Model: 66556-.040-12

Self-locking Stud

Properties:

Thread Class
2a stud thread
Thread Direction
Right-hand stud thread
Thread Length
0.172 inches stud thread and 0.202 inches stud thread
Head Diameter
Between 0.197 inches and 0.201 inches
Head Length
Between 0.036 inches and 0.040 inches
Locking Feature
Head distortions
Overall Length
Between 0.208 inches and 0.242 inches
End Application
Spec item
Distance Across Flats
0.250 inches
Thready Qty Per Inch (tpi)
32 stud thread
Thread Size
0.138 inches stud thread
Material
Steel comp 303
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Style Designator
Self-locking
Thread Series Designator
Unc stud thread
NSN
5307-00-882-8432
Part Number
66556-.040-12
Description
Stud,self-locking
CAGE
51506

Part 66556-.040-12 NSN 5307-00-882-8432

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
27783
FIIG:
A051A0
Concept No.:
App. Key:
D
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:
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:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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