Model: 51B234-6

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.310 inches and 0.337 inches
Fastener Length
Between 0.675 inches and 0.722 inches
Head Style
Flat countersunk
Head Diameter
Between 0.451 inches and 0.507 inches
Locking Feature
Strip threads
Internal Drive Style
Offset cruciform (torque set)
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
180000 pounds per square inch
Countersink Angle
100.0 degrees
Surface Finish
32.0 microinches grip
Material
Steel comp e4340 or steel comp 4340 or steel comp 8740 or steel comp 6150
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2 cl 3 federal specification single treatment response
Thread Series Designator
Unf
NSN
5305-01-004-6415
Part Number
51B234-6
Description
Screw,cap,socket Head
CAGE
0JRC1

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 51B234-6 NSN 5305-01-004-6415

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:
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:
0.1000lbs
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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