Model: 4F81B1

Knurled Plain Nut

Properties:

Thread Class
2b
Thread Direction
Right-hand
Counterbore Diameter
0.375 inches nut
Nut Style
Knurled
Nut Diameter
0.625 inches
Nut Thickness
0.375 inches
Knurl Width
0.156 inches
Nut Counterbore Depth
0.016 inches nut
Thread Series
Unc
Thready Qty Per Inch (tpi)
20
Thread Size
0.250 inches
Countersink Angle
45.0 degrees nut
Part Name Assigned By Controlling Agency
Navy special project
Material
Copper alloy
Material Specification
Qq-b-626 federal specification single material response
NSN
5310-00-796-4786
Part Number
4F81B1
Description
Nut,plain,knurled
CAGE
98296

A nut, round in shape, having all or part of its outer surface knurled. It may have provisions for external wrenching. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, round. (when height or thickness, and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance).

Part 4F81B1 NSN 5310-00-796-4786

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15886
FIIG:
A021A0
Concept No.:
1
App. Key:
AU
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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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:
093460
UFC:
48930
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7415290000
  • SITC: 69432
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Copper screws, nuts, bolts, rivets, and other fasteners not threaded

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