Model: 4138-0020

Extended Washer Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.167 inches
Lubrication
Soluble lubricant
Overall Height
Between 0.080 inches and 0.100 inches
Nut Style
Hexagon
Washer Thickness
0.010 inches
End Application
W/s: support equipment, b-1 aircraft; test set, arm-155/156; test consoles, mini-sace; trainer, b-1b aircraft; engine, aircraft tf33-pw-102 (c-135e, ec-135h/k/p); missile, advance medium range air-to-air (amraam)/aim120a; fire control system, missile mk 74 (fcs); aircraft, (ac-130h, mc-130h, ec-130e, hc-130s; guided missile launching system, mk 26 (gmls); intermediate forward test equipment (ifte) system
Width Across Flats
Between 0.122 inches and 0.127 inches
Tempurature Rating
450.0 degrees fahrenheit
Thread Series
Unjc
Thready Qty Per Inch (tpi)
56
Hardness Rating
49.0 rockwell c
Thread Size
0.086 inches
Material
Steel
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416 federal specification single treatment response
NSN
5310-00-058-1823
Part Number
4138-0020
Description
Nut,self-locking,extended Washer
CAGE
13467

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part 4138-0020 NSN 5310-00-058-1823

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29730
FIIG:
A021A0
Concept No.:
1
App. Key:
BT
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:
SX
CRITL:
X

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:
Q

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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