Model: 21-41515-1

Round Plain Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Drive Point Depth
0.3125 inches
Nut Style
Round
Nut Diameter
7.875 inches
Nut Thickness
0.625 inches
Drive Point Quantity
2
Drive Point Diameter
0.3125 inches
Thread Series
Un
Thready Qty Per Inch (tpi)
12
Hardness Rating
Between 26.0 rockwell c and 32.0 rockwell c
Thread Size
6.500 inches
Countersink Angle
90.0 degrees nut
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 4130
Material Specification
Mil-s-6758, cond d1 military specification single material response
NSN
5310-00-637-1074
Part Number
21-41515-1
Description
Nut,plain,round
CAGE
80020

A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Part 21-41515-1 NSN 5310-00-637-1074

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15887
FIIG:
A021A0
Concept No.:
1
App. Key:
AY
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318160000
  • SITC: 69421
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Nuts of iron or steel

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