Model: 1/4-28UNF-TIN

Hexagon Plain Nut

Properties:

Thread Class
2b
Thread Direction
Right-hand
Nut Style
Hexagon
Nut Height
Between 0.088 inches and 0.093 inches
Width Across Flats
Between 0.309 inches and 0.315 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Bearing Surface Type
Chamfered
Material
Copper alloy 268 or copper alloy 260 or copper alloy 230 or copper alloy 377 or copper alloy 360 or copper alloy 353 or copper alloy 262 or copper alloy 270 or copper alloy 272 or copper alloy 274 or copper alloy 280 or copper alloy 330 or copper alloy 331 or copper alloy 332 or copper alloy 335 or copper alloy 340 or copper alloy 344 or copper alloy 345 or copper alloy 347 or copper alloy 350 or copper alloy 356 or copper alloy 370 or copper alloy 462 or copper alloy 464 or copper alloy 465 or copper alloy 466 or copper alloy 467 or copper alloy 482 or copper alloy 485 or copper alloy 210 or copper alloy 220 or copper alloy 510 or copper alloy 745 or copper alloy 752 or copper alloy 764 or copper alloy 770 or copper alloy 240 or copper alloy 342
Material Specification
Qq-b-626, temper 1/2 hard federal specification all material responses or qq-b-637, temper 1/2 hard federal specification all material responses
Surface Treatment
Tin
Surface Treatment Specification
Mil-t-10727, type 1 military specification single treatment response
NSN
5310-01-073-7022
Part Number
1/4-28UNF-TIN
Description
Nut,plain,hexagon
CAGE
18796

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 1/4-28UNF-TIN NSN 5310-01-073-7022

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:
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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