Model: MS51871-13

Tapping Screw

Properties:

Fastener Length
Between 0.720 inches and 0.750 inches
Head Style
Hexagon extended washer
Head Height
Between 0.270 inches and 0.295 inches
Width Between Flats
Between 0.551 inches and 0.562 inches
Extended Washer Diameter
Between 0.720 inches and 0.780 inches
Extended Washer Thickness
Between 0.037 inches and 0.063 inches
Internal Drive Style
W/o internal drive
Min. Tensile Strength (psi)
150000 pounds per square inch
Hardness Rating
32.0 rockwell c bearing surface of head and 38.0 rockwell c bearing surface of head
Hardness Rating
32.0 rockwell c grip and 38.0 rockwell c grip
Hardness Rating
47.0 rockwell c threads
Nonmachine Thread Style
Dog type (type b or c)
Nonmachine Thread Diameter
0.375 inches
Material
Steel comp 4037
Material Specification
66 military specification single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416 type 2 cl 2 federal specification single treatment response or mil-c-81562 type 2 cl 2 military specification single treatment response
Nondefinitive Specification/std Data
B type
NSN
5305-01-289-5000
Part Number
MS51871-13
Description
Screw,tapping
CAGE
96906

A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes screw, assembled washer.

Part MS51871-13 NSN 5305-01-289-5000

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
41756
FIIG:
A003B0
Concept No.:
App. Key:
SN
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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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: 7318140000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Self-tapping screws of iron or steel

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