Model: A51G20540-11

Internally Relieved Body Bolt
Description:

3a thread class, right-hand , 0.340 inches thread length, 2.880 inches fastener length, round w/wrench flats chamfered head style.

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.340 inches
Fastener Length
2.880 inches
Head Style
Round w/wrench flats chamfered
Head Diameter
0.750 inches
Head Height
0.125 inches
Width Between Flats
0.625 inches
Shoulder Diameter
Between 0.3740 inches and 0.3745 inches
Shoulder Length
2.540 inches
Shank Unthreaded Hole Diameter
0.075 inches first hole and 0.080 inches first hole
Concentric Hole Depth
2.400 inches
Concentric Hole Diameter
Between 0.249 inches and 0.255 inches
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Hardness Rating
38.0 rockwell c and 45.0 rockwell c
Distance From Head Largest Bearing Surface To Shank Hole Center
2.760 inches first hole
Material
Steel comp xm-12
Surface Treatment
Chromium grip
Surface Treatment
Chromium head
Surface Treatment Specification
Qq-c-320 federal specification 1st treatment response head
Style Designator
Concentric hole unthreaded
Thread Series Designator
Unjf
NSN
5306-00-009-7617
Part Number
A51G20540-11
Description
Bolt,internally Relieved Body
CAGE
61174

An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see bolt, fluid passage.

Part A51G20540-11 NSN 5306-00-009-7617

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06676
FIIG:
A003B0
Concept No.:
App. Key:
BN
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:
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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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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