Model: MIL-C-38999/28

Hexagon Plain Nut

Properties:

Thread Direction
Right-hand
Nut Style
Hexagon
Nut Height
Between 3.17 millimeters and 3.62 millimeters
End Application
1440-01-122-8965
Drilled Hole Diameter
1.5 millimeters
Hole Type And Quantity
3 drilled
Width Across Flats
Between 49.25 millimeters and 51.23 millimeters
Thread Series
Iso m
Thread Size
44.0 millimeters
Thread Pitch In Millimeters
1.00
Hole Configuration Style
Configuration b
Countersink Angle
118.0 degrees both ends and 152.0 degrees both ends
Bearing Surface Type
Chamfered
Thread Tolerance Class
6h internal
Material
Aluminum alloy 2024 or aluminum alloy 2017
Material Specification
Qq-a-200/3, t351 federal specification 1st material response or qq-a-225/5, t4 federal specification 2nd material response
Surface Treatment
Nickel
Surface Treatment Specification
Mil-c-26074 military specification single treatment response
Test Data Document
81349-mil-c-38999/28 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
NSN
5310-01-333-4662
Part Number
MIL-C-38999/28
Description
Nut,plain,hexagon
CAGE
81349

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Part MIL-C-38999/28 NSN 5310-01-333-4662

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01857
FIIG:
A021A0
Concept No.:
1
App. Key:
AG
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:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
013540
UFC:
05680
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7616995095
  • SITC: 69979
  • End Use: Finished metal shapes
  • NAICS: 332999
  • USDA: 1

Freight Class: Articles of aluminum nesoi

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