Model: A173-1C

Machine Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.450 inches
Fastener Length
Between 0.550 inches and 0.590 inches
Head Style
Flat countersunk
Head Diameter
Between 0.287 inches and 0.334 inches
Internal Drive Style
Torque
Thread Diameter
0.164 inches
Thready Qty Per Inch (tpi)
32
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Screw Material
Steel
Screw Material Specification
Bs s94 assn standard single material response or bs s95 assn standard single material response or bs s114 assn standard single material response or bs s116 assn standard single material response or bs s117 assn standard single material response
Screw Surface Treatment
Cadmium
Screw Surface Treatment Specification
Qq-p-416, type 2 cl 3 federal specification all treatment responses
Thread Series Designator
Unc
NSN
5305-00-878-7051
Part Number
A173-1C
Description
Screw,machine
CAGE
U1604

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

Part A173-1C NSN 5305-00-878-7051

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
Concept No.:
App. Key:
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:
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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