Model: 1770-251

Hexagon Slotted Plain Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Nut Style
Slotted, hexagon
Nut Height
Between 0.308 inches and 0.318 inches
Width Across Flats
Between 0.495 inches and 0.505 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
24
Hardness Rating
Between 19.0 rockwell c and 26.0 rockwell c
Thread Size
0.312 inches
Countersink Angle
88.0 degrees nut and 92.0 degrees nut
Bearing Surface Type
Chamfered or washer faced
Material
Steel comp 1035 or steel comp 1536 or steel comp 1040 or steel comp 1137 or steel comp 1141
Material Specification
Astm a108 assn standard 1st material response or astm a576 assn standard 1st material response or qq-s-633-canceled federal specification 2nd material response or astm a108 assn standard 3rd material response or qq-s-637 federal specification 4th material response or qq-s-637 federal specification 5th material response
Surface Treatment
Zinc
Surface Treatment Specification
Qq-z-325, type 2, cl 3 federal specification single treatment response
NSN
5310-00-516-5059
Part Number
1770-251
Description
Nut,plain,slotted,hexagon
CAGE
93568

A nut having a flat bearing surface and 6 flat sides with slots in its upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, castellated, hexagon.

Part 1770-251 NSN 5310-00-516-5059

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01859
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:
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:
LVL_A:
E
LVL_B:
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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