U type
NSN
5305-00-253-5618
Part Number
MS21318-28
Description
Screw,drive
CAGE
96906

A hardened cylindrical fastener with multiple spiral flutes on its shank. It also has an end smaller in diameter than the outside diameter of the spiral flutes, which acts as a pilot when driven into a drilled hole.

Part MS21318-28 NSN 5305-00-253-5618

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15896
FIIG:
A003B0
Concept No.:
App. Key:
SD
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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.2000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
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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