Model: BL90711

Internal Wrenching Bolt

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.453 inches and 0.485 inches
Fastener Length
Between 3.734 inches and 3.766 inches
Head Style
Flat chamfer
Head Diameter
Between 0.359 inches and 0.391 inches
Head Height
Between 0.234 inches and 0.266 inches
First Diameter From Head
Between 0.167 inches and 0.177 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 3.249 inches and 3.313 inches
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Width Across Flats
Between 0.184 inches and 0.194 inches
Thready Qty Per Inch (tpi)
20
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 1020
Material Specification
Qq-s-634 federal specification single material response
Surface Treatment
Chromate
Thread Series Designator
Unc
NSN
5306-00-637-8612
Part Number
BL90711
Description
Bolt,internal Wrenching
CAGE
70408

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.

Part BL90711 NSN 5306-00-637-8612

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06666
FIIG:
A003B0
Concept No.:
App. Key:
BM
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

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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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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