Model: MS21044B4

Hexagon Self-locking Nut

Special Features:

Magnetic particle inspection

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Lubrication
Soluble lubricant
Nut Style
Hexagon
Nut Height
Between 0.240 inches and 0.360 inches
Width Across Flats
Between 0.430 inches and 0.439 inches
Tempurature Rating
250.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Countersink Angle
88.0 degrees nut
Criticality Code Justification
Feat
Bearing Surface Type
Chamfered or washer faced
Bearing Surface Finish
125.0 microinches
Material
Copper alloy 360 nut or copper alloy 260 nut
Surface Treatment
Cadmium except insert
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response except insert
NSN
5310-00-138-4261
Part Number
MS21044B4
Description
Nut,self-locking,hexagon
CAGE
80205

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

Part MS21044B4 NSN 5310-00-138-4261

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05277
FIIG:
A021A0
Concept No.:
1
App. Key:
BK
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:
SX
CRITL:
Y

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093460
UFC:
48930
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7415290000
  • SITC: 69432
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Copper screws, nuts, bolts, rivets, and other fasteners not threaded

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