Model: 52A21-12-070

Plate Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Mounting Hole Diameter
Between 0.130 inches and 0.135 inches
Nut Style
Plate
Nut Length
1.406 inches
Nut Height
0.453 inches
Plate Thickness
Between 0.037 inches and 0.047 inches
Plate Width
0.906 inches
Nut Mounting Provision
Straight holes
Mounting Hole Arrangement Style
2 holes
Distance From Aperture Center To Mounting Hole Center
0.562 inches
Center To Center Distance Between Mounting Holes Along Length
Between 1.123 inches and 1.127 inches
Thread Series
Unf
Features Provided
Floating nut
Thready Qty Per Inch (tpi)
20
Thread Size
0.438 inches
Material
Plastic polyamide locking insert
Material
Steel comp 1137 nut
Material
Steel comp 4130 shell
Material Specification
Mil-s-866 military specification single material response nut
Surface Treatment
Cadmium nut or zinc nut and chromate nut
Surface Treatment
Cadmium shell or zinc shell and chromate shell
Surface Treatment Specification
Qq-p-416, type 1, class 3 federal specification 1st treatment response nut or qq-z-325, type 2, class 3 federal specification 2nd treatment response nut
Surface Treatment Specification
Qq-p-416, type 1, class 3 federal specification 1st treatment response shell or qq-z-325, type 2, class 3 federal specification 2nd treatment response shell
NSN
5310-00-576-5759
Part Number
52A21-12-070
Description
Nut,self-locking,plate
CAGE
72962

A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.

Part 52A21-12-070 NSN 5310-00-576-5759

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05280
FIIG:
A021A0
Concept No.:
1
App. Key:
BZ
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:
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:

Freight Classification

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