Model: 304992

Assembled Washer Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.431 inches and 0.462 inches
Fastener Length
Between 0.531 inches and 0.562 inches
Head Style
Pan no. 2
Head Diameter
Between 0.473 inches and 0.492 inches
Head Height
Between 0.130 inches and 0.144 inches
Washer Quantity
1
Internal Drive Style
Slot
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Hardness Rating
30.0 rockwell c fastener and 40.0 rockwell c fastener
Hardness Rating
40.0 rockwell c primary washer and 50.0 rockwell c primary washer
Primary Washer Outside Diameter
Between 0.494 inches and 0.506 inches
Primary Washer Style
Flat external teeth
Primary Washer Material Thickness
0.025 inches
Material
Steel comp 1022 fastener
Material
Steel comp 1050 primary washer
Material Specification
Sae assn standard single material response fastener
Material Specification
Sae assn standard single material response primary washer
Surface Treatment
Cadmium
Thread Series Designator
Unc
NSN
5305-00-121-8120
Part Number
304992
Description
Screw,assembled Washer
CAGE
1UVT5

A screw, (as modified) to which has been assembled one or more nonremovable washer(s).

Part 304992 NSN 5305-00-121-8120

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06660
FIIG:
A003B0
Concept No.:
App. Key:
SA
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
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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