Model: 246-1

Panel Screw Assembly

Special Features:

Color black fastner and standoff; housing 0.527 in. Min to 0.547 in. Max long start 0.183 in. Nom from top of head, diamond knurl portion 0.235 in. Min to 0.265 in. Max long and 0.300 in. Min to 0.330 in. Max diameter, threaded portion of housing 0.275 in. Min to 0.305 in. Max long, 0.190 in. diameter, 32 tpi, nf series, 3a class, fastner diameter 0.168 in. Min to 0.170 in. Max

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.309 inches and 0.339 inches
Fastener Length
1.187 inches
Head Style
Fillister
Head Diameter
Between 0.285 inches and 0.315 inches
Head Height
0.183 inches
Internal Drive Style
Slot
Material Accommodated Thickness
Between 0.275 inches and 0.305 inches
Thread Diameter
0.312 inches
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
140000 pounds per square inch
Minimum Yield Strength
95000 pounds per square inch
Material
Steel comp 302 fastener or steel comp 304 fastener or steel comp 304l fastener or steel comp 305 fastener or steel comp 309 fastener or steel comp 310 fastener or steel comp 316 fastener or steel comp 316l fastener or steel comp 317 fastener or steel comp 321 fastener or steel comp 347 fastener
Material
Steel comp 302 stand-off or steel comp 304 stand-off or steel comp 304l stand-off or steel comp 305 stand-off or steel comp 309 stand-off or steel comp 310 stand-off or steel comp 316 stand-off or steel comp 316l stand-off or steel comp 317 stand-off or steel comp 321 stand-off or steel comp 347 stand-off
Material
Steel comp 302 spring
Material Specification
Qq-s-763 federal specification all material responses fastener
Material Specification
Qq-s-763 federal specification single material response stand-off
Material Specification
Qq-w-423 federal specification single material response spring
Surface Treatment
Oxide fastener
Surface Treatment
Oxide stand-off
Surface Treatment
Passivate spring
Surface Treatment Specification
Mil-c-13924, cl 3 military specification single treatment response stand-off
Surface Treatment Specification
Mil-c-13924, cl 3 military specification single treatment response fastener
Surface Treatment Specification
Qq-p-35 federal specification single treatment response spring
Thread Series Designator
Unf
NSN
5305-01-180-6615
Part Number
246-1
Description
Screw Assembly,panel
CAGE
84256

A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.

Part 246-1 NSN 5305-01-180-6615

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
33044
FIIG:
A003B0
Concept No.:
App. Key:
SU
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:
--
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:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

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