Model: 81601-303

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.296 inches and 0.331 inches
Fastener Length
Between 0.468 inches and 0.500 inches
Head Style
Flat countersunk undercut
Head Diameter
Between 0.153 inches and 0.157 inches
Head Height
Between 0.109 inches and 0.112 inches
Internal Drive Style
Hexagon
Thread Diameter
0.112 inches
Width Across Flats
Between 0.078 inches and 0.079 inches
Thready Qty Per Inch (tpi)
40
Countersink Angle
20.0 degrees
Part Name Assigned By Controlling Agency
Navy special project
Material
Iron alloy 660
Material Specification
Ams 5731 assn standard single material response or ams 5732 assn standard single material response or ams 5737 assn standard single material response
Precious Material And Location
Bearing surface and top of head silver
Precious Material
Silver
Surface Treatment
Silver bearing surface of head
Surface Treatment
Silver top of head
Surface Treatment
Passivate
Surface Treatment Specification
Ams 2410 assn standard single treatment response bearing surface of head or qq-s-365 type 1 or type 2 federal specification single treatment response bearing surface of head
Surface Treatment Specification
Ams 2410 assn standard single treatment response top of head or qq-s-365 type 1 or type 2 federal specification single treatment response top of head
Surface Treatment Specification
Qq-p-35 type 1 or type 2 or type 3 federal specification single treatment response
Thread Series Designator
Unc
NSN
5305-01-145-6956
Part Number
81601-303
Description
Screw,cap,socket Head
CAGE
56878

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part 81601-303 NSN 5305-01-145-6956

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
Concept No.:
App. Key:
SC
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:
S
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:
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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