Model: 990C637H28

Clinch Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Pilot Diameter
0.165 inches
Pilot Length
Between 0.146 inches and 0.166 inches
Nut Style
Clinch
Nut Diameter
0.281 inches
Nut Height
Between 0.264 inches and 0.288 inches
Thread Series
Unc
Thready Qty Per Inch (tpi)
32
Thread Size
0.138 inches
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
NSN
5310-01-006-3745
Part Number
990C637H28
Description
Nut,self-locking,clinch
CAGE
18323

A nut having a sleeve portion on its under side, which can be crimped or clinched to hold the item in place when inserted in a hole. An integral feature is incorporated for locking.

Part 990C637H28 NSN 5310-01-006-3745

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15892
FIIG:
A021A0
Concept No.:
1
App. Key:
BN
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:
CRITL:
X

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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