Model: H49987-4

Extended Washer Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.440 inches
Counterbore Diameter
0.270 inches nut and 0.275 inches nut
Overall Height
0.458 inches
Nut Style
Double hexagon
Washer Thickness
Between 0.070 inches and 0.080 inches
Nut Counterbore Depth
0.130 inches nut
Width Across Flats
Between 0.305 inches and 0.313 inches
Thread Series
Unjf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Material
Nickel alloy
Material Specification
Ams 5709 assn standard single material response
Surface Treatment
Silver
Surface Treatment Specification
-50tf7 cl c, fscm 07482 mfr ref single treatment response
NSN
5310-00-523-2788
Part Number
H49987-4
Description
Nut,self-locking,extended Washer
CAGE
15653

A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part H49987-4 NSN 5310-00-523-2788

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29729
FIIG:
A021A0
Concept No.:
1
App. Key:
BS
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:
S
ESD:
ESD:
MMAC:
NY
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:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7508900000
  • SITC: 69975
  • End Use: Finished metal shapes
  • NAICS: 332999
  • USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)

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