Model: 991-4-00056-030

Hexagon Self-locking Nut

Properties:

Thread Class
2b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Hexagon
Nut Height
0.215 inches
Width Across Flats
Between 0.245 inches and 0.250 inches
Tempurature Rating
Between -75.0 degrees celsius and 200.0 degrees celsius
Thread Series
Unc
Thready Qty Per Inch (tpi)
32
Thread Size
0.138 inches
Countersink Angle
90.0 degrees nut and 120.0 degrees nut
Bearing Surface Type
Flat or chamfered
Material
Stainless steel or stainless steel
Material Specification
D.T.D. 715 fscm 05901 mfr ref 1st material response or s.80 fscm 05901 mfr ref 2nd material response
Surface Treatment
Cadmium
NSN
5310-00-852-2346
Part Number
991-4-00056-030
Description
Nut,self-locking,hexagon
CAGE
K2523

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

Part 991-4-00056-030 NSN 5310-00-852-2346

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05277
FIIG:
A021A0
Concept No.:
1
App. Key:
BK
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:
0.1000lbs
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:

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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